Hi folks,

Well, the new antenna isn't built yet, but the satellite is in LU, and I still have the old antenna (9 element Quagi, crudely built from the ARRL Antenna Book) up on the rotisserie.

The 8:40pm pass went nearly over head, and I could hear my return clearly when the bird was above about 20 degrees. This is with 10w in the shack, which is 60' of 1/2" hardline plus 10' of RG8 away from the above mentioned Quagi. Tuning was fairly easy - I have computer control for the downlink rig, and I just tuned the uplink for clarity. Seems that I had to tune about 5khz high for best results. There was some QSB evident, but not too bad. The Quagi is, of course, a linear antenna, and is mounted horizontally polarized, and my downlink UHF antenna is 2x8 RHCP with a small preamp at the feed point.

The only problem I ran into was that the only QSO I had was with myself. Nobody else on!

Greg KO6TH

----Original Message Follows---- From: "Greg D." [email protected] To: [email protected] Subject: [amsat-bb] Re: AO-51 Mode L uplink LHCP or RHCP? Date: Sat, 16 Jun 2007 19:28:14 -0700

Linear will do too. I've got it right-handed, as it turns out, so it looks like I'm all set. Thanks!

Greg KO6TH

----Original Message Follows---- From: "wa6fwf" [email protected] To: "Greg D." [email protected] Subject: Re: [amsat-bb] AO-51 Mode L uplink LHCP or RHCP? Date: Sat, 16 Jun 2007 18:16:14 -0700

L is linear so it doesn't matter

U on the other hand

TX A (usually digital)LHCP TX B (usually analog) RHCP

73 Kevin wa6fwf

----- Original Message ----- From: "Greg D." [email protected] To: [email protected] Sent: Saturday, June 16, 2007 4:46 PM Subject: [amsat-bb] AO-51 Mode L uplink LHCP or RHCP?

Hi folks,

Ok, in a little panic here... Building a helix to get a bit more gain on the AO-51 mode L uplink, and I just realized that I don't know if it

should

be Left or Right-hand polarized. Which way should it go?

Thanks,

Greg KO6TH

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