[Elecraft] Driveway Distortion Demolition Derby

Tue May 5 12:35:05 EDT 2009

Hello Steve,

I totally agree with you!
I get very severe overloading problems with a Winradio G313/180e and the 
only
proposed solution by a group member was to use a smaller antenna!
I'm using an horizontal loop ~96 m perimeter and with this same antenna,
no problem with my K3. As i'm working mainly with JT65A(50W) and PSKnn 
(25W),
i get very good results. For SSB, like you for CW, i will be "obliged" 
to add some dB to
be able to be heard by a lot of stations perfectly received!( my idea is 
not to "break" pile-up!)

73 QRO fr Rudolf, HB9ARI
(66yo ham since 1970 but "younger" since i can play with my K3 #1212!)

Steve Ellington wrote:
> The complaint was not "ridiculous". The original observation was....The K3 
> distorts and the FT-817 doesn't under the same conditions.
>
> The poor guy was called stupid, ridiculous, ignorant and told he needs to 
> "study" and go back to school.
>
> I think he has a good question and I have yet to see a logical answer. 
> Claims that the K3 is "souped up" and exempt from strong signal overload is 
> the ridiculous part!
>
> If the K3 distorts on 109DB signals and the FT-817 doesn't then so be it. 
> It's a weakness. Just leave it at that. I'm sure the 817 has plenty more 
> weaknesses!
>
> Let's not let this list get like the TenTec reflector. Mention something 
> negative there and you are immediately put down or soon thrown off.
>
> I've recently subscribed to the IC-7600 Yahoo group just to watch how the 
> new radio was doing. So far I've seen two concerns. Some have a dimmer 
> screen saver than others and a few have had to do a master reset because of 
> audio drop out and it's starting to look like a glitch in some 3rd party rig 
> control program causing that. Otherwise, everyone seems satisfied. Of 
> course, those guys know that ICOM isn't going to respond to anything that's 
> said so maybe they just don't bother.
>
> I'm still enjoying my K3. Things have been rather lopsided lately however. I 
> am able to copy cw through the QRN better than the other guy, especially 
> when I take advantage of the NR. This gives me er...maybe 6db advantage or 
> so. Therefore I've ordered an ALS-600 to help make up the difference. The 
> K3's superior receiver is costing me money!
> Steve Ellington
> N4LQ at carolina.rr.com
> ----- Original Message ----- 
> From: "Robert Carroll" <w2wg at comcast.net>
> To: <elecraft at mailman.qth.net>
> Sent: Tuesday, May 05, 2009 10:13 AM
> Subject: Re: [Elecraft] Driveway Distortion Demolition Derby
>
>
>   
>> Guy-
>>
>> That's a nice response to  a really ridiculous complaint.
>> 73
>> Bob W2WG
>>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Guy Olinger, K2AV
>> Sent: Tuesday, May 05, 2009 9:50 AM
>> To: elecraft at mailman.qth.net
>> Subject: [Elecraft] Driveway Distortion Demolition Derby
>>
>> Two 100w mobiles in the same driveway and expecting linear response from 
>> the
>>
>> RX in one while transmitting on the other?  Talking about volts across the
>> antenna jack (or any of the connecting cables) here.  Who's the EE?  S9 is
>> 50 uv.  1 volt = 20 log 1/ .000050  = 86 over S9.  Maybe ten volts on the
>> antenna.  That's 106 over S9.
>>
>> Hearing some kind of distortion on a 100 over S9 signal is some kind of
>> desperately grave trouble in a K3 trouble worth attention?  Really want
>> Wayne spend precious development time figuring that out?  Personally I 
>> vote
>> for 10 Hz granularity on CW using width and shift.
>>
>> Thought the customary form of communication from thirty feet was audio off
>> the lips.  Need 100 watts on 60m to communicate thirty feet?  Audio
>> distortion could be the driveway version of RF in the shack. 10 volts
>> externally imposed RF wandering around on your cable of choice is a 
>> formula
>> for wierdness no matter where the station.
>>
>> Someone is really lucky they didn't smoke something.  And if the K3 did 
>> get
>> toasted in this driveway radio demolition derby, that would be the K3's
>> fault too, right?  Double fault, K3 was distorting the audio while the 
>> front
>>
>> end was being roasted.  Bad K3.  Bad K3.
>>
>> Some of the radios bandied about earlier were specifically designed in 
>> World
>>
>> War II to survive conditions related to an enemy was trying to kill the
>> operator.  I'd call that a design standard specifically requested and paid
>> for.  Since one tank could be next to another, I'd call that reasonable.
>>
>> Such radios ARE still made and paid for.  You really want to go pay for
>> military grade radios, you can get them, at a price far exceeding the MSRP
>> for a K3.  Use a kilowatt in your driveway. No problem.  Use 10 kw in your
>> driveway like the CB powerfests. No problem.
>>
>> Personally I'd like to keep the features I pay for confined to peacetime,
>> and it does not occur to me as good practice to be transmitting high power
>> in the same driveway with another radio on-band with a tuned antenna.
>> Others may see it differently but I consider the situation in the first
>> paragraph as being careless with a friend's property.
>>
>> We have contest stations with such situations possible, but we use 
>> filters,
>> stubs, remote receiving antennas, etc,  to make it possible to operate 
>> with
>> nowhere near a volt on-band.  Sometimes use radios borrowed from friends,
>> and guess who pays to repair a smoked front-end, and guess which 
>> embarrassed
>>
>> soul has to explain same to friend.
>>
>> Whether the audio was distorted in a smoke-it episode is really a low 
>> grade
>> consideration.
>>
>> 73,  Guy.
>>
>>
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>
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