Hi George,
You are one of many who have said manual tuning is best, and after so many similar comments, I should probably give that a whirl.
Of course this will vary for rig and doppler, but I'd be curious to know what you find your tx frequency to be at mid pass?
The reason for asking is the published spec is
Uplink 435.150 - 435.130 MHz LSB (Inverting) Downlink 145.950 - 145.970 MHz USB
Implying that a RX of 145.960 (mid band) would have a TX of 435.140. From my tests it appears that I would actually have to transmit on 435.156 to hear myself at mid-pass. That, of course, appears to be outside of the published passband, and those published specs probably prevent anyone new to the bird from ever finding themselves.
I appreciate and data or feedback.
73, Bob, WB4SON
On Mon, Oct 26, 2015 at 12:21 AM, George Henry ka3hsw@att.net wrote:
I have found that computer tuning for AO-73 simply doesn't work... the satellite frequency drifts enough that your up- and downlinks won't stay in sync for long. I leave my downlink frequency alone as much as possible (unless needed to chase the other guy), and manually adjust the uplink, and that has worked well for me.
George, KA3HSW
----- Original Message ----- From: "mm0kjg via AMSAT-BB" < amsat-bb@amsat.org> To: amsat-bb@amsat.org Sent: Sunday, October 25, 2015 6:24 AM Subject: [amsat-bb] Ao 73 problems
Hello all.
I seem to have a wee problem with working Ao-73. The problem I cant work it at all. I am hearing people talking but when I attempt to find my downlink nothing heard. I have tried sending cw up and tuning downlink and also tuning uplink and nothing. I have set up tuning for 145.950 down and 435.150 up. Am missing something here? I spoke to my good friend and very good Sat operator Derrick Gm0fmw and he also cant access it with a fairly good antenna set-up. We are both in Edinburgh Scotland Is this the problem? Please all help will be appreciated .
Thanks Kev MM0KJG _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb