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VX-8GR out of band mod and mystery switch.

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  #1  
Old 12-16-2010, 05:02 PM
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Default VX-8GR out of band mod and mystery switch.


I just got a VX-8GR and thought I would post a picture of what you will find when you pull the sticker off the hole in the battery bay.



The little black zero ohm resistor on the right is to be removed to perform the out of band mod. Once you remove it your radio will reset the next time you power it up so back up your memory.

I use the FTBVX8G software. Pre mod mine showed up as a USA2 after the mod it showed up as a USA3.

As can be seen on the left there is a small switch which I am calling the "mystery switch". I played with it before and after doing the out of band mod and noticed no difference. It came switched to the right. When I switch it to the left the radio does nothing. It will not power up or recognize that the power cord is plugged in. With the battery removed if I switch it to the right, plug in the power supply, power on the radio and then switch it the radio will be on but frozen. No buttons will respond and it will not tx/rx. Sometimes it would reset it's self after a few seconds to minutes and be operational with the switch to the left, I did not notice any change in operation other than when the power cord is removed and then reinserted or the battery is installed it will no longer power up or do anything. If I remove all power switch it back to the right (default setting) and re apply power then it seems to be back to normal.

Any ideas what it may be used for? My thoughts are perhaps putting it into mode for firmware upgrade over the serial port?


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Old 12-16-2010, 07:42 PM
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On the 350r there's a switch inside and behaves as you described and its used for firmware updates.
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Old 12-16-2010, 08:12 PM
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O good that is what I was hoping to hear. There is a lot to like about this radio and also a lot to hate which could almost all be fixed in firmware. I have a dream that one day they release a very useful user installed update.

I am going to start compiling my wish list, now how to bend the ear of someone at Yaesu who can actually make things like this happen?

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Old 12-17-2010, 09:52 AM
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My radio did come with a spare back cover sticker in the box. I mangled mine fairly bad when I pulled it off, It would not have been water resistant if I had tried to put the old one back on. This tells me that they did plan on users having to remove and replace this sticker. Perhaps this is a good sign for firmware updates.

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Old 07-24-2011, 12:36 PM
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With this mod can radio do 220

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Old 09-08-2011, 03:41 PM
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Quote:
Originally Posted by jeepjw View Post
With this mod can radio do 220
Anyone?
What can I gain?

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Old 11-05-2011, 01:19 AM
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is it possible to RX below 108 mhz? I have VX-8GR, I'm wondering if there's a mod to do that if it's not blocked in hardware. thanks.

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Old 12-17-2011, 05:33 AM
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Quote:
Originally Posted by jeepjw View Post
With this mod can radio do 220
hello, did this mod tx in 220 Mhz? VX-8GR ??

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