Batboard

Hello I have just purchased a Moto suitcase repater the model number is: P43SXS3180BT . It is in the 165 Freq area now. According to the service manual is is capable of working in ham bands. Would like it for emergency use or special events. Does anyone know anything about these. I can provide pictures. Programming seems to be a little complex and needs an old Moto suitcase programmer.

I can send out pictures. unit was manaufactured in 1987.

Thanks in advance.

N8MDH

My two bits worth:
I think that this is a MX300 in a box.
If this is the case you could find an old MX in the VHF low split, and swap the modules.

I have worked on these that use channel elements.
Never worked on a synthesized model.
There were many varients do to the many "SP" requests from the field.
There are jumpers on the main board to set up the filter relays, if so equipped.

i have one that is a uhf , it looks nothing like any mx inerds i have seen .

from guess who........

If you plan to use it on the 2 meters with the standard 600khz split, you will have to consider how to achieve isolation between tx and rx. Most small duplexers for vhf are made for 5mhz+ frequency spacing. You can do it by separating antennas but they will probably have to be spaced a considerable distance from each other.

Hello Andy,

The Portablr Suitcase Repeater Model breakdown:

P = Portable
4 = 30 to 40 Watts
3 = VHF Mitrek Mobile RF Power Amplifier
S
X = 12Kb Securenet DVP Wideband Analog RCVR Clear or Coded
S
3 = Tone PL
1
8 = Eight Frequencies Repeat and/or Simplex Operation
0
B = 2nd Version (Engineering Improvement) in the unit
T = Repeater

If it's on 165 MHz and you want to move the frequency down roughly 20 MHz, you better open that box up and look for the MX Channel Elements or if the individual XMTR and RCVR are synthesized version MX300S. you are also looking for individual RF modules in each MX XMTR & RCVR which will indicate the basic frequency range. I never spent any time working on a MX300S unit but I can bet they have RF ranges on those too. I can almost bet that the mobile Mitrek RF Power Amplifier covers 146 -174 MHz so moving the frequency down another 1 MHz shouldn't be a problem.

Since you want to put this on the Amateur Radio Bands ... the internal duplexers will not provide enough isolation. The original VHF (SP'd IMTS) duplexers could only support a 1.6 MHz frequency separation Tx to Rx ...... I use to tune those duplexers. The first word that come to mind is !*%$#@! Oh, they were a pain in the lower posterior to tune!

I'm not sure when the Product Group switched to Cellwave mobile duplexers but they still wouldn't provide enough isolation when you're considering a 600 KHz Tx to Rx separation. You'll need a minimum of -70 dBm for each notch to work correctly and the farther down the better. I wouldn't doubt that you'll need to modify the case in some form for individual RF connectors for a better duplxer or separate antennas.

These Portable Repeater packages were housed in Black Zero Aluminum Cases ... I think they operated off of 120/240 VAC, External +13.8 VDC or Internal +8 VDC Batteries (Low power mode). This product has a separate + 12 VDC @ 60 Amp Hour Portable (It weighted 58 Lbs!) Battery Pack separate of the Suitcase Repeater (I think that weighted 25 to 30 Lbs by itself). The Instruction Manuals you would be looking for, are # 68-81021C90-A & # 68-81021C95-O. I'm not sure that they still available through AAD (Ex-NPD) 1-800-422-4210 but contact /\/\.

Neat Product!

Dan

I have a 2 questions about the Motorola portable repeater radio P43SXS3180BT:

1) the internal battery is a 8 volt battery. Does anyone know if this can be substituted by a 12volt or a 6 volt battery.

2) the radio have a code inserter plug. what kind of plug an code inserter will be needed to program the radio?
will the motorola 3011cx be able to program it ?

rogerpettersen wrote:I have a 2 questions about the Motorola portable repeater radio P43SXS3180BT:

1) the internal battery is a 8 volt battery. Does anyone know if this can be substituted by a 12volt or a 6 volt battery.

The radios and interface run off 7.5 volts and the battery supplies the 7.5 volts without having a regulator stage.

The 8volt battery was an SP just for Motorola, I have never found one. I wouldn't use a 12volt, you might fry the PA on the MX module. The keyloader cable is the same that was used for Micor mobiles, I don't have the part number handy right now. A CX keyloader should work, as long as the module is the same ie. DES or DVP, 50/50 chance it will work with a DES-XL, DVP-XL. Some XL keyloaders won't load non XL modules, some will.

I replaced the bad ones in my suitcase repeater with these:

http://www.amazon.com/Powersonic-PS-832 ... B0002ILK4U

Should work fine but might have do some padding to secure it well in there.

So I bought one of these on ebay, and was really hoping to use this for 70cm Amatuer, and for our Fire Department here in Afghanistan.

Looks pretty solid, doesn't appear to be coming with the above mentioned battery pack or power supply, I can work that out.

The model number I got is : XP44SXS3180BT

Looks like it will do clear and digital. Anyone have any idea how to get it programmed correctly? I'll re-read the thread again to see if I missed anything, but it looks like it came with all the required cables and plugs, probably just need the software.

Can anyone help me out?

Thanks!