TX power settings : XTS3000

bhaguan · Post by **bhaguan** » Wed Feb 18, 2004 1:33 pm

Does anyone know the range of the tx power adjustment for an xts3k?
Ie approx tx W at full attenuation, and at min?
Also, what are the side effects if any of playing with the tx power settings?

RKG · Post by **RKG** » Wed Feb 18, 2004 1:49 pm

The softpot values on the screen to which you refer are arbitrary; no value relates to a given output power, and the interval between values is not linear. The only reliable way to set output power is with a wattmeter or service monitor.

Note that with a lot of radios, it is possible via the RSS screen to command an output value that is above the rated capacity of the radio, which will eventually fail something.

bhaguan · Post by **bhaguan** » Wed Feb 18, 2004 7:18 pm

I am aware of the above, but was wondering if anyone can tell me the approximate power out for the Maximum and Minimum softpot values (ie has anyone tried and measured these values), keeping in mind a 403-470Mhz XTS3000.

And apart from the potential to damage your radio, do adjustments made to the tx power softpots put any other settings out of whack?
Do you need to realign any other settings after changing the tx power settings?

mike m · Post by **mike m** » Thu Feb 19, 2004 7:53 am

for the UHF radios the max rec setting should be no more than 4 watts and the lowest .5 watts. Below .5 watts The engineers at mot were worried that the power module could go spurious and above 4 watts the radio heats up so fast that it cannot dissipate the heat build up.

I typically set my UHF radios for 3 watts max and .5 watts min.
For the VHF and 800 radios the same low .5 watt held and the high was 5 and 3 watts respectively, although I have some VHF radios that max out at 4.75 at the high end of the band and this is no big deal as I also set my VHF's to 3 watts max.

Mike