Hi all,
I would like to make a ground plane antenna to monitor my local P25 system which is at 772 MHz. The signal comes in okay, but the transmissions break a lot and is very difficult to follow the conversations (my antenna is indoors). The broadcasting antenna is only 10 miles away, so an outdoor antenna would definitely improve the reception, but I still want to build my own antenna that may be mounted on the roof or attic.
I have looked at quite a few designs, but most of them use UHF/SO-239 mount even though the connectors are only good up to 300 MHz. Will that limitation have an impact on the antenna's performance near 800 MHz? If so, should I use a BNC mount instead since they are good to a much higher frequency?
I found this five pack of BNCs for a really low price: https://www.amazon.com/uxcell-Femal...coding=UTF8&psc=1&refRID=Z1X0TPHTTTP5STGWFD2Y
Here is one of the websites I took a look at to make the antenna: https://m0ukd.com/calculators/quarter-wave-ground-plane-antenna-calculator/
By the way, I am using two SDRs with Unitrunker and DSD+ to monitor the P25 system.
Thanks!
I would like to make a ground plane antenna to monitor my local P25 system which is at 772 MHz. The signal comes in okay, but the transmissions break a lot and is very difficult to follow the conversations (my antenna is indoors). The broadcasting antenna is only 10 miles away, so an outdoor antenna would definitely improve the reception, but I still want to build my own antenna that may be mounted on the roof or attic.
I have looked at quite a few designs, but most of them use UHF/SO-239 mount even though the connectors are only good up to 300 MHz. Will that limitation have an impact on the antenna's performance near 800 MHz? If so, should I use a BNC mount instead since they are good to a much higher frequency?
I found this five pack of BNCs for a really low price: https://www.amazon.com/uxcell-Femal...coding=UTF8&psc=1&refRID=Z1X0TPHTTTP5STGWFD2Y
Here is one of the websites I took a look at to make the antenna: https://m0ukd.com/calculators/quarter-wave-ground-plane-antenna-calculator/
By the way, I am using two SDRs with Unitrunker and DSD+ to monitor the P25 system.
Thanks!