From waltah at earthlink.net  Sat Dec  3 17:14:31 2005
From: waltah at earthlink.net (Walter A. Hutchens)
Date: Sat Dec  3 17:14:37 2005
Subject: [HBR] G2DAF Parts
Message-ID: <4391D277.20202.2CC40D5@localhost>

G3 ??? is continuing to auction original NOS Electroniques coil sets 
for the G2DAF home brew receiver.   Selling prices are gradually 
coming down (last batch sold at around $30) and I figure they'll 
eventually reach my number.

The current auction is at:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5837714525

However he says "Not suitable for the Mk1 design only using cascade 
RF stage or 6BZ6 RF and ECC85 mixer.  Mk 2 coils not available."   
That means these coils are for the 'early Mk I' I believe -- the one 
using a cascode 6CW7-6BE6 front end.   That one is interesting, 
certainly an excellent receiver for the time, but NOT the equal of 
the Mk 2 which is probably the best practical (you could build it 
without an engineering degree or machine shop) homebrew ham band 
receiver ever.

The problem is that the Mk 2 uses a push-pull front end requiring 
center tapped coils.   The Mk I designs are single ended and these 
coils presumably were made for that.   I don't know why he specifies 
they're for the cascode version only but the seller is good about 
answering questions if anyone's interested in bidding.

The early design could surely be adapted to use a 6EH7 RF stage and 
triode mixer with minimal effort and would be a fine performer.

Does anyone know if Electroniques ever made a set of coils for the Mk 
2 design?

He also has some other items of possible interest to the receiver 
builder; here's a nice looking two speed dial assembly:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5837713668

Sort of like the National MCN but (a) two speed, and (b) appears to 
have a molded plastic face/housing.   It has always been a curiosity 
to me that no American maker made one with a molded plastic enclosure 
and a ball drive.    Olsen and others did import a fairly cheap-
looking Japanese dial of that design.

There are also bandswitch parts, coil forms, and a couple of 260 
mmf/section 3-gang tuning caps.

Thanks to the gentleman who told me privately that this coil set 
originally cost £35.00.   WOW.   

Walt Hutchens
KJ4KV
From gswynar at durham.net  Sun Dec 11 12:17:07 2005
From: gswynar at durham.net (Ed Swynar)
Date: Sun Dec 11 12:20:31 2005
Subject: [HBR] 1929 AWA QSO Party --- What's a 1923 P-P Colpitts Sound
	Like...?
Message-ID: <000f01c5fe76$bb5d0a00$bd305a45@CompaqS5000>

Morning All,

In case you never worked me yet in the 1929 QSO Party that's on right now, give me a buzz & I'll share a 1.94 MB digital recording with you --- courtesy of Dan (NI9Y) --- of how my 1923 push-pull Colpitts (a.k.a. "The Rollins Rocket") sounded in the mid-west last night on 40-meters...

(Thanks, Dan!)

~73~ Eddy VE3CUI - VE3XZ

PS: Total QSO count as of the time of this writing: 50. How's the rest of the gang doing...?
