[Hammarlund] Favorite Hammerlund Receiver
Carl
km1h at jeremy.mv.com
Mon Dec 12 16:38:55 EST 2011
----- Original Message -----
From: "Kenneth G. Gordon" <kgordon2006 at frontier.com>
To: "Hammarlund Radios" <hammarlund at mailman.qth.net>
Sent: Monday, December 12, 2011 3:21 PM
Subject: Re: [Hammarlund] Favorite Hammerlund Receiver
> On 12 Dec 2011 at 13:40, Todd, KA1KAQ wrote:
>
>> There's a lot to be said for single conversion.
>
> Less noise, for one (a BIG one).
>
> Back when I was either given or traded-for an essentially new BC-779
> (which was given to me apparently because it had essentially NO BFO
> injection), I used the 6N7 noise limiter tube to build a triode
> product-detector which I copied from Heathkit's SB-100 in it and
> connected that in place of the diode detector.
>
> BOY! What a completely amazing difference!!!!! :-)
>
> I was completely amazed at the quietness, apparent sensitivity, and
> generally sweet, sweet recovered audio, and the detector seemed to
> work as well, or better, for AM as it did for CW/RTTY/SSB.
>
> That double-preselection on ALL bands was a real winner as far as I
> was concerned.
>
> I don't remember ever turning that receiver off after that for a
> number of years. On 20 meters, when listening to a weak CW signal, I
> noticed a very slight drift back-and-forth, probably 10 cycles or a
> bit more, perhaps. It gave those signals a very pleasing sound.
>
> I used that receiver for RTTY on 20 meters also.
>
> In fact, at one time I operated an 80 meter to 20 meter RTTY repeater
> for handling traffic.
>
> Ken W7EKB
You couldnt afford to leave it on 24/7 now!
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