adamfancher
Member
Hi all,
I live just about right on top of a local radio tower that carries, among other things, my state's P25 network.
I currently have an RTL-SDR in conjunction with a 30 dB low-noise amplifier, which is more than enough gain to pull in the signals coming out of the tower.
I would like to monitor the input frequencies as the network passes data packets and can only see the downlink on the repeater's output frequency.
As one might imagine, the radios transmitting to the tower are too weak for me to pick up.
If I'm standing right next to the tower with my scanner, and can hear the input being repeated to the output, the signal is clearly getting to where I am standing.
I figure the big difference is that there is a tower top amplifier to pull them in.
I've looked around a little bit at what's available, I can get a brand new TTA for $1600 (way out of my price range) or a used, discontinued, undocumented one for a few hundred.
I'm not dead set on a TTA if there is another power amplifier available, but I haven't been able to find much and any recommendations or guidance are appreciated.
My target frequency is 806MHz
Thanks!
I live just about right on top of a local radio tower that carries, among other things, my state's P25 network.
I currently have an RTL-SDR in conjunction with a 30 dB low-noise amplifier, which is more than enough gain to pull in the signals coming out of the tower.
I would like to monitor the input frequencies as the network passes data packets and can only see the downlink on the repeater's output frequency.
As one might imagine, the radios transmitting to the tower are too weak for me to pick up.
If I'm standing right next to the tower with my scanner, and can hear the input being repeated to the output, the signal is clearly getting to where I am standing.
I figure the big difference is that there is a tower top amplifier to pull them in.
I've looked around a little bit at what's available, I can get a brand new TTA for $1600 (way out of my price range) or a used, discontinued, undocumented one for a few hundred.
I'm not dead set on a TTA if there is another power amplifier available, but I haven't been able to find much and any recommendations or guidance are appreciated.
My target frequency is 806MHz
Thanks!