[HBR] membership ...HBR
Tom Azlin, N4ZPT
tom at n4zpt.org
Tue Apr 25 22:17:31 EDT 2006
Hi Kees,
Yes, the idea has seemed to catch on again.
While I have not gotten enough parts together to build an HBR from
scratch, I picked up a all but coils finished HBR-15C (aka HBR-13C with
two extra tubes) that was built by Bob Moul, W4DE, starting back in
1968. He gave it to Mike Steussy, AE4R, in 2002 who traded it to me in
2005 for a couple other partially build receivers by another local ham.
I think that Bob did build the coils, got the receiver working and set
it aside. The coils were not to be found in 2002. This is going to be
my 2007 project, i.e. after I retire! My next goal is a matching
transmitter.
Anyway, I now have that receiver along with all the building notes. And
a box of coil forms and trimmer capacitors. I will have to take some
photos and provide them to you for the HBR web site.
73, Tom Azlin n4zpt
windy10605 at juno.com wrote:
> The membership count is now up to 157 HBR members. Who would have
> thought, 47 years after the HBR-14 article in 1959, there would still be
> so much interest in building good tube receivers. Even if tube receiver
> building articles basically faded away 35+ years ago.
>
> Looking through the design and building (not by me) of these two "LWM-3"
> SSB Transceivers built from the GE Ham News articles in 1961/1962 sure
> tells me that these must have really pushed the envelope of what a Ham
> radio builder could do back then. Twenty-two tubes, double conversion,
> all band, 200Khz segments, car radio permeability slug tuning mechanism
> (not the VFO), 2.5Mhz-2.7Mhz Command Set VFO, 6AR8 sheet beam 1st Mixer,
> Collins mechanical or Crystal Lattice filter, a 12BY7 output tube
> designed for an external amp, all aluminum, and slip in/out mount for
> easy mobile use. Hats off to the guys who tried this one.
>
> I guess the LWM-3 came from KWM-2 ....this being the "next version" and
> the author's name is W.C Louden, W8WFH. At the end of the article he says
> "....delivers performance comparable to fine commercial equipment costing
> several times the $100 to $250 in parts required.
> Moreover, the LWM-3 is a literal gold mine of design, circuit,
> mechanical, and construction ideas. (he's got that right) Nearly every
> amateur will find some feature that he can apply to his own equipment."
>
> 73 Kees K5BCQ
> ************************************
>
More information about the HBR
mailing list