Re: Pye T30FM transmitter and R17/R18 receivers
You don't say whether they are High band (148-174 mostly) or Low Band (68-88MHz) or could be P Band 79/101MHz?
I know a fair bit about these and have some info - but it is well buried.
T30FM IIRC had a low power PA Box - single output device about 10W-ish to a second square box usually containing a pair of devices to reach 30W. I have seen 45W or more from them.
They had a bit of an issue with power supply dissipation on high duty cycles. The 2N3055 on the heatsink at the rear gets a hard time. Regulator PCBs are often quite crunchy around the driver TR and resistors.
I forget the R17/18 but I think you might be right that one had a front end box with nice helical resonators while the other only had a front end PCB - pretty much stolen from a Westminster.
Last edited by Jon_G4MDC; 9th Mar 2018 at 5:31 pm.
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