Fw: RE: Fw: RE: [HBR] Restoration info

[windy10605 at juno.com]

OK, Jim !!  It's a design worth studying in my opinion.

73 Kees K5BCQ


--------- Forwarded message ----------
From: "James Amos (jimamos)" <jimamos at cisco.com>
To: "HBR Receiver List" <hbr at mailman.qth.net>
Date: Thu, 28 Jul 2005 09:39:24 -0400
Subject: RE: Fw: RE: [HBR] Restoration info
Message-ID:
<F1B57D925CE24D48B3E21E28A57F006F62BD55 at xmb-rtp-202.amer.cisco.com>

Kees,

I would like a copy of both documents.  

Also, you may have convinced me to go down and turn on my Drake 2B
(Instead of my R4-C or R390A)

Regards,
Jim Amos N8CAH

-----Original Message-----
From: hbr-bounces at mailman.qth.net [mailto:hbr-bounces at mailman.qth.net]
On Behalf Of windy10605 at juno.com
Sent: Wednesday, July 27, 2005 9:35 PM
To: hbr at mailman.qth.net
Subject: Fw: Fw: RE: [HBR] Restoration info

It's a 100 page Word document which I will distribute via email once I
get a list of names together. You can print it or file it as you wish. I
also have the 80 or so page RSGB Receiver document by G2DAF as a Word
document for those interested. They are both on my CD but occupy too
much space on the web site. They are both great pieces of info to have
if you are working on quality tube receivers. 

Right now, a friend of mine and I are working to improve the Drake 2B
receiver. Triple conversion without the typical string of IF stages. If
you can find one cheap, buy it. I've always thought the 2B was a great
example of a commercial tube type HF receiver of the early 60s timeframe
which is physically compact, sensitive (0.5uV or better), selective
(good permeability tuned passband), simple slide switches, multiple Hi-Z
AVC points, copper plate chassis (there are no "bad grounds" to tube
sockets), screws vs rivets, low power (less than 40W), "low" voltage
(less than 180VDC) and uniquely efficient design (have you seen the
outstanding use of vertical terminal strips ? super simple graticule
adjustment, etc). It also offers the distinct "ease of use" advantage of
bandswitching and crystal converters. Still an excellent design in this
day and age. Maybe some of you have some input on improving that design
?


73 Kees K5BCQ
************************************
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************************************
Visit the HBR Receiver Web Site with over 100 pictures of receivers and 
construction notes...... via http://www.qsl.net/k5bcq/ 
there is also a mirror (faster response)at http://k5bcq.edebris.com/


Retrieve reflector archived data via
http://mailman.qth.net/mailman/listinfo/hbr