Batboard

As I can see in .mdf file, M04GMC29C1__ radio is present there, but I never seen one offered for sale.

Right now, I'm looking for 5W (almost) continuous duty radio to operate in 433-434 MHz range (I'm in Russia and we have EU 70 cm band allocation here, 430-440 MHz, with 10W legal power limit). Was able to find a couple of range 1 40W GM300 radios with blown PAs and few 1-10W PA modules removed from range 3 radios (438-470). Now I'm in doubt, is it worth trying to modify split 3 PAs to operate on lower frequencies, or it is better to use it as is.

I can see Motorola part number of 10W 403-433 MHz PA module on repeater-builder, but this is only reference that i can google. GM300 service manual also contains only 25-40W PA module schematic for this range. Asked some local moto dealer techs - but nobody seen any range 1 radios other than 25-40W.

So, question... Does anyone seen any 1-10W GM300 radios for 403-433, or schematic of HLE8385A 403-433 MHz, 1-10 Watts UHF Power Amp?

I can try to move all matching components from first stages of blown 25-40 W PA to range 3 10W module I have and try to tune final stage by myself, but prefer to reproduce original HLE8385A if schematic is available.

Just took a look in some old Motorola sales brochures for GM300 and the similar 2 ch. M120 and there's no low power version shown for 403-433, 465-495 or 490-520. Only the 438-470 shows a 1-10W available.

The 1-10 watt PA for that range is HLE8385.
That model was available after Dec. 1993, so what you are looking for is in the GM300 manuals after that date.
Should be manual 6880902Z32-A, schematic on page 16, parts list on pages 11 and 12.
With just a very quick look there were around 20 parts that were different between the 403/433 and 438/470.
I don't have a way to scan the schematic, but since I found it in the paper manual, I think there is a pretty good chance someone will have it.

PETNRDX wrote:The 1-10 watt PA for that range is HLE8385.
That model was available after Dec. 1993, so what you are looking for is in the GM300 manuals after that date.
Should be manual 6880902Z32-A, schematic on page 16, parts list on pages 11 and 12.
With just a very quick look there were around 20 parts that were different between the 403/433 and 438/470.
I don't have a way to scan the schematic, but since I found it in the paper manual, I think there is a pretty good chance someone will have it.

Thank you very much for information. I already checked my paper copy, and it have the same part number, but looks like there was some service manual revision pages that I don't have. Will try to find another manuals around.