[Elecraft] Earpads Shedding

Wed May 6 18:24:24 EDT 2020

Ask Dr Google find you earpad covers. Or send a SASE envelope with$1 of stamps on it & I'll send you a couple pairs.

...earpads are flaking pretty badly, leaving little back bits around the home office/shack

⁣___
Sent from my two way wrist watch
73 de W3AB/GEO

On May 6, 2020, 14:37, at 14:37, elecraft-request at mailman.qth.net wrote:
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>
>Today's Topics:
>
>   1. Re: CM500 headset on K3S and KX3? (Grant Youngman)
>   2. CM500 Adapter (Troy Davis)
>   3. K3 current draw (David Thompson)
>   4. Re: CM500 headset on K3S and KX3? (Jim Brown)
>   5. Re: Earpads Shedding (Tommy Judson)
>   6. Re: Upper limits of KPA500? (Tom Azlin W7SUA)
>   7. Re: Upper limits of KPA500? (Bob McGraw K4TAX)
>   8. Re: CM500 Adapter (Josh Fiden)
>   9. Re: Earpads Shedding (Tom Morehouse)
>  10. Re: Upper limits of KPA500? (Macy monkeys)
>  11. Re: CM500 headset on K3S and KX3? (Walter Underwood)
>  12. Re: CM500 headset on K3S and KX3? (Jim Brown)
>  13. Re: CM500 headset on K3S and KX3? (john at kk9a.com)
>  14. Re: CM500 Adapter (Walter Underwood)
>  15. Re: CM500 Adapter (Jim Rhodes)
>  16. Re: CM500 headset on K3S and KX3? (Jim Rhodes)
>  17. Re: Earpads Shedding (W0FK)
>  18. Re: Earpads Shedding (Jim Bruce)
>  19. K3/0 (Mike Zak)
>  20. Elecraft K2 7855, alignment and test part II,	bad PLL
>      frequency. (Christophe GIBERT)
>  21. Re: CM500 headset on K3S and KX3? (Josh Fiden)
>  22. Re: Earpads Shedding (tony.kaz at verizon.net)
>  23. Re: CM500 headset on K3S and KX3? (Charlie T)
>  24. Re: Elecraft K2 7855, alignment and test part II, bad PLL
>      frequency. (Don Wilhelm)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Wed, 6 May 2020 13:16:17 -0400
>From: Grant Youngman <ghyoungman at gmail.com>
>To: Elecraft Refl <elecraft at mailman.qth.net>
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>Message-ID: <ED63C9DF-C71D-4C53-8D65-1504FC05F288 at gmail.com>
>Content-Type: text/plain;	charset=utf-8
>
>I bought a pair of CM500?s when they became all the rage a few years
>ago.  Never liked them.  The mic sounds ok, but they?re just too
>loosely-goosey a fit and I find them fiddly and not very stable on the
>head.  I used them for a while and tossed them into the pile of too
>much stuff I bought and don?t use.
>
>Replaced them eventually with an RS60CF, and never looked back.  Cable
>sets for both the KX3 and K3(K4). And yes ? I know there are a lot of
>people who don?t like those, either.  But I do.  All a matter of
>personal choice, I guess  :-)  David Clark makes a small and
>inexpensive soft-case that fits them perfectly, too.
>
>Grant NQ5T
>
>> On May 6, 2020, at 12:53 PM, Walter Underwood <wunder at wunderwood.org>
>wrote:
>> 
>> My CM500?s earpads are flaking pretty badly, leaving little back bits
>around the home office/shack. 
>
>
>------------------------------
>
>Message: 2
>Date: Wed, 6 May 2020 17:24:58 +0000
>From: Troy Davis <troy.davis at hotmail.com>
>To: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
>Subject: [Elecraft] CM500 Adapter
>Message-ID:
>	<BN8PR06MB539381C60F1CAE57FA9C5B2098A40 at BN8PR06MB5393.namprd06.prod.outlook.com>
>	
>Content-Type: text/plain; charset="Windows-1252"
>
>https://www.ebay.com/itm/351072109250
>
>?
>Troy Davis
>K4JDA
>
>
>
>------------------------------
>
>Message: 3
>Date: Wed, 6 May 2020 10:33:08 -0700
>From: David Thompson <dbthompson at me.com>
>To: Elecraft Reflector <elecraft at mailman.qth.net>
>Subject: [Elecraft] K3 current draw
>Message-ID: <98EA5364-55F4-49CA-AA0A-16F00E034F1B at me.com>
>Content-Type: text/plain;	charset=utf-8
>
>Morning group,
>
>After spending some time searching, I cannot find a table of measured
>current draw versus power output for the K3. I?m working on how much
>battery I need for portable ops and this information would be good so I
>can estimate the energy requirements for my system.
