Ad blocker detected: Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by disabling your ad blocker on our website.
Do you enjoy making your own equipment or antennas? Discuss construction and design in here.
2 posts • Page 1 of 1
- New User
- Posts: 3
- Joined: 31 Jul 2018, 12:24
Has anyone tried linking 2 cheap radios speaker to mic with tx rx offset to make a repeater? I wonder how much extra ground could get out of it. I spend a lot of time in the welsh hills might be interesting to try
- Radio Addict
- Posts: 726
- Joined: 10 Jun 2007, 22:41
- Call Sign: G4RMT
- Location: North East Suffolk
In fact - many smaller commercial repeaters are actually two hand=held radios inside - connections just tagged to the circuit board, covered in sealer. They usually have a small pcb that manages the difference between audio levels, and use the receive indicator - maybe an LED, or a display element, to switch it into transmit. Those crossband adaptors do similar things, but usually use a Vox circuit to put it into transmit that can behave a little unpredictably. Performance wise - the main problem is desensitisation - the transmit frequency making the receiver a bit deaf - but the wider the spacing the better. If you put one of these on top of the mountain - the range can be quite impressive.
Who is online
Users browsing this forum: No registered users and 5 guests