[AMRadio] 10M AM Frequencies

Thu Sep 29 16:15:44 EDT 2011

Hi Again Gary,

Now THIS was a deal:

http://www.ebay.com/itm/HEATHKIT-SB310-/180725161171?pt=LH_DefaultDomain_0&hash=item2a140f1cd3#ht_500wt_1413

For eighty bux you coulda gotten the whole enchilada, filter included! I recall not too many years ago when the AM filter in these things ALONE went for that kinda $$$...

On the other hand, THIS is more like it:

http://www.ebay.com/itm/HeathKIT-SB-310-SHORTWAVE-RECEIVER-Refurbished-NICE-/120776033939?pt=LH_DefaultDomain_0&hash=item1c1ed00693#ht_3211wt_1398

They're still out there, alright---just gotta dig a little...

~73~ de Eddy VE3CUI - VE3XZ

********************************************************************************************************************

On 2011-09-29, at 1:00 PM, Eddy Swynar wrote:

> Hi Gary,
> 
> I got the schematic for the HB filter from a former Heath engineer, who relayed it to me on-line---I'll have to see if I might still have it someplace, though (I built it some years ago)...!
> 
> It was based upon the extra-wide AM filter that Heath used in their SWL "SB" receiver---the SB-310...? Much better than the restricted AM filter that was optional for the '301.
> 
> Anyway, I used an old Heath SSB filter (the large size one) for the new filter's foundation, & simply replaced the crystals in it with the ones specified on the original specs. I then re-sealed the case with solder, & mounted it below the chassis because the larger physical size wasn't compatible with the mounting holes in the '301 (if I'd had an SB-300, it would have been perfect).
> 
> The crystals were purchased from JAN Crystals in Fort Meyers---the final cost was about the same as a replacement AM filter on eBay at the time.
> 
> Have you made inquiries, or shopped around for an SB-310 SWL AM filter...? I haven't bothered to look ever since I made my own here, but they DID show up fairly regularly on eBay at the time...
> 
> ~73~ de Eddy VE3CUI - VE3XZ
> 
> 
> *****************************************************************************
> 
> 
> On 2011-09-29, at 12:42 PM, Gary Schafer wrote:
> 
>> Hi Eddy,
>> 
>> Interested in your home brew AM filter for the heathkit. 
>> I have an SB300 with the factory AM filter but it is too narrow to be useful
>> at all.
>> 
>> 73
>> Gary  K4FMX
>> 
>>> -----Original Message-----
>>> From: amradio-bounces at mailman.qth.net [mailto:amradio-
>>> bounces at mailman.qth.net] On Behalf Of Eddy Swynar
>>> Sent: Thursday, September 29, 2011 10:46 AM
>>> To: Jack Dayton; Discussion of AM Radio in the Amateur Service
>>> Subject: Re: [AMRadio] 10M AM Frequencies
>>> 
>>> Hi Guys,
>>> 
>>> For my money, the absolute BEST value in a vintage tube-type receiver is
>>> the venerable Heathkit SB-301...
>>> 
>>> Those rigs are incredibly sensitive, easy as pie to work on, have 1-KHz
>>> dial resolution, and are CHEAP in to-day's market...
>>> 
>>> Their only drawback with this rig is the LACK of an AM filter! You can
>>> buy one on eBay (if you'e willing to pay the price!), or roll your own,
>>> as I did here...
>>> 
>>> My second choice is the Drake R-4 series of receivers. Again, very
>>> sensitive, easy to work on, 1-KHz dial resolution, coverage of at least
>>> the first 15-KHz of the 10-meter AM window without added crystals, AND
>>> they play well in the AM mode, "...right outta the box!" The early
>>> models go for a tad more than the Heathkit receivers, though...the "C"
>>> series for considerabley more.
>>> 
>>> ~73~ de Eddy VE3CUI - VE3XZ
>>> 
>>> 
>>> *********************************************************
>>> 
>>> 
>>> 
>>> On 2011-09-29, at 9:57 AM, Jack Dayton wrote:
>>> 
>>>> Well if money is no object or maybe it is but Ebay has house full of
>>> receivers
>>>> 
>>>> we all know that if it was me I'd use whatever  Rice Rig I had on hand
>>> and
>>>> 
>>>> wait till my Gooder receiver was done and save money..No disrespect
>>> meant
>>>> You do what you want Another receiver,.. I Liked Lafayette Receivers
>>> they
>>>> work well do what you want and don't cost a mint. Realistic produced a
>>> few S.S.
>>>> rigs that worked well in AM.
>>>> 
>>>> 
>>>> 73
>>>> Jack
>>>> KA3ZLR
>>>> 
>>>> 
>>>> 
>>>> ________________________________
>>>> From: Rob Atkinson <ranchorobbo at gmail.com>
>>>> To: Discussion of AM Radio in the Amateur Service
>>> <amradio at mailman.qth.net>
>>>> Sent: Thursday, September 29, 2011 9:12 AM
>>>> Subject: Re: [AMRadio] 10M AM Frequencies
>>>> 
>>>> NC300
>>>> 
>>>> rob
>>>> k5uj
>>>> 
>>>> On Wed, Sep 28, 2011 at 5:57 PM, Harry Petersen sr
>>>> <peerlesshrp at gmail.com> wrote:
>>>>> I need a good old all band receiver my Collins 75a-2 is down for
>>>>> repair miss it bad.do  you know of anything even  close ?
>>>> ______________________________________________________________
>>>> Our Main Website: http://www.amfone.net
>>>> AMRadio mailing list
>>>> Searchable Archives: http://www.mail-
>>> archive.com/amradio at mailman.qth.net/
>>>> List Rules (must read!): http://w5ami.net/amradiofaq.html
>>>> List Home: http://mailman.qth.net/mailman/listinfo/amradio
>>>> Post: AMRadio at mailman.qth.net
>>>> To unsubscribe, send an email to amradio-request at mailman.qth.net with
>>>> the word unsubscribe in the message body.
>>>> 
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>> ______________________________________________________________
>>>> Our Main Website: http://www.amfone.net
>>>> AMRadio mailing list
>>>> Searchable Archives: http://www.mail-
>>> archive.com/amradio at mailman.qth.net/
>>>> List Rules (must read!): http://w5ami.net/amradiofaq.html
>>>> List Home: http://mailman.qth.net/mailman/listinfo/amradio
>>>> Post: AMRadio at mailman.qth.net
>>>> To unsubscribe, send an email to amradio-request at mailman.qth.net with
>>>> the word unsubscribe in the message body.
>>>> 
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>> 
>>> ______________________________________________________________
>>> Our Main Website: http://www.amfone.net
>>> AMRadio mailing list
>>> Searchable Archives: http://www.mail-
>>> archive.com/amradio at mailman.qth.net/
>>> List Rules (must read!): http://w5ami.net/amradiofaq.html
>>> List Home: http://mailman.qth.net/mailman/listinfo/amradio
>>> Post: AMRadio at mailman.qth.net
>>> To unsubscribe, send an email to amradio-request at mailman.qth.net with
>>> the word unsubscribe in the message body.
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>> 
>> ______________________________________________________________
>> Our Main Website: http://www.amfone.net
>> AMRadio mailing list
>> Searchable Archives: http://www.mail-archive.com/[email protected]/
>> List Rules (must read!): http://w5ami.net/amradiofaq.html
>> List Home: http://mailman.qth.net/mailman/listinfo/amradio
>> Post: AMRadio at mailman.qth.net
>> To unsubscribe, send an email to amradio-request at mailman.qth.net with
>> the word unsubscribe in the message body.
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
> 