[Boatanchors] Mods to Knight T-60?
qrv at kd4e.com
qrv at kd4e.com
Mon Sep 8 12:26:43 EDT 2014
If the carrier has been radically-suppressed but if a low-level
carrier is included (minimal carrier required to-be-determined)
then it's merely a carrier-suppressed AM (DSB w/carrier) signal
and should be detected.
However, is not a boatanchor HAM/SW AM receiver w/o a BFO (or easily
modified with one) common? Certainly all modern rigs have them.
The synchronous detector project is parallel to but not integrated
with the all-tube 160-10m project.
Thanks - David
> When you suppress the carrier, receiving on an AM receiver is difficult
> if not a practical impossibility. On an SSB receiver, either LSB or USB
> can be used.
> Glen, K9STH
> Website: http://k9sth.net
> On Sunday, September 7, 2014 8:09 PM, "qrv at kd4e.com" <qrv at kd4e.com> wrote:
> This article shows a simple mod to replace 6m with 160m:
> I can drive this with a WRL/Globe V-10 VFO.
> Rather than adding plate modulation I'd like to add a
> balanced modulator stage for DSB.
> That way the signal may be easily copied by AM or SSB
> receivers - making the venerable T-60 a more versatile
> transmitter. (Rx a Gonset G-66B or National NC-190.)
> Maybe a 7360 or 6JH8 or 6ME8 or other balanced modulator
> stage between buffer and multiplier?
> I suppose the Final would have to be modified from
> Class C to AB? Possible tweaks for linearity to the
> multiplier stage as well?
David Colburn, KD4E - Nevils, Georgia USA
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