I have been trying your program in order to resolve a problem I am having with the FT1D not being able to communicate with a hotspot. Although I clearly hear YSF being transmitted from the hotspot on the FT1D, the hotspot does not "hear" the FT1D and shows no received data at all in its log. I was hoping your program would yield some useful information.
I have compiled and installed the program as described. I have also set up my RTLSDR as per the "Getting Started" guide and centred the transmission on the channel as shown. I am using the default hotspot frequency of 438.800MHz. Although I clearly see the FM and Digital spike and it is exaclty centred on the receiving channel, there are no FICH packets being output anywhere. This is at least consistent with the hotspot!
The following are set up as per default:
samp_rate = 2M (2e6)
decimator = 25
channel_bandwidth = 15k
These I have set:
center_freq = 438.3M (438.3e6)
target_freq = 438.764(438.764e6) - arrived at by experimentation as per "Getting Started"
Everything else is as per default and untouched.
When transmitting I see the spike at just under 438.8 on the wideband graph.
Spike is precicely centered on the Channel frequency graph.
Modulation is between -0.6 and +1.6 using 1W on the radio, between -0.8 and +0.8 when using 2.5W.
I am not sure how to interpret the Demod and Symbols graph but can only say that something does appear when the PTT is pressed.
If I can provide any further information please ask. I would be interested to know whether it is possible to access the raw data being transmitted? Or at least the raw frame data before it is discarded?
I have been trying your program in order to resolve a problem I am having with the FT1D not being able to communicate with a hotspot. Although I clearly hear YSF being transmitted from the hotspot on the FT1D, the hotspot does not "hear" the FT1D and shows no received data at all in its log. I was hoping your program would yield some useful information.
I have compiled and installed the program as described. I have also set up my RTLSDR as per the "Getting Started" guide and centred the transmission on the channel as shown. I am using the default hotspot frequency of 438.800MHz. Although I clearly see the FM and Digital spike and it is exaclty centred on the receiving channel, there are no FICH packets being output anywhere. This is at least consistent with the hotspot!
The following are set up as per default: samp_rate = 2M (2e6) decimator = 25 channel_bandwidth = 15k
These I have set:
center_freq = 438.3M (438.3e6) target_freq = 438.764(438.764e6) - arrived at by experimentation as per "Getting Started"
Everything else is as per default and untouched.
When transmitting I see the spike at just under 438.8 on the wideband graph. Spike is precicely centered on the Channel frequency graph. Modulation is between -0.6 and +1.6 using 1W on the radio, between -0.8 and +0.8 when using 2.5W. I am not sure how to interpret the Demod and Symbols graph but can only say that something does appear when the PTT is pressed.
If I can provide any further information please ask. I would be interested to know whether it is possible to access the raw data being transmitted? Or at least the raw frame data before it is discarded?