Batboard

OK i was able to get a code plug and get it into the radio. Now my next question would be(and it's probably been beaten to death) how do i go about taking this radio from 800 MHz trunking to 800 MHz conventional? The model Number on the radio is :D35MWA5GB7AK the number on the logic board is HLN9313A. Now this radio is Strictly for RECEIVE only there will be no transmit at all on this radio as i will be removing the output transistor from it and disabling the transmit wires at the Mic socket. If any other information is needed on this radio please just ask. Any assistance is appreciated.

Thank you
Jason

That radio should do 10 channels conventional right now, if I'm not mistaken, but if it's going to be conventional only, just change the firmware to 5.34 (conventional PROM) and blank and reinitialize it as a 32 channel high signal. Then, you don't have to do anything other than leave the tx blank in the RSS.

Right now the radio is trunking. I would like to convert it to strictly conventional. There are 2 conventional channels on it, which i did program but it will not receive anything on those channels as there is always a trunking system programmed on it that i cannot get rid of. I'm presuming that the trunking is taking over or taking priority. I figure that if i were able to convert this radio to strictly conventional then i wouldn't or shouldn't have that problem.

you say to change the firmware to 5.34? you mean the programming or the codeplug? i'm not familiar with the firmware. I'm assuming that is something that can be done with the maxlab rss? If not then could someone enlighten me please?

i know i'm a noob with these questions, but i guess better to ask then to be a complete idiot and brick a radio

Thank you
Jason

The radio should be able to have 10 conventional frequencies programmed as it is right now. Trunking will not affect those 10 channels. If you have it parked on a conventional channel and it will not receive, then there are bigger problems.

As far as changing the firmware, you have to have a 5.34 PROM. You have to unplug the trunking PROM from the board and plug in the 5.34 PROM. I say PROM, because I can't remember if they are EPROMs or not. Either way, you have to blank the board and initialize it as a conventional radio and then align the radio.

You may have a hard time locating a 5.34 PROM unless someone has one just laying around that they aren't using.

It is much easier just to use the radio as is and just blank out the trunking info and set all of the conventional channels to RX only.

Hello:
The maxtrac 840 mobile you have as it is will not allow you to erase wipe out the one trunking personality because one always has to remain.
Just way the radio is designed.
You can however program in invalid info to disable that one remaining trunk freq.
So as an example trunk ch 1A will show up then assuming you have conventional freqs programmed it will show 1 through 10 as conventionals.
As rescue161 stated you could remove the 28 pin prom and put in the 5.34 28 pin prom that is conventional and not trunking.
Make sure you look closely at the 28 pin prom and notice one end of the prom has a u shaped depression or notch that you put the new prom in the same way otherwise its installed upside down and you will have a migraine headache wondering what the craps going on.
Also stated was it could be a prom or eprom and wasnt sure on.
But from factory they were normaly proms but anyone could burn the program onto an eprom which has been done so its possible it could be eigther one.
Your model number that you gave should be prom version V54.03 which may even have motorolas part number hln9435c on it which is for the model number you provided and its a trunking 10/10/10 radio.
The 32 or even 16 conventional (no trunking radio could be eigther depending on how you reiniate the radio ) uses a 28 pin prom version V5.34 or motorola part number hln5569a .
But as rescue161 stated you can program 10 conventional and forget the trunk ch and should work as is with 10 conv chanels.
If you want you can blank the maxtrac 840 trunk and conv radio and put the 5.34 prom in but you will now need to align the transmitter and recieve on freq and realign the transmitters output and enter the reference crystals numerical tuning data and enter the voltage from pin one of the logic bds conector which runs around 9,6 volts dc as an example.
So youd need a service monitor and watt meter and a digital volt meter as a minimum to do this besides an older dos computer and of course maxtrac lab and the normal maxtrac rss to reinitiate the logic bd with the conventional model number and not your maxtracs 840 model number you have now.
Also if you do decide to blank and put in 5.34 prom the model number for the 32ch conventional for your 15 watt 800 meg pa output is D35MJA75A6AK
Also during reinitiation the program will ask you to select the proper front panel code and for your 32 ch conventional it will be 001
So you use maxtrac lab to blank but use normal maxtrac rss to reintiate as conventional.
Be aware that trunking maxtracs use the maxtracs rss and that the conventional maxtrac uses maxtrac rss .
So you cant read a trunk maxtrac with normal conv maxtrac rss if you try you should get error 21 i think it is and say model not supported .
Id make sure i read the radio and save the radios code plug so that you could put it back in with the trunking prom v54.03 just in case you messed up and wanted to put radio back to original as trunk/conv.
Also during blanking i hear theres a blank but save tuning data and if so then you saved yourself a lot of trouble since your staying with the same freq band spread.
This should save all the important info youd have to put back in otherwise by hand and might be best for you if you tried it and wasnt familiar with doing this procedure.
If you havent done this before then id say its usualy some what confusing the first few you do but then after doing it youll find it not so big of a deal.
Thats assuming you already have an understanding of wattage output / deviation settings ect.
But if the radios not a big loss to you as in a learning process by all means have at it.
You will need the v5.34 prom and the rest of the radio could be used as is if no problems exist with it now and it operates corectly.
Satelite

