I'm looking to replace a Repeater system antennae for a vhf system operating at 172 Mhz. Recieving and transmitting Frequencies are 2 Mhz apart. The antennae being replaced is a commprod 266-70 which worked fine for about ten years, not so good the last two years. Can someone recommend a good antenna for a system with the following characteristics?
-Antenna to be mounted on 33 metre tower. Line of sight from top of tower is 8-15 miles all directions. We need reliable coverage for a 30 mile radius, which the commprod 266-70 did provide when it was new.
- Repeater system is a kenwood transmitting at about 25 watts with 200 feet of 1/2 inch heliax cable as transmission line.(I'm losing about 10 watts in the transmission line. Is this a normal amount?)
- I've had one local company quote a CRX 150 Laird, also a Sinclair 217, with a more expensive option being a Sinclair SD214. These antennaes look totally different. Which one will work best?
Thanks in advance for any reccomendations.
-Antenna to be mounted on 33 metre tower. Line of sight from top of tower is 8-15 miles all directions. We need reliable coverage for a 30 mile radius, which the commprod 266-70 did provide when it was new.
- Repeater system is a kenwood transmitting at about 25 watts with 200 feet of 1/2 inch heliax cable as transmission line.(I'm losing about 10 watts in the transmission line. Is this a normal amount?)
- I've had one local company quote a CRX 150 Laird, also a Sinclair 217, with a more expensive option being a Sinclair SD214. These antennaes look totally different. Which one will work best?
Thanks in advance for any reccomendations.