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Jumbospot : unable to RX RF signal
Posted: Fri Apr 10, 2020 8:20 am
by HB9FLL
Hi everyone,
I just received my JumboSpot kit + RPI Zero, to change my old DVMega-Raspberry
Everything is configured, but the JumboSpot can't receive RF signal ...
I tried DMR, Dstar and C4FM.
Only C4FM (with FT70) seems to receive and transmit correctly.
But in DMR / Dstar, impossible to be received by the jumbospot. I'm going to check what's wrong with mmdvmcal.
On the JumboSpot board, RX offset and TX offset are indicated : 0
Results : No problem with mmdvmcal, my signal is correctly received in DMR (not tested with Dstar). By default my BER is below 2%
Probably a little offset of +100 to be optimal (BER 1.6%).
Everything seems to work with mmdvmcal, but why nothing is received in the dashboard ? A bug in pistar ?
Any idea on this problem ?
I check with a SDR (R820T on my PC) and both Jumbospot / Anytone D878UV seems to transmit on the same frequency
For the moment i'm stuck with this problem ...
Thanks for your suggestions !
73's
Re: Jumbospot : unable to RX RF signal
Posted: Fri Apr 10, 2020 10:11 am
by M1DNS
Look over this as a possible fix for DSTAR
viewtopic.php?t=42
Sent from my SM-G935F using Tapatalk
Re: Jumbospot : unable to RX RF signal
Posted: Fri Apr 10, 2020 5:47 pm
by HB9FLL
Thanks for this information, i'm going to try
But the problem exist in DMR too ?
Edit :
Contain of the live log during a dstar transmit :
Live Logs
Starting logging, please wait...
M: 2020-04-10 19:11:30.446 D-Star, non repeater RF header received from HB9FLL
M: 2020-04-10 19:11:52.698 D-Star, non repeater RF header received from HB9FLL
M: 2020-04-10 19:13:25.283 D-Star, non repeater RF header received from HB9FLL
What does it mean?
Thanks
Re: Jumbospot : unable to RX RF signal
Posted: Sat Apr 11, 2020 4:32 pm
by AF6VN
HB9FLL wrote: ↑Fri Apr 10, 2020 5:47 pm
M: 2020-04-10 19:11:30.446 D-Star, non repeater RF header received from HB9FLL
M: 2020-04-10 19:11:52.698 D-Star, non repeater RF header received from HB9FLL
M: 2020-04-10 19:13:25.283 D-Star, non repeater RF header received from HB9FLL
What does it mean?
Thanks
Off the top of my head -- it probably means your radio is configured for SIMPLEX operation, and hence is not sending the proper routing instructions in the packet header. You haven't identified what radio you have for D-STAR mode. The following is from my TH-D74A...
Took me a while to figure out how to get into DV mode on the hotspot frequency but... Simplex (DV) mode
Code: Select all
M: 2020-04-11 16:17:08.214 D-Star, non repeater RF header received from AF6VN
Putting it back into DR mode (but not specifying a gateway routing)... Repeater (DR) mode with 0.0Hz Tx/Rx offset
Code: Select all
M: 2020-04-11 16:17:42.967 D-Star, received RF header from AF6VN /D74A to CQCQCQ
M: 2020-04-11 16:17:44.295 D-Star, received RF end of transmission from AF6VN /D74A to CQCQCQ , 1.5 seconds, BER: 0.0%
Issuing a link command from the radio (after reselecting the hotspot via the D-Star repeater menu, just to make sure the full configuration is correct)
Code: Select all
M: 2020-04-11 16:20:45.646 D-Star, received RF header from AF6VN /D74A to REF030CL
M: 2020-04-11 16:20:45.657 D-Star link status set to "Linking to REF030 C "
M: 2020-04-11 16:20:45.771 D-Star link status set to "Linked to REF030 C "
M: 2020-04-11 16:20:46.981 D-Star, received RF end of transmission from AF6VN /D74A to REF030CL, 1.5 seconds, BER: 0.0%
M: 2020-04-11 16:20:49.045 D-Star, received network header from AF6VN /INFO to CQCQCQ via REF030 C
M: 2020-04-11 16:20:56.004 D-Star, received network end of transmission from AF6VN /INFO to CQCQCQ , 7.0 seconds, 0% packet loss, BER: 0.0%
Re: Jumbospot : unable to RX RF signal
Posted: Sun Apr 12, 2020 12:43 pm
by HB9FLL
AF6VN wrote: ↑Sat Apr 11, 2020 4:32 pm
HB9FLL wrote: ↑Fri Apr 10, 2020 5:47 pm
M: 2020-04-10 19:11:30.446 D-Star, non repeater RF header received from HB9FLL
M: 2020-04-10 19:11:52.698 D-Star, non repeater RF header received from HB9FLL
M: 2020-04-10 19:13:25.283 D-Star, non repeater RF header received from HB9FLL
What does it mean?
