Very similar to what the Marines call "Re-Trans" setup. But it used 2 separate antennas. One for transmit and the other for receive. Would that be possible for 2 KG-1000 radios in repeater mode? Use 2 antennas instead of a duplexer?
A duplexer allows the user to utilize one antenna. Without a duplexer, you would need two antennas. And, yes, we used 'Re-Trans' setups in the Marines. However, I didn't understand exactly how they worked back then.
Nice video. Couple things I would like an answer to: 1) does it matter which TX/RX is tuned to TX or RX? I see them marked as HIGH and LOW. 2) this may be part of question 1, but the internal coils are different. Why? if Question 1 Matters what happens if you tune them backwards? Which I can see being done easily because my radio TX Freq. and the repeater TX freq. are not the Same.
The Low side is designed to pass the low frequency and reject the High. The coupling is slightly different between the two sides of the duplexer. I have tried to tuned them opposite and didn't really have a lot of luck. The pass was really bad while the reject was ok.
Tuning those things is no fun, I did one 20 years or so ago. I would not even know where to start now. That one had WAY bigger cans. Had borrow.a spectrum analyzer.
Thank you Dave! Very good information, addressed my issue precisely. Jeff in Colorado
Thank you, and I'm glad your questions were answered!
Thanks Dave, for video & recent technical assistance.
Very similar to what the Marines call "Re-Trans" setup. But it used 2 separate antennas. One for transmit and the other for receive. Would that be possible for 2 KG-1000 radios in repeater mode? Use 2 antennas instead of a duplexer?
A duplexer allows the user to utilize one antenna. Without a duplexer, you would need two antennas. And, yes, we used 'Re-Trans' setups in the Marines. However, I didn't understand exactly how they worked back then.
Nice video.
Couple things I would like an answer to:
1) does it matter which TX/RX is tuned to TX or RX? I see them marked as HIGH and LOW.
2) this may be part of question 1, but the internal coils are different. Why?
if Question 1 Matters what happens if you tune them backwards? Which I can see being done easily because my radio TX Freq. and the repeater TX freq. are not the Same.
The Low side is designed to pass the low frequency and reject the High. The coupling is slightly different between the two sides of the duplexer. I have tried to tuned them opposite and didn't really have a lot of luck. The pass was really bad while the reject was ok.
Hi got a question about the low side
Is it possible to use as the tx
Never use ten words when you can use ten thousand.
Tuning those things is no fun, I did one 20 years or so ago. I would not even know where to start now. That one had WAY bigger cans. Had borrow.a spectrum analyzer.