sek-surveyor
New Member
Very interesting discussion. I have just recently changed our Triumph 2/LS Combo to beast mode. I haven't had a chance to utilize it in the field, but it works great and is impressive in our parking lot.
The question that I have that relates to this discussion has to do with the FCC guidelines. I am pretty sure that per the link below, that the FCC allows for:
https://transition.fcc.gov/pshs/public-safety-spectrum/narrowbanding-faq.html#question_2_2
Any of the following meet the 12.5 kHz equivalent efficiency requirement:
I noticed an ealier post that showed (if I am reading it correctly) that the baud rate for D16QAM at 25kHz channel spacing is transmitting at 38.4 kbps. Doesn't that meet the FCC requirements? My radio range dropped off drastically when I changed to the 12kHZ channel spacing on our old unit. Am I wrong to assume that better radio range can be achieved using the 25kHz channel spacing?
Thanks,
DR
The question that I have that relates to this discussion has to do with the FCC guidelines. I am pretty sure that per the link below, that the FCC allows for:
https://transition.fcc.gov/pshs/public-safety-spectrum/narrowbanding-faq.html#question_2_2
Any of the following meet the 12.5 kHz equivalent efficiency requirement:
- One voice path in a 12.5 kHz channel
- Two voice paths in a 25 kHz channel
- Data operations on channels greater than 12.5 KHz must employ data rates greater than 4.8 kbps per 6.25 kHz channel, such as 19.2 kbps per 25 kHz channel
I noticed an ealier post that showed (if I am reading it correctly) that the baud rate for D16QAM at 25kHz channel spacing is transmitting at 38.4 kbps. Doesn't that meet the FCC requirements? My radio range dropped off drastically when I changed to the 12kHZ channel spacing on our old unit. Am I wrong to assume that better radio range can be achieved using the 25kHz channel spacing?
Thanks,
DR