[Collins] 75A4 and SB 610

[Dr. Gerald N. Johnson]

On Tue, 2007-06-12 at 07:55 -0400, Stuart Martin wrote:
> Dave,
> 
> The science of using the SB-610 for "true" receiver signal analysis was
> documented by H.M. Goosier, W6VFR, in Ham Radio Magazine, March 1972, pg.
> 36. In his "Monitoring SSB Signals" article, W6VFR describes how the 75A-4
> and 75S- series, using the AM bandwidth, allows full wide-bandwidth signal
> analysis. It's similar to what I did in the Navy with R-390A's, only the
> monitor scope was a bit more sophisticated.
> 
> Stu, k2qde
> 
Certainly using the AM filter gets a better sample of the distorted
transmitted signal than looking after the SSB filter, but some badly
distorted signals are wider than that and the AM filter will have
cleaned up some of the splatter.

-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer