|
Post by K7REX-Dan on Feb 5, 2017 8:36:40 GMT -8
I don't know yet if this will work with DMR or C4FM (doubtful) but it works GREAT on D-STAR.
I have my 50w D-STAR simplex hotspot that covers several miles working with my openSPOT: This requires a dual-band FM radio in cross-band repeater mode, mine is connected to an outside antenna on top of a 50 foot tower. One side of the dual-band radio is on VHF and the other side is on the same UHF frequency as is the openSPOT. The VHF side is my 50w D-STAR hotspot frequency and through the cross-band repeat function it is bridged to the openSPOT on UHF; UHF side of the cross-band repeater radio is on low power. NOTE: Both sides of the cross-band repeater radio has to be in FM mode for this to work.
Notes: I am using an Icom IC-2820H radio in FM mode as my cross-band repeater radio. Not all radios that will do cross-band repeat will work, but for those that do, they work great... Side Note: If using an IC-2820H, the Digital Monitor setting has to be set to "DIGITAL" to prevent auto-FM/DV switching.
Please note that this same method works well with DVAPs and DVMEGAs. I have not tried this using the DV4mini....
Dan / K7REX
|
|
|
Post by kg7vrv on Aug 24, 2017 19:01:12 GMT -8
This works without digital voice mode?
|
|
|
Post by W6KD on Sept 17, 2017 14:27:32 GMT -8
This works without digital voice mode? Yes, absolutely. The cross-band repeating radio is only receiving and rebroadcasting a GMSK siagnal, which is an analog representation of a digital stream. As long as the radio does not alter the audio (i.e. with interstage filtering or any other processing that could induce phase shift or clipping of the analog waveform) then the radio serving as the repeater need not have any digital encode/decode capability at all, and even if it does (like an IC-2820) it is not using it while cross-band repeating. Regards Bob, W6KD
|
|