Old Flex 3000 Power Calibration Procedure

K4MT

Has anyone done a power calibration on a Flex 3000?  I have the correct Powermaster meter available to me and I have done the 5000A before. Is the procedure the same for the 3000?

I notice my PowerSDR power reading is 7-10 watts lower than actual output power.

I hate to send it in and be without the radio for a long time.

K4MT

Bill -VA3WTB

Flex still fully suports all their radios, as long as parts are available.

Dudley WA5QPZ

Gary, Unless you just HAVE to have the exact indicated RF output, I would leave it alone, in normal use , SSB for example, the sample rate of the RF bridge , will not be an accurate indication of output in PowerSDR. You only verify RF output put with constant carrier, normally using the “Tune” function. If you have a PowerMaster 1 (PM 2 will not work) Power output and SWR tests are run separately. You could have a component like a diode or resistor in the bridge that has changed values too, causing a different reading in RF output. Best to check into a dummy load , as antenna system reactance has a big effect on indicated power output also. Dudley WA5QPZ

K4MT

K4MT

K4MT

K4jns

How is this done?

K4MT

You must have an Array Solutions powermaster meter. Must be the powermaster original and not powermaster II.  If you have that meter contact me off group and I will tell you how its done.

Wade Benge

My flex 3000 has very low wattage on all bands, can that be repaired. Was woking great  then next day this started.

Tiberius1

Could someone please let me know how to calibrate tx power

Morris Wideman

Does anyone have a Array Solutions Powermast they would be willing to lend so I can do the power calibration on my Flex 5000A. Willing to pay shipping possibly more. I had to replace the two driver FET`s and now radio needs to be calibrated. Thanks 73 Morris WA4MIT

Hal Massey

"You don't need to have an Array Solutions PowerMaster per se. An old HP-436A that has been calibrated or a Bird 43 directional wattmeter, etc. will work fine. What is needed is a lab calibrated directional coupled wattmeter. The Array Solutions one just happens to be that...\n\n\n"}]