Batboard

Thanks. I have ordered a couple from Wiscomm.

OK, my googlefu most not be working (or I've been awake too long), but I've got nothin'.

I have a CDM1250 with the RLN4802 remote head kit... but I don't have the control head bracket to mount the head...
Checking ebay wasn't real helpful, as I don't have a part number. I found several people ...

Here's one I've never come across before...
We are going through our old HT1000 and MT2000 radios, checking them out before getting rid of them (the good ones go to auction, the bad ones get stripped of usable parts and the good parts to auction, the bad parts to the shredder)

I've come across a ...

That's definitely it... If I knock on the front of the radio during TX or RX (even with a speaker mic) I can hear the microphonics...
Just ordered a new radio on Ebay, as my vision isn't good enough to do the repair myself (and I really don't want to spend a bunch of money on a kit, then screw up ...

Never had this one before... I have a UHF MT2000 (my only one... all my other MT2000's are VHF) that has a scratchy PTT button (really bad scratchiness when holding PTT, bad enough that it screws with the DTMF decoder on my repeater).

I can't find the PTT switch assembly in the parts list in the ...

We were discussing this yesterday while rekeying our APX radios (the keyloader is in the safe with our original RSS disks, licenses, books, etc.) M should make the RSS packages for older, non-narrowband radios available to someone like the ARRL so us hams could legally obtain it. Speaking for myself ...

OK, I got the operators manual and service manuals for the B1666 / B1667A from ebay.

Here is basic hookup information.
The 25pin connector, looking at the back of the console, is numbered like this:
13-----------1
25-----------14

Needed pins are:
1: Ground
2: Audio In
4: PTT
17: Audio out

As far ...

Does anyone have a manual (or at least hookup and basic function info) for a B1667A MDC unit?

I was just given one with a bunch of other radio stuff... I got the power supply, but no other cables, and no documentation at all.

My guess would be backlight power on the LCD board has a bad solder joint. I don't know if the EX600's have LED or EL backlights, but probably LED. Check the LCD board for bad solder joints or maybe a chip resister that has fallen off the board from flexing.

I don't have the part# if you need to ...

Jim202 wrote: Kind of surprised that it hasn't been flagged by the UL boys as a personal safety issue and a fire hazard.

My guess would be the UL has the same dim bulb engineers on their staff...

Will,
Can you post a link (or instructions) for this squelch mod? I have another (VHF) maxtrac with the same issue...
TNX
W0VHA

Does anyone happen to have a schematic for an M03 alert monitor (VHF High)?

I just picked one up on Ebay for $15 on our FD's frequency, and am going to add tone decoding to it (this radio doesn't have it built in)

I have the PL decoder, DTMF decoder, and reset circuit, but would love to know where ...

The one with no TX audio: Check the small ribbon between the bottom of the front panel and the main PCB (make sure it's connected, remove it and clean the pins, etc)

I have had one that liked to work loose over time...

Will wrote:
vhacmowilmob wrote: Maybe I just have a slow radio...
You need to do a mod to get faster un-mute. Are you into removing and replacing two small parts in your Maxtrac?

If they're not SMT, I can do it... (my vision isn't good enough to play with SMT parts, even with the CCTV camera)

Checked out the radio this morning...
VCOs are both right where they should be, and I cleaned all connectors, including the interboard one.
Oscillator reference has been adjusted to within 20hz.
Squelch is set properly. Squelch opens at ~0.2uV, but takes its time doing it.

Maybe I just have a slow ...

I checked the squelch, and it's set properly. I'll take the radio in to work tonight and check the VCO (and clean the pins) and see what happens.

I just got another Maxtrac 300 UHF (449-470). I have about 10 of these in service as echolink/IRLP links around the state, and this is the first one that's given me this issue...

(It's not interfaced yet, so it shouldn't be a problem, as I take unsquelched audio from the interface connector, but ...

I have a UHF systems saber that got dropped (which is why they gave it to me)

Everything works fine except the LCD:

http://www.wilmotnet.com/TGG/syssaber.JPG

Does anyone know of a way to fix this thing, or am I going to have to replace the whole front shield (does anyone have a front shield for ...

OK, I injected a tone into the repeater receiver and looked at the transmitter output with the SM. I was getting 4.92khz of deviation with a 0db tone. I turned down the volume on the controller (just a simple trimmer) until I got 2.48khz. Everything seems to be working fine, and I didn't notice ...

First thing I'm going to try is turning down the volume on the repeater controller... should have the same result without dicking with deviation on the radio itself...

I don't have CPS for the BPR's, as they are not my normal radio, and we only have 4 of them... not worth spending $300 when we don't change their programming (unless they don't work...:-) )

I'm going to try a few things (soft speech, etc.) on Monday morning, and hope the radio I sent off to be ...

