[Heathkit] Heath audio, rough around the edges.

[Jim Shorney]

On Sat, 17 Jun 2006 08:25:46 -0400, Robert P. Ward wrote:

>I've got a SB104A that also had less than desirable receive audio. Made
>lots of changes with very little results. Volume was never an issue. The mod
>that corrected mine to VERY pleasing audio was suggested by Bill Carver,
>W7AAZ. I set the BFO carrier frequencies at the -20 dB points of the SSB
>crystal filter.


How does this relate to the carrier oscillator frequency before you shifted
it? How did you measure the -20 dB level (RF voltmeter, scope, another RX,
etc.)? If this could be related to where the -3 dB point for TX audio ends
up, it could be an easy adjustment for anyone to make with an audio
generator.

Inquiring minds wanna know...


--
TR7/RV7, TR6/RV6, T4XC/R4C, L4B, NCL2000, SB104A, R390A, GT550A/RV550A - all vintage, all the time!