You can also use the programming software that comes with the radio (if the seller provided it) If not is a free download from Kenwood. Nice thing about the D72A it it has a USB port as opposed to TH7, which needed a serial port

Rick Tejera K7TEJ Saguaro Astronomy Club www.SaguaroAstro.org Thunderbird Amateur Radio Club www.w7tbc.org

On November 8, 2016, at 15:56, John Brier johnbrier@gmail.com wrote:

You need to store the memories as split frequencies or as the manual calls them, "Odd-split Repeater Frequencies." It's in the full electronic manual. See page 2 in file 'TH-D72_02_MEMORY CHANNEL_E.pdf'

The basics of it are this. You program a simplex receive frequency like normal and then go to the VFO and set the transmit frequency and then store it like normal to the same memory channel, except in addition to pressing >OK to store it at the final step, you hold down the PTT button before hand and while you press >OK.

To compensate for doppler you need to store the following memories:

# Receive Transmit 1. 437.560 437.540 2. 437.555 437.545 3. 437.550 (same, don't set split here) 4. 437.545 437.550 5. 437.540 437.560

When the bird is coming toward you start at 1. and as the pass progresses move towards 5. You should be at 3. at max elevation.

Let me/us know if you have more questions.

73, John Brier KG4AKV

On Tue, Nov 8, 2016 at 5:03 PM, Les Rayburn les@highnoonfilm.com wrote:

Just purchased a used Kenwood TH-D72A HT. Hoping to use it along with an Arrow antenna to make more satellite contacts while traveling. While I primarily expect to use it to make voice contacts on the FM birds, I’m also interested in making packet contacts through the International Space Station.

Could someone point me towards a programming guide for this type of application? Any other pointers in using the radio to make packet QSOs through the ISS?

Grateful for all suggestions.

73,

Les Rayburn, N1LF 121 Mayfair Park Maylene, AL EM63nf

Member WTFDA, IRCA, NRC, ARLL, and AMSAT. Former CPC Chairman for NRC & IRCA.

Elad FDM-S2 SDR, AirSpy SDR, Quantum Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active Whip.

Grateful as always.

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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