Fw: Fw: Re: [HBR] G2DAF receiver

Fri, 3 Oct 2003 18:32:33 -0500

The G2DAF write-up in the RSGB 5th edition says "This is a later version
of an advanced design which was built by about 1,000 amateurs; by
reducing pre-mixer gain and by using push-pull balanced stages in the
front-end, it achieves a wide dynamic range while using conventional
valves."

Kees

--------- Forwarded message ----------
From: [email protected]
To: [email protected]
Date: Fri, 3 Oct 2003 18:20:17 -0500
Subject: Fw: Re: [HBR] G2DAF receiver

I have the G2DAF Mark 2 receiver info from the 5th edition of the RSGB
(uses a push-pull, unity gain, RF stage, crystal controlled HF osc,
5-5.5Khz VFO, 455Khz mechanical filters). The 4th edition of the RSGB
shows an earlier G2DAF receiver which uses a crystal controlled HF
oscillator for stability and a tuned IF. Both of these are impressive and
substantial receivers. Both are band switching so you loose some there
but gain ease of use. Ralph probably has the Mark 2 scanned ?? I don't
know if there is a later one ??

Some months ago I approached RSGB about putting the G2DAF info on the HBR
Website and give them credit, but have not received the "OK" to do so. So
we're limited to making "at cost" copies or scanning and making data
available as Ralph has done.

The ARRL had no problem with me using the QST HBR data as long as I gave
them credit.

Communications with some hams in UK indicate they were very popular and
are highly prized today if in good condition. 

G2DAF also designed some excellent transmitters, amplifiers and other
equipment.

73 Kees K5BCQ

--------- Forwarded message ----------
From: [email protected]
To: [email protected]
Date: Fri, 3 Oct 2003 18:37:09 -0400
Subject: Re: [HBR] G2DAF receiver
Message-ID: <3F7DC1D5.17746.2206320@localhost>

Ralph Fowler wrote:

> I have the G2DAF receiver scanned if anyone is interested.

There were at least three versions of that receiver.   One used a 
cascode RF stage, following that was one with a 6BZ6, then the one 
I described last night with a push-pull 7ES8 RF stage.  Is there a 
way you could put your scan up on the web so we could all take a 
look?

Walt
KJ4KV

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