>
>There is an old pointer to the K9XC website, which has apparently gone
>away. So, any help would be appreciated. If the work has already been
>done, I?m not interested in doing my own experiments.
>
>Best...
>
>David Thompson, AG7TX
>Jack of All Trades
>Master of None
>dbthompson at me.com
>
>
>
>
>
>
>------------------------------
>
>Message: 4
>Date: Wed, 6 May 2020 10:54:02 -0700
>From: Jim Brown <jim at audiosystemsgroup.com>
>To: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>Message-ID:
>	<482da1df-14db-90ca-64a4-afe995ba9c79 at audiosystemsgroup.com>
>Content-Type: text/plain; charset=utf-8; format=flowed
>
>On 5/6/2020 9:53 AM, Walter Underwood wrote:
>> Comments on my blog post suggested the Koss SB45 as another
>alternative. This also has an electret mic, but somewhat different fit
>over the ears, and it is cheaper.
>> 
>>
>https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW
>
>K6LL, a serious contester, likes this headset. I noted this in a piece
>I 
>wrote several years ago for National Contest Journal. GM3SEK reported 
>that Yamaha products are not sold in the UK, and that his wife likes
>the 
>lighter weight Koss CS100 headset.
>http://k9yc.com/ContestAudio.pdf
>> 
>> Do not get the Koss SB40. That is the same headset as the Yamaha
>CM500, but with an inferior dynamic mic.
>
>There is nothing inherently inferior about dynamic mics, especially for
>
>speech -- the vast majority of mics used in sound reinforcement and 
>broadcasting are dynamic mics. But like any technology, some products 
>are better than others.
>> It is normal for earpads to wear out. I replaced the pads on my Grado
>SR225e phones after five years.
>
>Yes. I replace earpads on my Sony MDR7506 periodically.
>
>For many things we wear, comfort can be important, and, with headsets, 
>that depends on the size and shape of our heads and even our ears, as 
>well as the design and manufacturing quality of the headset. For many 
>years, I've slept wearing Sony MDR7506 phones listening to jazz, and I 
>also use them working CW-only contests. I find the CM500 equally 
>comfortable.
>
>73, Jim K9YC
>
>
>------------------------------
>
>Message: 5
>Date: Wed, 6 May 2020 12:58:14 -0500
>From: Tommy Judson <tson35 at icloud.com>
>To: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] Earpads Shedding
>Message-ID: <943B9CAD-4758-4947-B207-CF855450D967 at icloud.com>
>Content-Type: text/plain;	charset=utf-8
>
>...earpads are flaking pretty badly, leaving little back bits around
>the home office/shack?
>
>Took me a while to realize it was my earpads shedding, glad to read
>this isn?t an isolated occurrence.  Now how to remedy that problem?
>
>
>
>------------------------------
>
>Message: 6
>Date: Wed, 6 May 2020 11:03:18 -0700
>From: Tom Azlin W7SUA <tom at w7sua.org>
>To: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] Upper limits of KPA500?
>Message-ID: <49f37d11-1f99-5717-1204-85c393d414fc at w7sua.org>
>Content-Type: text/plain; charset=utf-8; format=flowed
>
>Hi Dave,
>
>I run around 100-150 watts out of my KPA500 using 5-7 watts from my K3 
>with the KPA500 hitting 70C using Olivia during nets. I assume could go
>
>to 250 but never needed that much power. Does not seem to be a problem 
>with temps above 70c. Also run up to 500w PEP using SSB when needed.
>
>I did hear Wayne say run full power RTTY with no fear.
>
>73, tom w7sua
>
>
>
>
>
>On 5/3/2020 1:26 PM, Dave Cole wrote:
>> Hello,
>> 
>> I just got the new MMSSTV software, and will be running a bit of
>SSTV. 
>> SSTV is 100% duty cycle.
>> 
>> Initial testing here indicates no power level is safe...? At 150
>watts 
>> the KPA500 reaches 70C pretty fast, in under two minutes, and 70C is
>my 
>> upper limit for testing...? At 500 watts it reaches 70C in about the 
>> same time...
>> 
>> Can I assume the amp is not the most efficient thing in the world at
>200 
>> watts?
>> 
>> If the KPA500 can't deal with 100% duty cycle, for two minutes, how
>does 
>> the K3 deal with 100 watts for two minutes, at 100% duty cycle?
>> 
>
>
>------------------------------
>
>Message: 7
>Date: Wed, 6 May 2020 13:11:05 -0500
>From: Bob McGraw K4TAX <rmcgraw at blomand.net>
>To: elecraft at mailman.qth.net, tom at w7sua.org
>Subject: Re: [Elecraft] Upper limits of KPA500?
