Alamo-James Analog Link Update

The analog FM link between the Alamo Peak and James Ridge repeaters has been tentatively restored. Full testing of the system has not been accomplished, so fully functioning operations have not been verified; however, the comm paths I could test from Alamo Peak were checked this afternoon. The following results were observed:

1) Transmissions into the 147.220MHz repeater were re-transmitted on the 440MHz link w/ the proper PL tone.

2) Transmissions into the 147.340MHz repeater were re-transmitted on the 440MHz link w/ the proper PL tone.

3) Transmissions directly into the 440MHz link machine at Alamo are repeated on the 147.220MHz repeater.

I was unable to test an end-to-end transmission from Alamo-James or the reverse on 2m due to reception/transmission limits at the site from HT/mobile transmitters, so if anyone is able to verify the link is working, please send me an email detailing the experience. Also, I was unable to test the Weed repeater as part of the link, so any feedback on the whole linked system would also be appreciated.

I left the Alamo Peak 2m machine configured as an AMS repeater, so C4FM users should still be able to utilize Alamo; however, a functioning digital link from Alamo to James will be a bit more of a technical challenge…one which I continue to pursue.

Once I verify that the link is working again, I will replace the Kenwoods at James Ridge with the other two Yaesu machines, which will bring stand-alone C4FM capability to James in addition to Alamo Peak.

Once Alamo and James repeaters are swapped out, the plan is to install a 2.4GHz microwave link from James to Weed and upgrade the Weed repeater to a C4FM machine. With that configuration, we should have a working C4FM link between those two repeaters, as well as traditional analog linking.

In parallel, I am working to install an HRI-200 WIRES-X interface at Alamo Peak and downlink to a low-level internet connection. This will bring the Alamo Peak machine a capability to internet link to other YSF nodes/rooms around the globe. In conjunction, I will also establish an SMRC “room” which works in a very similar manner to a packet BBS – it provides a central place for C4FM users to connect to view news/message traffic, pictures, and voice memos which can be uploaded from any user to be viewed by all in the “room”.

Thanks to all for your patience as we work to put the system back together. It’s been quite a journey, but we’re slowly making progress.

Leave a Reply