30m robust packet tx inhibit

Paulo CT1ETE

Hi,

I am trying to TX with my Flex 6400M on 10147.3 kHz which is the frequency in EU for Robust Packet APRS. That frequency is inhibited by the radio. Band Plan for Region 1 allows 10130 - 10150 for narrow band modes - digimodes. What can I do?

Thanks & 73

Paulo CT1ETE

Mike-VA3MW

For some reason the radio thinks you are out of band. This can be affected by your HPF setting.

What is the vfo frequency, the tx bandwidth you are using and if the VFO frequency + the HPF setting is greater than 10150Khz, then the radio will inhibit transmit.

Tell me a bit more if the math makes sense.

Paulo CT1ETE

Well. I need to be in DIGU. If I go to USB, TX is enabled. So, DIGU bw is greater than 2.7.

Paulo CT1ETE

I've set the TX bw accordingly. Thanks Mike.

Mike-VA3MW

Did that solve it?

Paulo CT1ETE

Yes, Mike. I can't exceed 2.700 bandwidth on TX, because I only have 2700 from 10147.3 to 10150. It solved, thanks.

Mike-VA3MW

Excellent. Glad it worked out.