[AK-VHF] 927.5 & 1296.100 Status

[Edward R Cole]

After our club luncheon at China-Sea I did a little more work on the 
900-MHz system.   I increased drive to 6w to bring up PA output to 
about 57w.  Going thru two RG-8/x jumpers to match the TNC TR relay 
and thru a N bulkhead barrel I get 50w to the antenna feedline (good enough).

But attaching the LMR-400UF jumper would not load properly (read dc 
50-ohms with dummy at other end but at 927.5 it looks like a short or 
so the PA says).  So I found a run of LMR-400 that shows 50w at the 
other end (no loss if you believe that).  Its considerably shorter 
which helps.  Ran out of time but will test connected to 10-foot of 
1/2-inch Heliax that connects to the loop-yagi tomorrow.  Hope the 
Heliax has survived.

If that tests good then the array will be raised for use on 
Saturday's Net.  That means I will have 50w on both 1296 and 927.5 
with low noise preamps and high gain loop-yagis.  Hoping this will 
work stations in Anchorage (they will need yagis).

This weekend is the CQ VHF Contest which brings out a lot of 6m 
operation in the lower-48 (so if 6m opens you will hear activity).  I 
plan to monitor 50.125 with 80w and 6-element yagi pointed to the 
West Coast.  Rules at:
http://www.qsl.net/a/ak-vhf//Contests/

Net begins on 144.200 USB at 9am.

73, Ed - KL7UW

At 11:16 PM 7/13/2016, Edward R Cole wrote:
>Just about have both working.  I have to replace a bad coax jumper 
>on the 927.5 TR relay (maybe tomorrow).
>
>I checked my 1296 MHz amp and preamp that feed a 45 loop-yagi 
>(20-dBi, Vert-pol) and have 50w.
>
>927.5 I tested all the relays thoroughly and had to replace two bad 
>jumpers.  Have 50w out of the amp and re-installed repaired 
>preamp.  I feed a 33 loop yagi (18 dBi, Vert-pol).
>
>Both should be ready for this weekends Net with 2m array back at 
>tower top.  927.5 & 1296 antenna are nested in the center of the 2m 
>array at 52-feet AGL.
>
>73, Ed - KL7UW
>http://www.kl7uw.com
>     "Kits made by KL7UW"
>Dubus Mag business:
>     dubususa at gmail.com
>
>______________________________________________________________
>ak-vhf mailing list
>Home: http://mailman.qth.net/mailman/listinfo/ak-vhf
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:ak-vhf at mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html

73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
Dubus Mag business:
     dubususa at gmail.com