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allester666 · 03-30-2011, 11:09

The programming software/cables have arrived for both the radios and repeaters. Upon reading the radios default channels, I determined that channels 1 - 3 were pre-programmed at the factory. Channel 1's freq was set to 146.03. The radios operate between 146-174 according to the manual...so while its an number, it does match what was determined by a spectrum analyzer. I set the CTCSS tone to 150.0, and as before I am able to talk from the MBITR to the ICOM. I still unable to talk from ICOM to MBITR. This will not stop the project in its tracks, but it would be nice to have the option to have two way coms with the locals...I will continue to investigate this side of the problem.

I had ordered one VHF antenna, but it has yet to arrive. A second antenna will be needed if a duplexor is not used, which I prefer not to in this situation. I dont want to limit traffic to one TX/RX freq if the locals decide to set up a "backup channel" structure.

I have constructed 2 100ft cables made of RG213, with N style connectors to terminate to the repeaters, and PL259 connectors on the opposite side to terminate into the antenna's SO239 connection.

Still hoping someone can provide a good blue-print for a antenna in the 146-174 range! Any takers?

03-30-2011, 11:09	#11
allester666 SF Candidate Join Date: Dec 2006 Posts: 50	Project Update The programming software/cables have arrived for both the radios and repeaters. Upon reading the radios default channels, I determined that channels 1 - 3 were pre-programmed at the factory. Channel 1's freq was set to 146.03. The radios operate between 146-174 according to the manual...so while its an number, it does match what was determined by a spectrum analyzer. I set the CTCSS tone to 150.0, and as before I am able to talk from the MBITR to the ICOM. I still unable to talk from ICOM to MBITR. This will not stop the project in its tracks, but it would be nice to have the option to have two way coms with the locals...I will continue to investigate this side of the problem. I had ordered one VHF antenna, but it has yet to arrive. A second antenna will be needed if a duplexor is not used, which I prefer not to in this situation. I dont want to limit traffic to one TX/RX freq if the locals decide to set up a "backup channel" structure. I have constructed 2 100ft cables made of RG213, with N style connectors to terminate to the repeaters, and PL259 connectors on the opposite side to terminate into the antenna's SO239 connection. Still hoping someone can provide a good blue-print for a antenna in the 146-174 range! Any takers? __________________ Our nations enemies do not deploy for 15 months, 6 months or 2 weeks and return home. They are constantly analyzing and adapting to our tactics. Train hard and keep your best knife sharp!
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