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Old September 20th 08, 12:31 AM posted to rec.radio.amateur.homebrew
Tio Pedro Tio Pedro is offline
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First recorded activity by RadioBanter: Jan 2008
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Default Self-excited Beam Deflection mixers?? Opinions???


"ken scharf" wrote in message
. ..
Bob wrote:
I was thinking of using compactrons in the set, a single 6AR11 for the

85 khz IF, a 6D10 for the product detector and bfo, a 6AF11 for the AF
stage and S meter amp. A 6AG11 would serve as an AGC tube and AM
detector. The second (third?) mixer would be a 6BE6 (455-85), the first
and second mixers would be 7360's (expensive!). The first (xtal) hfo
would be solid state (maybe a pll), the second hfo (vfo) would also be
solid state. I have several nice three gang capacitors from ARC-5
receivers with dial gear drive that would work nicely. The completed set
would look more like the 2C because of the dial unless I ever find another
Edystone dial. (I had one in the junk box for a few years and sold it on
ebay to someone building an HBR. Got a kings ransom for it too).


The 6JH8 should work as well as the 7360 in a receiver mixer.
Swan changed to the 6JH8, probably for cost reasons.
( http://members.shaw.ca/pacifictv/cartridg.htm )

Not to make you feel bad, Ken... But, I still have an Eddystone
squirreled away for my HBR project. I think the Drake 2C
version makes more sense, though. The plug in coils and
oscillator LO scheme used by W6TC in the HBR
series leaves a bit to be desired.

Pete