>Message-ID: <e9fcc199-57cb-72e7-209c-1bd039fba945 at blomand.net>
>Content-Type: text/plain; charset="utf-8"; Format="flowed"
>
>As long as one stays within the duty cycle times limits, no problem.
>
>Do note that some antenna system which are lower impedance will require
>
>the amp to draw more current for a given amount of power. And it does 
>vary from band to band.??? The attached EXCEL spreadsheet should be of 
>interest regarding lower power operation.
>
>73
>
>Bob, K4TAX
>
>
>On 5/6/2020 1:03 PM, Tom Azlin W7SUA wrote:
>> Hi Dave,
>>
>> I run around 100-150 watts out of my KPA500 using 5-7 watts from my
>K3 
>> with the KPA500 hitting 70C using Olivia during nets. I assume could 
>> go to 250 but never needed that much power. Does not seem to be a 
>> problem with temps above 70c. Also run up to 500w PEP using SSB when 
>> needed.
>>
>> I did hear Wayne say run full power RTTY with no fear.
>>
>> 73, tom w7sua
>>
>>
>>
>>
>>
>> On 5/3/2020 1:26 PM, Dave Cole wrote:
>>> Hello,
>>>
>>> I just got the new MMSSTV software, and will be running a bit of 
>>> SSTV. SSTV is 100% duty cycle.
>>>
>>> Initial testing here indicates no power level is safe...? At 150 
>>> watts the KPA500 reaches 70C pretty fast, in under two minutes, and 
>>> 70C is my upper limit for testing...? At 500 watts it reaches 70C in
>
>>> about the same time...
>>>
>>> Can I assume the amp is not the most efficient thing in the world at
>
>>> 200 watts?
>>>
>>> If the KPA500 can't deal with 100% duty cycle, for two minutes, how 
>>> does the K3 deal with 100 watts for two minutes, at 100% duty cycle?
>>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to rmcgraw at blomand.net 
>
>------------------------------
>
>Message: 8
>Date: Wed, 6 May 2020 11:27:06 -0700
>From: Josh Fiden <josh at voodoolab.com>
>To: Elecraft Reflector <Elecraft at mailman.qth.net>
>Subject: Re: [Elecraft] CM500 Adapter
>Message-ID: <3AE5BFE9-E334-468E-9110-BC976A6C59AB at voodoolab.com>
>Content-Type: text/plain; charset=utf-8
>
>$35 ? Ouch. $5 in parts and break out the soldering iron! Mouser has
>these connectors for $1.50-ish each. 
>
>73
>Josh W6XU 
>
>Sent from my mobile device
>
>> On May 6, 2020, at 10:25 AM, Troy Davis <troy.davis at hotmail.com>
>wrote:
>> 
>> ?https://www.ebay.com/itm/351072109250
>> 
>> ?
>> 
>
>
>
>------------------------------
>
>Message: 9
>Date: Wed, 6 May 2020 14:31:52 -0400
>From: Tom Morehouse <k4aen at me.com>
>To: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] Earpads Shedding
>Message-ID: <1D4D619C-2BD9-4227-A3F6-A2FDB0CE6BFD at me.com>
>Content-Type: text/plain;	charset=utf-8
>
>Here?s my solution:
>Garfield Headphone Softie Earpad Covers (Black, Pair) $17.00  
>
>
>from B&H:
>https://www.bhphotovideo.com/c/product/368310-REG/Garfield_SGARHS1_Headphone_Softie_Earpad.html
><https://www.bhphotovideo.com/c/product/368310-REG/Garfield_SGARHS1_Headphone_Softie_Earpad.html>
>
>Works well?
>73
>
>Tom K4AEN
>
>------------------------------
>
>Message: 10
>Date: Wed, 6 May 2020 11:38:26 -0700
>From: Macy monkeys <macymonkeys at charter.net>
>To: Tom Azlin W7SUA <tom at w7sua.org>
>Cc: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] Upper limits of KPA500?
>Message-ID: <2DAE6E1D-4D8E-44DE-B32C-4B4F21CBAFDC at charter.net>
>Content-Type: text/plain;	charset=us-ascii
>
>I ragchew on CW and have my KPA500 fan set on level 2 as a default. I
>don't really keep an eye on the temp. When I hear fan level 3 kick in,
>that's my cue I've been too longed winded and time to turn it over :)
>
>John K7FD
>
>
>> On May 6, 2020, at 11:03 AM, Tom Azlin W7SUA <tom at w7sua.org> wrote:
>> 
>> Hi Dave,
>> 
>> I run around 100-150 watts out of my KPA500 using 5-7 watts from my
>K3 with the KPA500 hitting 70C using Olivia during nets. I assume could
>go to 250 but never needed that much power. Does not seem to be a
>problem with temps above 70c. Also run up to 500w PEP using SSB when
>needed.
>> 
>> I did hear Wayne say run full power RTTY with no fear.