If it hasn't been blanked before, you should be able to save the tuning data that is in the radio right now before you start changing things. If it was blanked before and the tuning data was not recorded, then that may be why it's not working now, and as Satelite said, you will have to retune the radio.

Hello
I missed an important piece of info you posted at the beginning and need to give you an update on it.
You stated you got another code plug for the radio and got it put into your maxtrac.
Ok somebody corect me here but i believe he just now entered a code plug that has tuning info wattage settings deviation settings dc steering voltage ect that wil not match his mobiles ref oscilator crystal or rf bd ect thus rendering the radio operating at out of tolerance and probably wouldnt recieve an on freq chanel properly if at all.
Can somebody confirm this ?
Im thinking it would now also should a diferent serial number not matching the radios tag but that wouldnt be an issue as far as im concerned.
Ive alway retuned the radio and entered the same serial number when i did them in the past.
So did he change the tuning info with the diferent code plug as far as radios proper settings.
Not refering to the freqs programmed in the radio but its actual operating tune info for rf oscilator crystal and rf bd and dc sterring voltage ect ?
Satelite

Ok thank you for your replies. I had set the radio on a shelf for a while but have now decided to have a go at it again. The radio itself all it does is emit 1 long continuous tone. When i turn on the power switch it will emit 1 quick tone then a continuous different tone. This is all the radio has done since i had got it. So i'm assuming that the radio had been blanked and the logic board has been wiped as well. Am i correct in assuming this? What would i have to do to get this radio receiving again. I just want to strictly use it as a receiver only. Thank you.

Just to refresh as well the numbers on the radio are as follows.
The number on the chip is HLN9435C
The number on the logic board is HLN9313A
the number on the RF board is HLF9122A
and the Model number on the radio is D35MWA5GB7AK

I'm just trying to get this radio back to being able to at least receive.
Thank You

Hello:
Been 2 years since u started this and from your past postings you stated you got a code plug and put it into the maxtrac 840 which is a 800 MHz 10/10/10 radio.
Now you get the fail pass constant error tone upon powering up.
The eprom HLN9435C is the trunking version V54.03 which would be the prom for a privacy plus trunked maxtrac.
Ok the error tone could be you blanked and didn't reinitiate but if that's the case the front display should be dead and unresponsive to buttons and you might have a hash mark on the display otherwise dead.
Or you dropped in the wrong code plug and it corrupted the radios code plug which with the maxtrac series is an easy recovery as for fix if you have the correct code plug and program to do it.
Or you blanked reinitiated for the conventional only mobile and left the trunking prom in which would now need to have the conventional 5.34 prom which would allow you to reinitiate as a 32 channel 800 conventional with priority scan functions.
So think back and tell us what you did or think you did ?
That will save us time getting you to where you want it to be.
Do you have an archived code plug for the D35MWA5GB7AK maxtrac ?
Might be just as easy to go ahead with the conversion to 32 ch conv if you still want because its now looking like your going to need to possibly reinitiate and set tuning parimeters if you blanked it or over rode the correct code plug with the wrong code plug as this normaly messes up tuning as the radios code plug contained its bd setting also.
But if you do have the original radios code plug it had originaly then youd be set to recover radio.
So the code plug listed above if you have it = Is it the radios actual code plug or from another radio same model number you have ?
Lets see if we can find the corect option first to recover before we do a blank recovery as im thinkin your possibly not understanding just how to do so far.
But if its blank and reintiate I can email you the sheet on hows its done and quide you thru it if you have the needed equipment to get it done with help.
You will need a service monitor a watt meter and a dc volt meter as a minimum to do a blank and reinitiate if you didn't save tuning values before you blanked if in fact you did blank mobile.
I have the ability to read and duplicate the proms ect so I can duplicate a working 5.34 conventional prom for the maxtrac mobile using a 27C256 chip.
Depending on how bad you want this done you might even consider just mailing it here and ill do it and return it to you converted 32ch conventional or recovered as a trunking privacy plus trunker 10/10/10 as it originaly was for a reasonable fee to cover the 5.34 prom and return postage.
So what info do you have to add to help quide you in the right direction ?
Satelite