Won't receive above 439.995

Post Reply
K9CZ
Posts: 2
Joined: Wed Mar 04, 2020 12:35 am

Won't receive above 439.995

Post by K9CZ »

We are using it for a C4FM repeater. The openspot quit receiving the repeater transmitter after working for a few years. I did a factory reset plus FW upgrade and reprogrammed it but still have the same problem. It works fine in the 436-439.995 Mhz but seems to quit when going to 440 Mhz and above. Any ideas? Thanks K9CZ

User avatar
HA2NON
SharkRF team
SharkRF team
Posts: 5030
Joined: Fri Mar 25, 2016 3:33 pm
Contact:

Re: Won't receive above 439.995

Post by HA2NON »

Please check antenna connections or try replacing the antenna, and also if the Modem is in C4FM Half Deviation mode, re-run C4FM Half Deviation AutoCal, or manually adjust the C4FM Half Deviation demode mode on the Modem page for the lowest BER.
Norbert "Nonoo" Varga, HA2NON
SharkRF Team

K9CZ
Posts: 2
Joined: Wed Mar 04, 2020 12:35 am

Re: Won't receive above 439.995

Post by K9CZ »

Do you really think the antenna connection would quit a just a few cycles? No we are not in half duplex.

User avatar
HA2NON
SharkRF team
SharkRF team
Posts: 5030
Joined: Fri Mar 25, 2016 3:33 pm
Contact:

Re: Won't receive above 439.995

Post by HA2NON »

Try increasing/decreasing the RX frequency in 100Hz steps around the RX frequency you want to use.
Norbert "Nonoo" Varga, HA2NON
SharkRF Team

Post Reply