[Heathkit] SB-610 phase networks needed

[Peter Markavage]

Couplate (PEC) information is here:
http://www.peacockcollectibles.com/radios2/radios3/pec.htm

Pete, wa2cwa

On Fri, 21 Sep 2007 15:08:30 -0500 "K3PID" <k3pid at sbcglobal.net> writes:
> I am restoring an SB-610 monitor scope and find that the two tone 
> generator which is supposed to have frequencies of 1500 Hz and 1950 
> Hz have both shifted. I am reading about 1900 and 2350. The phase 
> shift networks P.E.C 84-39 & 84-40 are the frequency determining 
> components and my guess is that the internal capacitors have shifted 
> enough to move the frequency. I realize that the exact frequency 
> doesn't much matter as long as it is inside the passband but I would 
> like to make it match the specification...
> 
> Does anyone have these in NOS or if not then does anyone have the 
> detailed specifications for the networks?
> 
> 
> Regards
> Ron H. - K3PID