Randy,

I use a standard 4 Mhz TTL oscillator rather then making one. Any frequency
in the 2-6 mhz range will work. Yes, you will need some amplification after
summing the two receivers together. Not sure how much gain you will need,
so you will need to experiment with that....

Regards,
Larry Cochrane
Redwood City, PSN


At 09:52 AM 1/25/00 -0800, you wrote:
>Hi,
>
>I'm looking at the S-G construction notes on the PSN file.  Does anyone have
>advice or experience with component substitution,  operation on 12 volts
>instead of the 16 volts shown or other general comments?  What about using
>the XTAL from a TV picture tube which I think is about 3.49 MHz?  Would any
>of the diodes in the TV also be suitable?  Does the design require further
>amplification and how much?  Thanks for any advice.
>
>Randy
>randallpratts@..............
>
>
>_____________________________________________________________________
>
>Public Seismic Network Mailing List (PSN-L)
>
>To leave this list email listserver@.............. with the body of the 
>message: leave PSN-L
>

_____________________________________________________________________

Public Seismic Network Mailing List (PSN-L)