>> 
>> 73, tom w7sua
>> 
>> 
>> 
>> 
>> 
>>> On 5/3/2020 1:26 PM, Dave Cole wrote:
>>> Hello,
>>> I just got the new MMSSTV software, and will be running a bit of
>SSTV. SSTV is 100% duty cycle.
>>> Initial testing here indicates no power level is safe...  At 150
>watts the KPA500 reaches 70C pretty fast, in under two minutes, and 70C
>is my upper limit for testing...  At 500 watts it reaches 70C in about
>the same time...
>>> Can I assume the amp is not the most efficient thing in the world at
>200 watts?
>>> If the KPA500 can't deal with 100% duty cycle, for two minutes, how
>does the K3 deal with 100 watts for two minutes, at 100% duty cycle?
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to macymonkeys at charter.net
>
>
>
>------------------------------
>
>Message: 11
>Date: Wed, 6 May 2020 11:39:14 -0700
>From: Walter Underwood <wunder at wunderwood.org>
>To: Elecraft Mailing List <elecraft at mailman.qth.net>
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>Message-ID: <C279F1EF-587C-4EF0-9CE3-52B24ED66773 at wunderwood.org>
>Content-Type: text/plain;	charset=utf-8
>
>
>> On May 6, 2020, at 10:54 AM, Jim Brown <jim at audiosystemsgroup.com>
>wrote:
>> 
>>> Do not get the Koss SB40. That is the same headset as the Yamaha
>CM500, but with an inferior dynamic mic.
>> 
>> There is nothing inherently inferior about dynamic mics, especially
>for speech -- the vast majority of mics used in sound reinforcement and
>broadcasting are dynamic mics. But like any technology, some products
>are better than others.
>
>Of course. This particular headset has an inferior dynamic mic,
>according to reviews. At this price point, I?d expect electrets to be
>the best performers.
>
>If I was going to upgrade my headset, I?d start with headsets used by
>sports broadcasters and ENG teams. Is it still called ?electronic news
>gathering??
>
>wunder
>K6WRU
>Walter Underwood
>CM87wj
>http://observer.wunderwood.org/ (my blog)
>
>------------------------------
>
>Message: 12
>Date: Wed, 6 May 2020 11:39:42 -0700
>From: Jim Brown <jim at audiosystemsgroup.com>
>To: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>Message-ID:
>	<c65aed69-f035-8442-f3dd-4a546e72346e at audiosystemsgroup.com>
>Content-Type: text/plain; charset=utf-8; format=flowed
>
>Probably like Baufong radios, rip-offs of someone else's product. No, 
>I've never heard of it. A story.
>
>A colleague in pro audio, excellent engineer, designer of sound systems
>
>in the US Senate, House, and White House, wanted to do a good deed for 
>rock and roll churches who used a lot of mics. He imported mics from a 
>company in China. Samples were great, so he placed an order. Production
>
>quality was VERY different. Like Baufong, we're talking $40-$60 for
>mics 
>competing with EU mics that sell for $1,000 - $1,500.
>
>Quality companies like Shure and Switchcraft have long huge problems 
>with counterfeits of their products, and counterfeit mechanical and 
>structural parts have long been a problem for manufacturers. I remember
>
>reading about that in the aircraft industry more than a decade ago.
>
>73, Jim K9YC
>
>On 5/6/2020 5:32 AM, Lyn Norstad wrote:
>> There is a (presumably Chinese) mic known as the BM800 which is
>marketed
>> under several different names.  I am currently using one on a boom
>with
>> shock mount, wind screen and foot switch just because I like
>hands-free
>> operation ... and am too frugal (i.e.: cheap) to spend the $$ for a
>Heil
>> equivalent.
>> 
>> Are you familiar with this mic, and what are your thoughts?  I get
>excellent
>> reports with it on my (non-Elecraft) rig.
>
>
>
>------------------------------
>
>Message: 13
>Date: Wed, 06 May 2020 13:50:52 -0500
>From: john at kk9a.com
>To: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>Message-ID:
>	<20200506135052.Horde.viQoU77FeVYaPizb417IhGE at www11.qth.com>
>Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes
>
>Interesting that Heil is not represented commercially. I believe that  
>Bob Heil invented the talk box that Peter Frampton made famous. I use  
>a Sony MDR-7506 for RTTY and CW but I do use a Heil ProSet IC for SSB.
>
>John KK9A
>
>Jim Brown K9YC wrote:
>
>Heil products are an example of better sound through marketing. They're
>more expensive because they spend a lot of money on advertising to
>convince hams they're worth it. They also claim to make pro mics. I've
>been a member of the AES Standards Committee WG on microphones for more
>than 25 years, in which virtually all major microphone companies are
>represented. No one from the company is listed as a member, and I've
>never met Bob Heil or anyone from his company. Hams seem to think that
>because he did sound for a major rock band that his mics were good.