I think I'll drop the deviation on the repeater's transmitter, as I can do that easier than screwing with the deviation on 8 sabers and 2 desktracs...

I'll take it in to the hospital where I have an R2600 and adjust it.

We have a problem with our BPR40's at my apartment building. They stutter when one of us with a saber/maxtrac/desktrac is transmitting through the repeater, but they are OK talking to each other through the repeater.

We just got rid of our ancient Standard RP70U, and I built a repeater out of a ...

Most repeaters will not pass a tone, as there is a high-pass filter in the repeater receiver that strips the tone off before passing the audio on to the controller.

OK, we found the pot, but we can't find a screwdriver that's small enough to fit it (I'll have to bring one from my own precision collection, I guess)

The repeater is an ancient Standard RP70U. It's supposed to transmit PL, but it doesn't, and I can't figure out why... I imagine the tone board is ...

Weird...
Almost sounds like the VCO isn't locking up on teh repeater input, but is OK on the output.

What is the frequency range / spread? (ex. 463/468) VCO unlock is more likely on UHF where the repeater inputs are (typ.) 5MHz up, vs. <2Mhz on VHF.

Does anyone know if there is a way to adjust the squelch on a BPR40 without CPS? We have 4 of them, and get some interference from our cable system when we're in the shop (cable distribution is on the other side of the wall).

I have a couple of Sabers, and am able to squelch out the interference ...

Yup, would have to guess that what you have there is a high-split saber (or at least one module is high-split (162-174). It sounds like the VCO is out of lock.

Also, make sure since it's a secure-capable radio that you have clear voice enable turned on in the RSS, or it won't work without an ...

To resurrect this thread, we just got the 2600 back from Motorola. They installed a new battery, new mic jack (the old one was wonky) and calibrated it. It cost about $1200 and took two weeks. Not too shabby in my opinion... and I can use the SA without waiting for 1000 years for it to boot!

The deviation controls are softpots in the service menu of the RSS.

These radios (Radius and Maxtrac) are easy to tune up if you have the right equipment.

Assuming these radios are maxtracs with the RICK-type cable between them, check the IGN CTL jumper on the logic board (If I recall correctly, it's usually a 0-ohm resister near the speaker connection) If this burns out, the radio won't power up without +12v on one of the ACC pins (I don't remember ...

We figured it out (by accident)
If the radio is programmed as a secure radio, it won't allow post MDC. We created a new codeplug for one, and forgot to set it as "secure" (we only have the bypass modules). When we went to set MDC, it asked us if we wanted pre or post.

Mystery solved. If you want ...

I have RSS 7.0.01, and the only radios that have ever asked pre,post, or both were saber I's. I've never had a saber II or III ask me. It's always been pre.

All sabers that we have are CORE 5D's.

Does anyone know if there is any way to make the saber II radios do MDC ID post-transmission, rather than pre? (like one of the saber I's that I have...)

I prefer Pre-ID myself, but the people using these radios (apartment complex) don't like having to wait until the tone is done... (sigh)

I told ...

Make sure you have the option "Clear voice slaved to a mode" selected, and I would also select "Delete secure/clear switch". I don't have the option numbers in front of me, but that might do it.

Brad
W0VHA

How much power are you using on your APRS rig? We have ours set at 10 watts, and don't usually have problems with a digi hearing us anywwhere around, and we don't usually have desense problems (I notice some desense on the scanner, but that's to be expected)

Brad
W0VHA

I second following the batlabs procedure to purposfully corrupt the codeplug (turn off the radio while writing it, after two or three dots (you have to be quick), then create an 8k codeplug for the correct model from scratch and write it to the radio. I had one that someone had done that to, and ...

We have an R2600 here at the hospital where I work. It seems to have issues...

When we first turn it on, it goes through this ungodly long calibration routine. It literally takes almost 10 minutes before it can be used. Also, it doesn't appear to want to save any settings.

Robert hasn't found the ...

I have finally been able to get logged back in (I'm blind, so I have to have help with the captchas)

We replaced the switch with one from a donor radio off Ebay, and it works now.

Thanks for the help, all.

I'll check it out. It's not that big of a deal, as this radio is a loaner for our apartment complex maintainence people, and they only have two channels, but it was a failure I hadn't seen before.

I have a Saber 1 UHF (458-490MHz split) that seems to have issues with the channel selector switch. RSS reads it OK, and the model numbers match, but this is what happens:

Program 12 channels in via RSS. Channels 1-8 work OK. Put the channel selector on channel 9, and the radio acts like it's on ...

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