Operating question: FT-736r and HO-68/VO-52

Operating question: FT-736r and HO-68/VO-52
Hello:
I have a Yaesu FT-736r and I am wondering the proper way to set a few switches for the CW/SSB satellites HO-68 and VO-52.
I can set my transmit and receive in the middle of the uplinks and downlinks for these 2 satellites. - then- For these 2 satellites (2m-440) (inverting) how do I set the NOR/REV switch? and the USB/LSB switches for the 2 frequencies? A general rule for uplink freq and downlink freq (USB/LSB)??
(Trying to get it right - from the beginning...) Thanks, Bill - billwest007 (at) yahoo (dot) com

GE Bill,
Let's talk about VO-52
First, chose which vfo A or B. It does not matter, but it helps for operating different birds.
For this example, use vfo A.
Locate the Sat switch close to the left center and turn to TX.
Your TX for the bird will be 435 mhz LSB
Now turn your satellite switch to the RX position.
Your RX will be 145 mhz USB.
To tune or find your freq.: I decide what downlink freq I want use like 145.900. I place the RX in CW, then change to the TX to CW and dit my way til I hear it on 145.900. Then switch the TX to LSB and my RX to USB. You should hear your downlink just fine. Watch your power like 5 watts and tune your TX to your RX freq. It will move as the bird moves across the sky. Don't touch the RX please.
I hope this helps.
-----Original Message----- From: Bill West [email protected] To: [email protected] Sent: Sun, May 30, 2010 2:28 pm Subject: [amsat-bb] Operating question: FT-736r and HO-68/VO-52
perating question: FT-736r and HO-68/VO-52 Hello: I have a Yaesu FT-736r and I am wondering the proper way to set a few switches or the CW/SSB satellites HO-68 and VO-52. I can set my transmit and receive in the middle of the uplinks and downlinks for hese 2 satellites. then- or these 2 satellites (2m-440) (inverting) how do I set the NOR/REV switch? and he USB/LSB switches for the 2 frequencies? A general rule for uplink freq and ownlink freq (USB/LSB)?? (Trying to get it right - from the beginning...)
hanks, Bill billwest007 (at) yahoo (dot) com
______________________________________________ ent via [email protected]. Opinions expressed are those of the author. ot an AMSAT-NA member? Join now to support the amateur satellite program! ubscription settings: http://amsat.org/mailman/listinfo/amsat-bb

Hi Bill,
So, filling in more of the puzzle...
The purpose of the NOR and REV positions of the SAT knob are to set how the rig tracks the Receive and Transmit sides of the rig. This is a great help when tuning around the satellite's passband, looking for a QSO in progress or someone calling CQ.
As you know, the Rx setting controls the receive side of the rig, and Tx controls the transmit side, and the earlier email talks about how to adjust them to "find yourself". You can, of course, just twiddle the Receive side of the radio and scan the band, but then when you find something to participate in, what about the Transmit side? All that work you went through to find yourself was destroyed the moment you changed frequencies. Now you have to find yourself all over again, taking time, potentially interrupting the QSO, or missing the CQ. Wouldn't it be nice if the transmit and receive sides were locked, so that moving one would move the other as well? That's what the NOR and REV settings are for.
In NOR mode, increasing one side, moves the other an equal amount in the same direction. This is for satellites that are "non-inverting" (of which we currently have none). These satellites use the same sideband on both uplink and downlink, and increasing the frequency of the uplink moves the corresponding downlink up the same amount. So, you can see that the NOR setting will allow you to move the receive side of the rig around, and the transmit side will follow. Then when you find something to do, you're ready to go!
The REV setting is used for Inverting transponders. Increasing one side results in a decrease in the other, again matching what happens with your signals through the satellite.
So, use the Rx and Tx settings to find yourself in a quiet part of the band, then flip to NOR or REV, depending on the satellite, and tune around for some activity.
One final note... Because the Doppler shift is a function of frequency, the shift that gets applied to the uplink and downlink are different. This means that over the course of the satellite's pass, the magic combination of uplink and downlink where you found yourself at the beginning of the pass will drift apart. This means that periodically you will need to temporarily move off of NOR or REV mode, back to Tx or Rx (which ever is on the higher band) to refine your settings. It's a bit annoying, but you get used to it.
Hope this helps. Good luck!
Greg KO6TH
Date: Sun, 30 May 2010 12:28:55 -0700 From: [email protected] To: [email protected] Subject: [amsat-bb] Operating question: FT-736r and HO-68/VO-52
Operating question: FT-736r and HO-68/VO-52
Hello:
I have a Yaesu FT-736r and I am wondering the proper way to set a few switches for the CW/SSB satellites HO-68 and VO-52.
I can set my transmit and receive in the middle of the uplinks and downlinks for these 2 satellites.
- then-
For these 2 satellites (2m-440) (inverting) how do I set the NOR/REV switch? and the USB/LSB switches for the 2 frequencies? A general rule for uplink freq and downlink freq (USB/LSB)??
(Trying to get it right - from the beginning...)
Thanks, Bill
- billwest007 (at) yahoo (dot) com
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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participants (3)
-
Bill West
-
davekn4ok@aol.com
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Greg D.