>
>73, Jim K9YC
>
>
>
>------------------------------
>
>Message: 14
>Date: Wed, 6 May 2020 12:05:02 -0700
>From: Walter Underwood <wunder at wunderwood.org>
>To: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
>Subject: Re: [Elecraft] CM500 Adapter
>Message-ID: <FF994DA0-64EB-448E-B1F8-DB31D777B7A3 at wunderwood.org>
>Content-Type: text/plain;	charset=utf-8
>
>$35 is too much for this mic adapter. It probably reflects the small
>lot manufacturing cost, but you don?t need to pay that.
>
>This adapter costs $5.45 and does the same thing.
>
>https://smile.amazon.com/gp/product/B000068O5H/
>
>The KX3 mic connection is TRRS, but Ring 2 and Sleeve are both
>connected to ground. They are labeled mic ground and logic ground, but
>they are tied together inside the radio, so a TRS plug works just fine.
>The wiring detail is from the Fred Cady book.
>
>wunder
>K6WRU
>Walter Underwood
>CM87wj
>http://observer.wunderwood.org/ (my blog)
>
>> On May 6, 2020, at 10:24 AM, Troy Davis <troy.davis at hotmail.com>
>wrote:
>> 
>> https://www.ebay.com/itm/351072109250
>> 
>> ?
>> Troy Davis
>> K4JDA
>> 
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to wunder at wunderwood.org 
>
>
>
>------------------------------
>
>Message: 15
>Date: Wed, 6 May 2020 14:32:04 -0500
>From: Jim Rhodes <jimk0xu at gmail.com>
>To: Walter Underwood <wunder at wunderwood.org>
>Cc: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] CM500 Adapter
>Message-ID:
>	<CALhxr4YCvetDz1AHkuNADdvJR=6_YViFHFx5tHitf3k9cB=Ovg at mail.gmail.com>
>Content-Type: text/plain; charset="UTF-8"
>
>The Amazon one is what I have had for several years. Works a charm and
>just
>little cheaper!
>
>
>On Wed, May 6, 2020, 14:06 Walter Underwood <wunder at wunderwood.org>
>wrote:
>
>> $35 is too much for this mic adapter. It probably reflects the small
>lot
>> manufacturing cost, but you don?t need to pay that.
>>
>> This adapter costs $5.45 and does the same thing.
>>
>> https://smile.amazon.com/gp/product/B000068O5H/
>>
>> The KX3 mic connection is TRRS, but Ring 2 and Sleeve are both
>connected
>> to ground. They are labeled mic ground and logic ground, but they are
>tied
>> together inside the radio, so a TRS plug works just fine. The wiring
>detail
>> is from the Fred Cady book.
>>
>> wunder
>> K6WRU
>> Walter Underwood
>> CM87wj
>> http://observer.wunderwood.org/ (my blog)
>>
>> > On May 6, 2020, at 10:24 AM, Troy Davis <troy.davis at hotmail.com>
>wrote:
>> >
>> > https://www.ebay.com/itm/351072109250
>> >
>> > ?
>> > Troy Davis
>> > K4JDA
>> >
>> > ______________________________________________________________
>> > Elecraft mailing list
>> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> > Help: http://mailman.qth.net/mmfaq.htm
>> > Post: mailto:Elecraft at mailman.qth.net
>> >
>> > This list hosted by: http://www.qsl.net
>> > Please help support this email list: http://www.qsl.net/donate.html
>> > Message delivered to wunder at wunderwood.org
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to jimk0xu at gmail.com
>
>
>------------------------------
>
>Message: 16
>Date: Wed, 6 May 2020 14:35:54 -0500
>From: Jim Rhodes <jimk0xu at gmail.com>
>To: john at kk9a.com
>Cc: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>Message-ID:
>	<CALhxr4a6ho9uFC+6BmprpwP-bBofvoGz0=-PAoWerUgKadHLyQ at mail.gmail.com>
>Content-Type: text/plain; charset="UTF-8"
>
>Over the years I have worn out 2 of the SB-40s and always had good
>audio
>reports. You can sound terrible on any mike if they aren't used
>correctly.
>
>On Wed, May 6, 2020, 13:51 <john at kk9a.com> wrote:
>
>> Interesting that Heil is not represented commercially. I believe that
>> Bob Heil invented the talk box that Peter Frampton made famous. I use
>> a Sony MDR-7506 for RTTY and CW but I do use a Heil ProSet IC for
>SSB.
>>
>> John KK9A
>>
>> Jim Brown K9YC wrote:
>>
>> Heil products are an example of better sound through marketing.
>They're
>> more expensive because they spend a lot of money on advertising to
>> convince hams they're worth it. They also claim to make pro mics.