Thanks
Off the top of my head -- it probably means your radio is configured for SIMPLEX operation, and hence is not sending the proper routing instructions in the packet header. You haven't identified what radio you have for D-STAR mode. The following is from my TH-D74A...
Took me a while to figure out how to get into DV mode on the hotspot frequency but... Simplex (DV) mode
Code: Select all
M: 2020-04-11 16:17:08.214 D-Star, non repeater RF header received from AF6VN
Putting it back into DR mode (but not specifying a gateway routing)... Repeater (DR) mode with 0.0Hz Tx/Rx offset
Code: Select all
M: 2020-04-11 16:17:42.967 D-Star, received RF header from AF6VN /D74A to CQCQCQ
M: 2020-04-11 16:17:44.295 D-Star, received RF end of transmission from AF6VN /D74A to CQCQCQ , 1.5 seconds, BER: 0.0%
Issuing a link command from the radio (after reselecting the hotspot via the D-Star repeater menu, just to make sure the full configuration is correct)
Code: Select all
M: 2020-04-11 16:20:45.646 D-Star, received RF header from AF6VN /D74A to REF030CL
M: 2020-04-11 16:20:45.657 D-Star link status set to "Linking to REF030 C "
M: 2020-04-11 16:20:45.771 D-Star link status set to "Linked to REF030 C "
M: 2020-04-11 16:20:46.981 D-Star, received RF end of transmission from AF6VN /D74A to REF030CL, 1.5 seconds, BER: 0.0%
M: 2020-04-11 16:20:49.045 D-Star, received network header from AF6VN /INFO to CQCQCQ via REF030 C
M: 2020-04-11 16:20:56.004 D-Star, received network end of transmission from AF6VN /INFO to CQCQCQ , 7.0 seconds, 0% packet loss, BER: 0.0%
HI Dennis,
You're right
After a new programmation of Id51, it works.
I don't know why I need this specific configuration with the jumbospot, because on my old dvmega-rpi (with pi star 4), I don't need it...
So, concerning the jumbospot : dstar works now, as expected.
But nothing with DMR. Nothing in the live log. Just the RX led on the jmbo board...
For remind, no problem with BER according mmdvmcal
Any idea why pi star doesn't receive my DMR signal?
Thanks
73
Re: Jumbospot : unable to RX RF signal
Posted: Sun Apr 12, 2020 6:13 pm
by AF6VN
HB9FLL wrote: ↑Sun Apr 12, 2020 12:43 pm
You're right
After a new programmation of Id51, it works.
I don't know why I need this specific configuration with the jumbospot, because on my old dvmega-rpi (with pi star 4), I don't need it...
Interesting -- since I created the snippets above using a DV-Mega R-Pi3b combination running Pi-Star 4.1.0
So, concerning the jumbospot : dstar works now, as expected.
But nothing with DMR. Nothing in the live log. Just the RX led on the jmbo board...
If "General Configuration" has "Node Type" PRIVATE, make very sure that the DMR ID in the configuration also matches that programmed into your radio.
Re: Jumbospot : unable to RX RF signal
Posted: Tue Apr 14, 2020 6:36 am
by HB9FLL
This is the case : my D878UV have the same ID as my JumboSpot (and also my DVMega).
No live logs in DMR on my jumbospot
I'm going to compare the DMR / MMDVM settings between my DVMega (which is working) and the new JumboSpot
Re: Jumbospot : unable to RX RF signal
Posted: Tue Apr 14, 2020 3:55 pm
by AF6VN
HB9FLL wrote: ↑Tue Apr 14, 2020 6:36 am
I'm going to compare the DMR / MMDVM settings between my DVMega (which is working) and the new JumboSpot
If you have both on-line at the same time, make sure the DMR configuration "DMR ESSID" has different values for the two systems.