Batboard

Hope you all had a good weekend.
I just bought an HT600, and I should have tested it before I bought it (had no battery with it). When I got home and tried it, I found it emits a tone when turned on, no change when the monitor button is pushed. Only stops the tone when transmitting (which seems to be ok, but I have not checked the freq.) Anyone know about this beep? Thanks!

Sounds like a screwed codeplug. It's an always on tone after the power up beep right?

If you have a RIB and RSS it's a simple fix. Pull the thing apart, take out the two small bottom front screws and the two rear screws and remove the front cover and unplug the speaker/mic connection. Then remove the one small screw in the shield, most times i can get that shield off without sliding the radio out of the case, but if you can't just slide it out.

Then, unplug the two small white plugs at the bottom front, and also read the bandsplit printed underneath them just in case someone tried changing the bandsplit.

Connect and power up the radio and run the RSS, try reading the radio and if it works then check the bandsplit setting. Program the radio, turn everything off and plug those two white plugs back on and try powering up the radio again.

The reason this works is that having them unplugged keeps the radio from verifying the VCO while you make the changes.

Thanks very much for the info. No, I don't have a RIB or the RSS yet, this is the first of the programmable Motorola HT's I've owned. And yes, it's on constantly just after turn-on. I was thinking it was indicating an out of lock condition, or something like that, but I'm new to these radios, just upgrading from crystal control (I'm slow, I know):). Fortunately, the radio had not been apart until I pulled it apart last night, the rubber seals were clean on the inside, and the screws were tight. I even had to break through a long accumulated crud layer to get the case apart, so I'm certain the radio has not been apart since new. I was impressed at the ease of disassembly, reminds me of the Minitor I pager. I didn't know where to confirm the bandsplit, so I'll check it tonight. I'll look for the RIB and software, and will let you know how it goes. Thanks again, I really appreciate your help.
Tom

Someone may have tried to put a codeplug from the WRONG bandsplit in it....
You need rss, change bandsplit to the correct one...
....just a thought....

The bandsplit is printed on the radios internals underneath the two small white plugs on the bottom front that you need to unplug. You have to remove the shield and that one small screw to see those plugs.

It is an out of lock error, or otherwise just corrupt codeplug that causes it. The most common problem is when someone tries to changes the bandsplit to something it isn't capable of.

I remember when i made the move to programmable from crystal, as it was only about a year ago, lol!

Max-trac wrote:Someone may have tried to put a codeplug from the WRONG bandsplit in it....
You need rss, change bandsplit to the correct one...
....just a thought....

Which is a common way for HT600's to be demil'd before being sold as surplus.

KG6EAQ wrote:

Max-trac wrote:Someone may have tried to put a codeplug from the WRONG bandsplit in it....
You need rss, change bandsplit to the correct one...
....just a thought....

Which is a common way for HT600's to be demil'd before being sold as surplus.

Ain't that the truth. There has been a fair amount of HT600's sold on eBay with a corrupt codeplug. I have fixed eight of said units that local hams bought and later brought to me for programming and repair.

I think its just the quickest and easiest way for them to "kill" the radio to protect the information that it contained.

Sure sounds like a HOSED codeplug to me as well!

To verify the bandsplit, remove the front cover by taking out the two rear screws, and two on the lower front of the case above the battery slide, pull straight out and unplug the connector for the speaker/mic.

Remove the radio by unscrewing the two larger screws on the battery plate and pull up, then remove the screw on the front shield.
Unscrew four(4) tiny phillitps screws on the synthesizer(two on each side), and GENTLY slide off the four connectors on this module, there are two on the upper left, stacked on top of each other, them two on the lower center, side by side(these will reveal the bandsplit once the connectors have been removed.
Usually printed in red or something close to that color, but under the gold pins of the VCO module.

Verify the bandsplit, reassemble, reprogram radio with the proper frequencies and go into the service menu and properly align the radio.

ALWAYS SAVE the ORIGINAL codeplug!!!!

Good luck getting your radio up and running smoothly!

73!

AEC wrote: Unscrew four(4) tiny phillitps screws on the synthesizer(two on each side), and GENTLY slide off the four connectors on this module, there are two on the upper left, stacked on top of each other, them two on the lower center, side by side(these will reveal the bandsplit once the connectors have been removed.
Usually printed in red or something close to that color, but under the gold pins of the VCO module.

Umm, which radio you referrring to? Cause an HT600 sure ain't got all that.

All you have to do is remove the shield, one screw, and unplug the two white plugs going into the front of the module and the bandplit is printed under them.

No four screws or four plugs here!

Sure they do, that pot metal casting holding the synth. has two on each side, and two plugs on the lower end with two stacked ones on the upper left for the control flex/top plate, but yes, one screw in the shield for removal.
If you remove the synth. you have to remove those 4 screws, it doesn't fold out from the case.
Maybe it's the translation from my look at things to yours, but I've serviced close to 300 of these over the years, and there's been little difference between genesis radios, P200s included.

If I need to remove the synth., I have to unscrew 4 screws to do it, and also unplug the VCO and flex for the top controls.
Oh, and I forgot to mention the ribbon flex under the synth. module as well(IF).

Ok, you were talking about removing the entire unit. But, my point was, you don't need to remove it to check the bandsplit on the VCO or to fix a botched codeplug.

All you have to do is unplug the two bottom plugs and there it is printed under those connectors.

No need to remove the controller unless there is something wrong with it.

And if you find you have a gov't surplus radio with a 157-174 bandsplit, there's not much you can do with it unless you're a boater, are with a dept that has one of the new 160+ frequencies, or you wanted a parts radio.

Good luck.

wa2zdy wrote:And if you find you have a gov't surplus radio with a 157-174 bandsplit, there's not much you can do with it unless you're a boater, are with a dept that has one of the new 160+ frequencies, or you wanted a parts radio.

Good luck.

They do make good parts radios. I was using two of them for nothing more than NOAA weather radio monitors. That split is just useless.

I got mine down to 154 so I set a few up with MURS and turned down the RF to 2 watts.

I had a couple that went down to 154 "ok", and one that would program and lock there but was nearly deaf at 154.

I buy the high split units when they are cheap and have a decent case and knobs for spare parts mostly.

Don't mean to dig up old posts, but I am having the same problem with one of my beater HT600s. I leave it in the truck in a convertacom to one of the state police frequencies (ISPERN for those in IL). One day, it started doing the beeping thing. Just a heads up in case this happens to someone else.

In the years the HT600/P200's have been arround I have had a few seem to loose their code plug for no know reason. We had asumed it may have been static on the OPS CONnector pins. Most had the OPS CON cover missing. Put the code plug back in from the archive file and they worked.