On 2/25/2013 12:38 AM, Sal wrote:

BANDS: This is a 220 beam intended for roof mount on my
daughter/son-in-law's house in Livermore CA to see if we can hit the Condor
Connection, which is all on 220. I'm in San Diego, with a nearby Condor
machine. My newly-licensed son-in-law thinks it would be a hoot if we could
talk directly, home-to-home. (I don't want to encourage him to buy an HF
rig for possible use on 10m, since fickle propagation has the potential to
be a buzz kill for a new ham. Upgrade to General is an unknown. He's not
ready for IRLP.)

Condor has two possible repeaters, one on Mount Hamilton (24 mi, by San
Jose) and one on Mount Vaca (50 mi.). Neither is a slam dunk from Livermore
because of terrain blockage. I'm hoping 50W & 10 dB gain will work. I did
some Longley Rice modeling here

http://lrcov.crc.ca/main/ and I'm hopeful.

I have alternate possibilities. The WIN System has 440-band repeaters on Mt
Oso (25 mi.) and on Loma Prieta (40 mi.) but also with terrain issues. ( I
already have a 26-element 440 beam; it models out to about 14 dBd gain.)

Those distances would be no problem except for the blockage. I can do 80
miles with 5 watts off an omni if my RF's don't bump into nuthin' first.

I expect the finished 220 beam to have about 10dBd gain and I have 50 watts
available.

Thanks for the link to Lionel's info. I'll check itout.

"Sal"
(KD6VKW)



Sounds like a plan. Good luck.

If there are any 6m machines around the terrain becomes a lot less of a
problem. If, of course, you have a 6m FM rig. Around here, Minneapolis
metro, we have a few machines that have multiple inputs and outputs.
(Not really, they are individual cross-linked rptrs, but that's just
details). Maybe your area has some.

tom
K0TAR