GR1225 Repeater Power Settings

[SpugEddy]

Hello all. I've searched through all of the prior postings and although
it's mentioned, my particular question is not answered.

Is there a way to set the output power settings on this unit?
I have the 25w - 45w unit. But nowhere in the software is
there a option to set the high and low power to a different wattage.
Is this something that needs to be edited with a hex editor?
Hidden menu in the RSS software? Can it even be done?

What I want to do is lower both the high and low power output.
I was thinking something like 10w low and 30w high.

Sorry..... GR1225 H5157B UHF
Software is: Radius 1225 HVN9054 version 4.0

 

[KG4INW]

IIRC, it's accomplished using the Service section of RSS while you have the radio connected to a service monitor or a good wattmeter and 50 Ω load. You can use sliders to adjust the low and high independently. It's been a while since I've tuned an R1225 but can look tomorrow at work to confirm.

 

[cmdrwill]

IIRC, it's accomplished using the Service section of RSS while you have the radio connected to a service monitor or a good wattmeter and 50 Ω load. You can use sliders to adjust the low and high independently.

The R1225 transmitter has limited power handeling and are not for long transmit cycles.The PA stage IS the same as a mobile..
They do burn up and turing 'down' the transmit below rated will over heat the PA, these are class C amplifiers.

And if you are familar with the Alingment and Calibration, you could use the RSS Service service menus.

 

[SpugEddy]

The R1225 transmitter has limited power handeling and are not for long transmit cycles.The PA stage IS the same as a mobile..
They do burn up and turing 'down' the transmit below rated will over heat the PA, these are class C amplifiers.

And if you are familar with the Alingment and Calibration, you could use the RSS Service service menus.

Well my intention was to lower the output so as to NOT overheat the PA.
As for the Service menu, I have the "Read Radio For Service" option
but since I don't understand it, I dare NOT change anything. I certainly
don't understand the difference between "fine" and "course" Tx power
adjustment.

 

[cmdrwill]

And most of us /\/\ guys wonder who wrote that software?
If you can just send the radio chassis only I can do the alignment.
There is also fix for the heatsink problem. Buy my lunch..

 

[SpugEddy]

Which "heat sink problem" are you referring to, Will?
The overheating from running lower power?

That just leads me to the next question.
Question the 2nd: Then maybe I should just run the system
on "Low Power"?

This repeater is a very local system that
will be used about 3 weeks out of the year when we go to
the mountains for vacations. It's only purpose will be to keep
everybody in contact with each other and back to the cabin.
I said, "if I can get 1/2 to 1 mile distance, I will be very satisfied"
Well, initial tests show that I can open the machine with a CCR
handheld from 3 miles (as the crow files) (Far beyond my initial expectations)
So, I would be OK with just running it at low power. Yes? No?

 

[cmdrwill]

So, I would be OK with just running it at low power. Yes? No?

Without testing the radio first no. I have offered to do the alignment and calibration for next to nothing so you will not have to worry.

 

[SpugEddy]

Understood. Vacation #1 coming this weekend.
Vacation #2 coming 2 weeks after. Both are extremely
light use on the system. Vacation #3 comes at the beginning
of August which is the heaviest use. I will try to get it out
to you between Vacations 2 and 3