>I've
>> been a member of the AES Standards Committee WG on microphones for
>more
>> than 25 years, in which virtually all major microphone companies are
>> represented. No one from the company is listed as a member, and I've
>> never met Bob Heil or anyone from his company. Hams seem to think
>that
>> because he did sound for a major rock band that his mics were good.
>>
>> 73, Jim K9YC
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to jimk0xu at gmail.com
>>
>
>
>------------------------------
>
>Message: 17
>Date: Wed, 6 May 2020 13:16:09 -0700 (MST)
>From: W0FK <lladerman at earthlink.net>
>To: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] Earpads Shedding
>Message-ID: <1588796169250-0.post at n2.nabble.com>
>Content-Type: text/plain; charset=us-ascii
>
>What headphones do you have? If Heil or RadioSport, they have
>replacement
>pads you can purchase. In my experience, once the vinyl starts to
>flake, you
>are doomed to having them continue to make a mess even if you cover
>them
>with a slipcover. 
>
>Lou, W0FK
>
>
>
>-----
>St. Louis, MO
>
>"The difference between stupidity and genius is that 
>genius has its limits." Albert Einstein
>
>
>--
>Sent from: http://elecraft.365791.n2.nabble.com/
>
>
>------------------------------
>
>Message: 18
>Date: Wed, 6 May 2020 16:30:33 -0400
>From: Jim Bruce <jimw3fa at gmail.com>
>To: elecraft at mailman.qth.net, tson35 at icloud.com
>Subject: Re: [Elecraft] Earpads Shedding
>Message-ID: <38c9318a-955a-bfea-4278-0daa1620fc92 at gmail.com>
>Content-Type: text/plain; charset=utf-8; format=flowed
>
>I went online and got packs of the cloth headphone earmuff covers for 
>mine. Work good, washable, stretchable, several in a pack, inexpensive.
>
>I got a small pack and large pack. large covers the yamaha 500 
>headphones well.? Smaller ones cover the cheaper music headphones.
>
>Jim/W3FA
>
>On 5/6/2020 13:58, Tommy Judson via Elecraft wrote:
>> ...earpads are flaking pretty badly, leaving little back bits around
>the home office/shack?
>>
>> Took me a while to realize it was my earpads shedding, glad to read
>this isn?t an isolated occurrence.  Now how to remedy that problem?
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to jimw3fa at gmail.com
>
>
>------------------------------
>
>Message: 19
>Date: Wed, 6 May 2020 20:39:46 +0000
>From: Mike Zak <mike at brookblue.com>
>To: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
>Subject: [Elecraft] K3/0
>Message-ID: <4943072F-4A3E-44E6-8D23-03829FCE9375 at contoso.com>
>Content-Type: text/plain; charset="utf-8"
>
>Would like to purchase one of the old K3/0 control heads.  I?m looking
>for one of the early versions, not the later K3/0-mini.  Tnx.
>
>Mike, W1MU
>
>
>
>
>Michael J. Zak
>mike at brookblue.com<mailto:mike at brookblue.com>
>
>
>
>------------------------------
>
>Message: 20
>Date: Wed, 6 May 2020 20:44:39 +0000
>From: Christophe GIBERT <gibertc at hotmail.com>
>To: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
>Cc: "support at elecraft.com" <support at elecraft.com>
>Subject: [Elecraft] Elecraft K2 7855, alignment and test part II,	bad
>	PLL frequency.
>Message-ID:
>	<PR3P191MB10669446FDC1DAFE9E6B9B0AA3A40 at PR3P191MB1066.EURP191.PROD.OUTLOOK.COM>
>	
>Content-Type: text/plain; charset="utf-8"
>
>Hi! First of all, sorry for my poor english, i?m french ;-)
>
>I?m building my k2 number 7855. 
>
>In the first step of the 4mhz oscillator calibration, i get a frequency
>of 00500.00 instead of 12090.00 
>
>When i press BAND + : 00475.00 and BAND - : 12085.43 (stable).
>
>I?ve tested probe on TP2, I?d 4913.52
>
>I reviewed all components in the pll schematics and nothing seems
>wrong. 
>
>Please help me, i don?t know what to look for now.
>
>Thanks a lot.
>
>? 
>Chris
>
>------------------------------
>
>Message: 21
>Date: Wed, 6 May 2020 14:00:32 -0700
>From: Josh Fiden <josh at voodoolab.com>
>To: Elecraft Reflector <Elecraft at mailman.qth.net>
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>Message-ID: <0C32C0D7-0695-4847-8EB0-63A604B2A8E3 at voodoolab.com>
>Content-Type: text/plain; charset=utf-8
>
>The talk box predates the Heil version that Frampton used. 
