I have built my self a RIB using the instructions found on batlabs. Yes, I know it is better to use original motorola stuff but what's the fun in that :-)

Before I try to program my radio I would like to verify that the RIB okey, I don't want to damage another radio... Is there some simple ...

Hi again

I have a HT750 that I might have fried using a "RIB-less" cable. A friend of mine will try to restore the radio. He's afraid that my damaged radio could destroy his RIB.

Is that possible, given that there isn't any abnormal voltages on the TX,RX lines from the radio?

/Martin

I'm sorry if my questions are stupid... I'm new to this ;-)

When powered up I hear a high pitch tone and the LED is green for a second or two. Everything okey...

When releasing the PTT I hear two low pitch tones. This is repeated a couple of times before the radio is quiet again. Also the LED is ...

Or maby the CPU is damaged

When I release the PTT there is some kind of low freq. tone [beep beep] and it occurs a couple of times.

Maby it is time to buy a new radio...

There is only a low voltage (~1 V) between pin 3 and 7. I guess that I haven't damaged the CPU because the radio is still working as expected.

I guess that I could still program the radio if I use a ordinary RIB with It's own power supply?

Ok, thanks. I will look in to getting some real equipment.

But the questiohn still remain, how do I know if something have been damaged?

No point in getting expensive programming equipment if the radio is allrady dead.

Hi

I tried to program my HT750 with a home made RIB-Less programming cable (without using the Boot Ctrl signal). It didn't work at all and I read a couple of posts on this forum an I realised that I still need a RIB. Not using a RIB could damage the radio?

The radio still appear to work as before ...

Does anyone have som info for me? Maby you could tell me about the cells in the battery pack, how many and the voltages.

There are several charge control chips on the market, i'm thinking of building my own very cheap charger...

Hi

Is there an extremely cheap way to charge GP340 batteries? I don't have a charger and my budget is 0 $. Is it possible to slow charge them with a simple power supply unit? What voltage and current should I then use?

/Martin

I'm looking for a portable Motorola radio with the following specs:

403-430 MHz
At least 16 channels
Scan capability on at least 16 channels
CCIR 5-tone Selective
Rugged design

Please give me some suggestions so I now what to look for!

/Martin

Hi,

I have just bought a pair of HT-800 UHF, 16 channel version. Does anyone have any additional information about them? Is it true that only 8 channels could be scanned?

Best Regards

Martin