[amsat-bb] Re: IC910

w4upd updwrb at bristor-assoc.com
Sat Nov 28 12:04:30 PST 2009

I tried working AO-51 the last couple of days on !.2Ghz, but no luck. I 
thought I heard myself a couple of times but sure. There was more 
activity than I expected to hear and I noticed that although the 
transponder signal was good as usual, the signals coming through were 
lower from those I have heard using the UHF uplink when on. I was using 
the usual 435.300 downlink as I do not have my stuff for 2.3Ghz put 
together yet.

My attempts to work AO-51 was an experiment which I really didn't expect 
to work as I have about 50 feet of 9913 which is actually in three 
sections to allow it to reach the rig (IC-910) with each section being 
spliced with a "N" barrel connector. Each of those induces a fair amount 
of lose, especially at 1.2ghz. Next, I had that running to a general 
purpose MFJ discone that runs from 50mhz - 1.3Ghz. So as I figure it, I 
probably had about .5 watts ERP to AO-51 at best, hi!

I plan on building a reasonable 1.2Ghz, maybe the loop one shown in the 
books as they appear to work well. I may look at getting or making a 100 
watt (2C39) amplifier. However, I did hear a couple of portables on the 
pass, so I suspect a reasonable antenna will work wonders. Not sure but 
I do not think the sat antennas will not do much good without 
considerable modifications. By the time you do that you might as well 
make one from scratch. They're not that difficult to make. Since I'm new 
to the 1.2Ghz operation, you might want to solicit from others that have 
more to contribute than I do.

Reid, W4UPD

Jack Barbera wrote:
> Thanks everyone for your input on adding a UX910 1200mhz band to my IC 910. 
> Santa came early.will be using LMR-600 as the run is under 100 ' and I have it. Next will be looking for an antenna.Have a number of sat T.V antennas and looking into possibly using the reflector and looking for a kit. Does this make sense or should I just go for a complete antenna?
> ThanksJack WA1ZDV 
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