>
>Sent from my mobile device
>
>> On May 6, 2020, at 11:51 AM, john at kk9a.com wrote:
>> 
>> ?Interesting that Heil is not represented commercially. I believe
>that Bob Heil invented the talk box that Peter Frampton made famous. I
>use a Sony MDR-7506 for RTTY and CW but I do use a Heil ProSet IC for
>SSB.
>> 
>
>
>
>------------------------------
>
>Message: 22
>Date: Wed, 6 May 2020 17:04:10 -0400
>From: <tony.kaz at verizon.net>
>To: "'Jim Bruce'" <jimw3fa at gmail.com>, <elecraft at mailman.qth.net>,
>	<tson35 at icloud.com>
>Subject: Re: [Elecraft] Earpads Shedding
>Message-ID: <[email protected]>
>Content-Type: text/plain;	charset="utf-8"
>
>Jim,
>Do you remember what ones you got for the CM500?
>Tnx
>N2TK, Tony
>
>-----Original Message-----
>From: elecraft-bounces at mailman.qth.net
><elecraft-bounces at mailman.qth.net> On Behalf Of Jim Bruce
>Sent: Wednesday, May 6, 2020 4:31 PM
>To: elecraft at mailman.qth.net; tson35 at icloud.com
>Subject: Re: [Elecraft] Earpads Shedding
>
>I went online and got packs of the cloth headphone earmuff covers for
>mine. Work good, washable, stretchable, several in a pack, inexpensive.
>
>I got a small pack and large pack. large covers the yamaha 500
>headphones well.  Smaller ones cover the cheaper music headphones.
>
>Jim/W3FA
>
>On 5/6/2020 13:58, Tommy Judson via Elecraft wrote:
>> ...earpads are flaking pretty badly, leaving little back bits around 
>> the home office/shack?
>>
>> Took me a while to realize it was my earpads shedding, glad to read
>this isn?t an isolated occurrence.  Now how to remedy that problem?
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net Please help support this
>email 
>> list: http://www.qsl.net/donate.html Message delivered to 
>> jimw3fa at gmail.com
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:Elecraft at mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html
>Message delivered to tony.kaz at verizon.net 
>
>
>
>------------------------------
>
>Message: 23
>Date: Wed, 6 May 2020 13:33:25 -0400
>From: "Charlie T" <pincon at erols.com>
>To: <elecraft at mailman.qth.net>
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>Message-ID: <[email protected]>
>Content-Type: text/plain;	charset="UTF-8"
>
>If you can find them, "velour" pads are GREAT. 
>Very comfortable, Softer and NO flaking.
>I replaced the pads on my Sony MDR-7506's with them.
>I especially like these Sony's since they have excellent high frequency
>response (better than the CM500's) which is perfect for my high freq
>hearing loss.
>Not sure if they'll fit, but somebody out there must make velour pads
>for the CM500's.
>
>73, Charlie k3ICH
>
>
>
>
>-----Original Message-----
>From: elecraft-bounces at mailman.qth.net
><elecraft-bounces at mailman.qth.net> On Behalf Of Walter Underwood
>Sent: Wednesday, May 06, 2020 12:53 PM
>To: Elecraft Mailing List <elecraft at mailman.qth.net>
>Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>
>My CM500?s earpads are flaking pretty badly, leaving little back bits
>around the home office/shack. They still work fine. I purchased them in
>December 2012. I see that the same order has Eneloop XX batteries and a
>LowePro Edit 140 case, so that was all ordered to go with my brand-new
>KX3.
>
>Comments on my blog post suggested the Koss SB45 as another
>alternative. This also has an electret mic, but somewhat different fit
>over the ears, and it is cheaper.
>
>https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW
>
>Do not get the Koss SB40. That is the same headset as the Yamaha CM500,
>but with an inferior dynamic mic.
>
>The mic connector on my Yamaha CM500 is labeled ?KOSS?, for what that?s
>worth. I noticed that when choosing photos for my blog post.
>
>It is normal for earpads to wear out. I replaced the pads on my Grado
>SR225e phones after five years.
>
>wunder
>K6WRU
>Walter Underwood
>CM87wj
>http://observer.wunderwood.org/ (my blog)
>
>> On May 6, 2020, at 8:25 AM, N2TK via Elecraft
><elecraft at mailman.qth.net> wrote:
>> 
>> I bought replacement ear pad cushions and earpad covers for Koss
>UR20, headphones on eBay a while back for $14.24. They fit the CM500
>fine. A pain to change but worth it.
>> I have had very good results with CM500. They fit my head better than
>the Heil's which were too tight. I would rather have a material cover
>which I find more comfortable for wearing for many hours in a contest.
>I use a quarter of a paper towel between the headset cushions and my
>ears. That works fine.
>> And the CM500's are so cheap I bought a spare, just in case.
