[Boatanchors] Mods to Knight T-60?

[Brian Carling]

It is only likely to be compatible with a.m. conversations if it uses reduced carrier. The suppressed a carrier DSB is pretty useless for that application.

Best regards - Brian Carling
AF4K Crystals Co.
117 Sterling Pine St.
Sanford, FL 32773

Tel: +USA 321-262-5471




> On Sep 8, 2014, at 12:26 PM, "qrv at kd4e.com" <qrv at kd4e.com> wrote:
> 
> 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:
>> 
>> http://home.comcast.net/~chnord/T-160/T-160.htm
>> 
>> 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?
>> 
>> http://www.bignick.net/ssb/282_.pdf
>> 
>> I suppose the Final would have to be modified from
>> Class C to AB? Possible tweaks for linearity to the
>> multiplier stage as well?
>> 
>> WDYT?
> 
> 
> 
> -- 
> 
> David Colburn, KD4E - Nevils, Georgia USA
> 
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