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Kenwood TH-D72 Extended TX mod

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  #9  
Old 12-20-2010, 08:04 PM
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I saw that also. I did some (brief) playing around with that, but I couldn't find a combination that was useful, although I've already done the mod listed here which came from directly from Kenwood. Messing around with those one of the two diodes in the U.S. version did change things for me, but not for the better. In fact it limited the TX and RX range even greater. I decided to stop playing with it for now because the diodes are soooo small, it is very difficult to replace them even with a very fine point soldering tip.

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  #10  
Old 12-20-2010, 08:54 PM
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Well, I just got an email from HRO that my D72 gets delivered tomorrow. I wonder how long I can keep my soldering iron out of it?

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  #11  
Old 12-21-2010, 06:03 PM
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Quote:
Originally Posted by Moleculo View Post
I saw that also. I did some (brief) playing around with that, but I couldn't find a combination that was useful, although I've already done the mod listed here which came from directly from Kenwood. Messing around with those one of the two diodes in the U.S. version did change things for me, but not for the better. In fact it limited the TX and RX range even greater. I decided to stop playing with it for now because the diodes are soooo small, it is very difficult to replace them even with a very fine point soldering tip.
put the diode on just #2, removed from 1 and 3, and it becomes a Type=E radio.
you will lose the Weather band option though

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  #12  
Old 12-24-2010, 03:14 PM
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So I opened my new TH-D72A today. It was home for 2 days before I opened it. I must be getting old.

I looked at the 3 diodes in question and see that the A version has #2 missing.

Has anyone played with removing 1 or 3 and if so can you tell us your result?

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  #13  
Old 02-28-2011, 03:14 PM
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Thumbs up OFFICIAL "BEYOND MARS Modification" FOR TH-D72A

This is the official Kenwood Mod for A (USA) model, I tested it and worked perfectly:

SAVE YOUR RADIO MEMORIES FIRST!

1. Remove diode D730 (labeled 1) (near the speaker ribbon cable)

This is how the 3 diodes should be after mod:

1 - removed
2 - removed (USA version does not have it)
3 - must remain in itīs place (that means DO NOT remove it!)

2. Remove diode D729 (On the lower part of the keypad board)



3. FULL RESET the RADIO
MENU>RADIO>AUXILIARY>RESET>FULL RESET


NEW TX RANGE:

136-173.995 MHZ
410-469.975 MHZ


PROCEED WITH CAUTION! I WILL NOT BE HELD RESPONSIBLE FOR ANY DAMAGE TO YOUR RADIO, ITīs UNDER YOUR OWN RISK!.

Remember that it is ilegal to operate the radio outside the limits of your class license or permit.

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  #14  
Old 02-28-2011, 05:05 PM
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Any brave souls try this yet?

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  #15  
Old 02-28-2011, 05:28 PM
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I try it, it worked perfectly, itīs from the original Kenwood document, and for the A model.

I am really happy that now the TX of my radio is expanded.

Please send me a private msg to send you the original PDF document.

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  #16  
Old 02-28-2011, 06:33 PM
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Quote:
I try it, it worked perfectly, itīs from the original Kenwood document, and for the A model.
That means that they've updated the document from what I posted, because mine came from them also, and didn't mention removing D730 (1).

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