I bought a used FR4000 and just hooked it up to my antenna. Everything seems to work ok except the repeater keeps opening my HT squelch on the TX channel (when the repeater is not transmitting) if I am within about 20-30ft of the unit even through a wall. The antenna is on top of a 40ft tower and I am using Heliax so I am pretty sure it is the FR4000 box itself and it opens the HT squelch even when the repeater is not transmitting (TX LED off). It is not spurious environment noise because if I turn the FR4000 off the HT goes quiet, if I turn the FR4000 back on the HT squelch opens and I get white noise (but again the repeater does not indicate that it is transmitting). When I key up the repeater everything works as expected (and the TX light comes on). My HTs are ICOM F60's by the way (it is the same on multiple HT units). I do not have this problem with them and my GR1225, just the "new" FR4000.
I can turn the HT squelch WAY up and it will stop, but I need the HT to work in proximity to the repeater and at range so a high squelch is not ideal.
Again, I don't have this issue with the GR1225 when it is on and connected to the same antenna system in the same freq range, so I am uncertain if this is normal for a FR4000 or not. Or is there some issue? Any ideas?
Edit: For what it is worth, I tried some Beofeng HTs and it does the same thing. If I am within a room or so of the repeater the HT squelch intermittently, but frequently, opens on the HT RX channel (repeater TX) and nothing but noise. As far as I can tell the repeater housing is radiating on the TX channel even when it is not officially transmitting.
Thanks
I can turn the HT squelch WAY up and it will stop, but I need the HT to work in proximity to the repeater and at range so a high squelch is not ideal.
Again, I don't have this issue with the GR1225 when it is on and connected to the same antenna system in the same freq range, so I am uncertain if this is normal for a FR4000 or not. Or is there some issue? Any ideas?
Edit: For what it is worth, I tried some Beofeng HTs and it does the same thing. If I am within a room or so of the repeater the HT squelch intermittently, but frequently, opens on the HT RX channel (repeater TX) and nothing but noise. As far as I can tell the repeater housing is radiating on the TX channel even when it is not officially transmitting.
Thanks
Last edited: