Fw: Fw: Re: [HBR] Radio design advice

[windy10605 at juno.com]

Sometimes I need to let a design sit for a while before opening my mouth.
The Heathkit 3995Khz filter approach won't work for this design point
....happens when you are messing with several alternatives. Back to the
1750Kz IF (or 5350Khz IF) and 80/40m coverage like on the Simple-X, keep
the Heathkit VFO which is tweaked to support 5.2-5.7Mhz (or can be
duplicated with junkbox parts). Or, as Walt suggested ....(great idea)
"...... you could use a 5350 kcs IF (and crystal) with a 1650-1850 kcs LO
to tune 3500-3700 and 7000-7200.........". Ian and Mike are right from an
HBR viewpoint you want perfection for the mixer. This is anything but
perfection. This is simplicity.....but works. The "matching" GB-1 is
nothing to brag about either other than it is a true minimalist tube rig
and that's what the guys on the Amecoac1 reflector want. That's what I'm
after here.

So it's :
--------- Forwarded message ----------
Simplex-X2 :

1) Tuned preselector for 80/40 with plug-in coils, ceramic socket  
2) 6" x 8" x 2" chassis, painted grey hammertone, decal, ........like
GB-1
3) HW/SBxxx 6AU6 Osc, 3" x 3-1/2", 36:1 tuning rate dual Jackson Bros
drives, sunk dial
4) 6SN7 Pullen Mixer, feeding ......
5) 1750Khz Crystal filter, feeding......
6) 6S-?-7 fixed tuned 1750Kz regenerative detector (no BFO required, use
regen to compensate for the filter loss) 
7) 6SN7  for 2 stages of audio which should be good for headphones or a
small speaker.

Comments ? It's no HBR-xy but the idea is to make a really simple, but
effective, parts available today, tube receiver using octals (if you can)
to match the GB-1 Transmitter which uses a 6V6/6L6 on a 6x8x2 open
chassis.  

73 Kees K5BCQ