Fw: [HBR] Rookie here

[Ed Swynar]

Hi All,

Re. my earlier posting, make that the 1969 ARRL HANDBOOK that The Mate For
The Mighty Midget receiver is featured in, and NOT the 1929 edition...!

Fat fingers here --- sorry!

~73~ Eddy VE3CUI - VE3XZ



----- Original Message -----
From: "Ed Swynar" <gswynar at durham.net>
To: <waltah at earthlink.net>; "HBR Receiver List" <hbr at mailman.qth.net>
Sent: Sunday, January 08, 2006 5:29 PM
Subject: Re: [HBR] Rookie here


> Greetings All,
>
> Walt is right on the money 100% --- do NOT start out building your
all-time
> "dream machine" right from the get-go just yet! Get some practical "wins"
> under your belt first...
>
> I committed the error back in 1982 with the undertaking of Doug
Blakeslee's
> experimental 75-meter receiver, which was described in QST back in the
early
> 70's...big mistake! I would have been FAR wiser to go for something along
> the lines of The Mate For The Mighty Midget (see 1929 ARRL HANDBOOK, or
> April 1966 QST), which I ultimately did do, some 14 years later...
>
> After that small project, I felt qualiified --- and experienced enough ---
> to SUCCESSFULLY tackle things like a 4-tube 1929-style regenerative
> receiver, & The QST Super-12 1929-style 12-tube superhet, which I finished
> here a couple of years ago...
>
> Funny thing is, I would STILL like to build Blakeslee's ultiimate DX
> machine...I KNOW I could do it some justice a second time around...
>
> ~73~ Eddy VE3CUI - VE3XZ
>
>
>
>
>
> ----- Original Message -----
> From: "Walter A. Hutchens" <waltah at earthlink.net>
> To: "HBR Receiver List" <hbr at mailman.qth.net>
> Sent: Sunday, January 08, 2006 5:20 PM
> Subject: Re: [HBR] Rookie here
>
>
> > Steve said:
> > > I'm like to homebrew one heck of a good receiver...and would
appreciate
> > > your generous help in the matter.
> >
> > This is what I've wanted to do all my life -- I mean, since about 16
y.o.
> > Unfortunately it took 50-some years for my design and construction
skills
> to
> > get to where I could hb ANY receiver and get it to work.   And I still
> have
> > two or three good unfinished (not quite working) projects sitting around
> for
> > the day when my skills catch up with the challenges I dreamed up.
> >
> > Thus, I'd suggest starting with something not above three tubes unless
you
> > already have some vacuum tube construction experience.    There's just
so
> > darn much art to learn and it can only be learned by doing.
> >
> > When you have *A* project that works, you'll know what you're ready to
do
> > next and have some idea which way you want to twist the trade-offs that
> > N2EY mentioned.    If you are feeling fairly comfortable I don't think
you
> > could do better than something like the HBR-8.    With plug-in coils you
> can
> > get whatever tuning ranges you like, by winding appropriate coil sets.
> >
> > I think I'd start with the receiver theory in the Radio Amateurs
Handbooks
> > of the mid-late 60's.   There are also some fine project receivers
there.
> > The RSGB handbooks Jim mentioned are also excellent on theory.   Beyond
> > that I suggest G2DAF's extended discussion of receiver design
principles;
> I
> > believe that that was added to the HBR CD available from our listowner.
> >
> > The conclusions in G2DAF's paper are somewhat dated, but the issues and
> > the way you think about them in a design, are timeless.
> >
> > Current project is a substantial complexification of the Handbook 2X4.
7
> > tubes: 35W4 rectifier, 12AT7 push-pull mixer, 12AU7 push-pull
oscillator,
> > 2x 19JN8 IF, 1/2 19JN8 (triode, diode connected) bias rectifier, 1/2
> > 19JN8 (triode) AGC detector, 1/2 12AU7 plate detector, 19JN8 1st audio
> > stage, 1/2 12AU7 2nd audio, 1/2 19JN8 (triode) xtal BFO.   IF is 5400,
LO
> > tunes 1400-1900 giving coverage 3500-4000 and 6800-7300.  Half lattice
> > crystal filter.
> >
> > This one works well but 'transformerless' design of a high gain
selective
> HF
> > superhet is not for the faint of heart because of the decoupling issues
> > associated with having two separate grounds that have a voltage between
> > them.
> >
> > Walt
> > KJ4KV
> > ************************************
> > 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
> >
>
>
> ************************************
> 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
>