>> N2TK, Tony
>> 
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net 
>> <elecraft-bounces at mailman.qth.net> On Behalf Of Wes
>> Sent: Tuesday, May 5, 2020 9:45 PM
>> To: elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] CM500 headset on K3S and KX3?
>> 
>> The failures I have are the ear pads disintegrate.  Someone said Koss
>pads could work but that hasn't been my experience. I've found some
>'500s at estate sales where I snap them up.  Currently the law firm
>where my fiance is employed is working from home and she's using a set
>on her computer to "attend" on-line meetings.  I guess I can add "IT
>Manager" to my resume, since I'm helping her with her connections.  I
>second the use of VOX.
>> 
>> Wes  N7WS
>> 
>> On 5/5/2020 5:32 PM, Jim Brown wrote:
>>> On 5/5/2020 4:44 PM, Paul Gacek via Elecraft wrote:
>>>> For what its worth and everyones milage will vary, I had a brand
>new
>>>> CM500 that I used for a week of hard operating while on a pretty 
>>>> island and the boom came loose after a couple of days.
>>> 
>>> Your experience is unusual. In about 11 years, the only thing that 
>>> has ever gone wrong with my CM500s have been a broken cable, which, 
>>> unfortunately, is not replaceable. I'm kind of a klutz, so I'm hard 
>>> on cables, dropping them, kicking them, etc. Perhaps it got broken
>in shipping?
>>> 
>>> I've never used anything but VOX for SSB and digital modes. That's 
>>> always worked just fine as long as there's not loud noise (like when
>
>>> the XYL walks through the shack and lets the screen door slam). :)
>>> 
>>> 73, Jim K9YC
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft at mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net Please help support this 
>>> email
>>> list: http://www.qsl.net/donate.html Message delivered to 
>>> wes_n7ws at triconet.org
>> 
>> 
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net Please help support this
>email 
>> list: http://www.qsl.net/donate.html Message delivered to 
>> tony.kaz at verizon.net
>> 
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net Please help support this
>email 
>> list: http://www.qsl.net/donate.html Message delivered to 
>> wunder at wunderwood.org
>
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:Elecraft at mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html
>Message delivered to pincon at erols.com 
>
>
>
>------------------------------
>
>Message: 24
>Date: Wed, 6 May 2020 17:37:13 -0400
>From: Don Wilhelm <donwilh at embarqmail.com>
>To: Christophe GIBERT <gibertc at hotmail.com>,
>	"elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
>Cc: "support at elecraft.com" <support at elecraft.com>
>Subject: Re: [Elecraft] Elecraft K2 7855, alignment and test part II,
>	bad PLL frequency.
>Message-ID: <efc26548-8cb1-45a7-c683-03ca58273b55 at embarqmail.com>
>Content-Type: text/plain; charset=utf-8; format=flowed
>
>Chris,
>
>Your English is much better than my French!  I hope you can understand 
>the following:
>
>You have a Q19 that is not willing to work at the high frequency end of
>
>the PLL range.
>
>The proper thing to do is replace Q19 with a J310 FET that is better. 
>Order one from Elecraft (email to support at elecraft.com) with the part 
>number.
>
>What you can try is to add a small value capacitor (12 or 15pF) from U4
>
>pin 1 to U4 pin 12 (ground) to see if that restores proper function. 
>If 
>you do not have a stock of small capacitors, use the 12pF in the K2 kit
>
>which you have not yet installed and order a replacement from Elecraft.
>
>Proper functioning thru-hole J310s have been a problem since Elecraft 
>ran out of the old ones and found that they had been discontinued by
>the 
>manufacturer.
>
>I know of one ham in Europe who used an SMD J310 as a replacement - but
>
>if you consider that, know that the basing is not the same and you
>would 
>have to go from the data sheet to know which pin to connect to the 
>holes.  He mounted it on the bottom of the board.
>
>73,
>Don W3FPR
>
>On 5/6/2020 4:44 PM, Christophe GIBERT wrote:
>> Hi! First of all, sorry for my poor english, i?m french ;-)
>> 
>> I?m building my k2 number 7855.
>> 
>> In the first step of the 4mhz oscillator calibration, i get a
>frequency of 00500.00 instead of 12090.00
>> 
>> When i press BAND + : 00475.00 and BAND - : 12085.43 (stable).
>> 
>> I?ve tested probe on TP2, I?d 4913.52
>> 
>> I reviewed all components in the pll schematics and nothing seems
>wrong.
>> 
>> Please help me, i don?t know what to look for now.
>> 
>> Thanks a lot.
>> 
>> ?
>> Chris
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to donwilh at embarqmail.com
>> 
>
>
>------------------------------
>
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>http://mailman.qth.net/mailman/listinfo/elecraft
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>
>End of Elecraft Digest, Vol 193, Issue 12
>*****************************************