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QEI Quantum E transmitter

Posted: Thu Nov 07, 2019 8:03 am
by TPT
Looking for information on dip switch settings for the exciter portion. Unit works, makes power, 100 watt transmitter.

This transmitter has a separate power supply , about 3 RU, connected to the transmitter part by thick cable, which is also about 3 RU. The exciter portion is on the underside of the transmitter, single DIP switch, bunch of IC's.

Re: QEI Quantum E transmitter

Posted: Thu Nov 07, 2019 8:49 am
by Kelly
It looks like QEI still supports the E-series. Have you tried contacting them for a manual? https://qei-rf.com/legacy-broadcast-transmitters/

Re: QEI Quantum E transmitter

Posted: Sat Nov 09, 2019 3:39 am
by ChuckG
I remember having to tweak up the amplifier tuning in that after changing frequency. It's only sorta- agile.

Re: QEI Quantum E transmitter

Posted: Tue Nov 12, 2019 6:53 pm
by Kent T
Also make sure your tetanus shot is current before poking inside. Lots of sharp edges inside. Not the most pleasant transmitter to repair.

Re: QEI Quantum E transmitter

Posted: Wed Nov 13, 2019 2:39 pm
by Kelly
Kent T wrote:
Tue Nov 12, 2019 6:53 pm
Also make sure your tetanus shot is current before poking inside. Lots of sharp edges inside. Not the most pleasant transmitter to repair.
So true! Those sharp aluminum edges were so much fun in a QEI tube transmitter PA cavity. Lot's of great places for high voltage to arc to ground.

Questionable Engineering Inside