[Milsurplus] BC-9: NETTED! WoooHOOO!

Hubert Miller Kargo_cult at msn.com
Sun Feb 19 21:06:24 EST 2017


At first i too thought that the substantial voltage change receive - transmit would have a larger effect in frequency shift,
but inquiring on the regen receiver group disabused me of that notion. Particularly so in this circuit, which is high-C,
with something like 500 pF of tuned circuit capacitance. 

My thinking is that with frequency shift <1 kHz the set is workable as is, even in a net. Your net is only going to be
maybe 4 - 5 stations tops, anyway. As long as it's understood the NCS is NOT going to retune ever, but instead defines
the working frequency ( as is stated in the "calibration procedures" in the manual ), and as long as any other station
can detect that another station is commencing transmit, the receiving station can tune for usable beat pitch. There will
be some retuning, but NCS doesn't move, and it works. Also, people can deal with a variety of beat notes, from over 1 kHz
down to about 100 Hz. 
-H


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