[TenTec] Orion II Low Output on 12 and 15 m

[Kim Elmore]

I should have been more explicit at the end of my message: I tried 
adjusting the PWRSET  control  -- R179 on the A5 board -- after cleaning 
exercising all of the connectors in the rig (there are a lot of them!). 
I found that 1) R179 is very sensitive and, 2) it did *not* affect the 
maximum power output on either 15 or 12 m but *did* affect the other bands.

I have tried all the various reset options, but these made no difference.

Has anyone else experienced anything like this with their O II?

73,

Kim N5OP

On 6/28/2013 10:16 PM, Kim Elmore wrote:
> I have an Orion II  and have noticed over time that its output on the 
> 15 and 12 m bands is lower than all the other bands on LCW, UCW and 
> FSK. With the PWR set to 100, the 160 through 20 m bands all show 
> about 105 W output using a 13.8 VDC power supply and a known accurate 
> B&W 334A dummy load. This output is stable regardless of whether the 
> internal tuner is used. Output on the 10 m band is 90 W, but on the 15 
> and 12 m bands, output is about 70 W. also, the ALC indicator is NOT 
> lit at the full power output setting on either the 15 or 12 m bands, 
> but IS lit on all other bands. The ALC indicator will light on the 15 
> m band when the PWR setting is adjusted down to 76 or below and when 
> adjusted down to 84 or below on the 12 m band. Any adjustment above 
> this level results in the ALC light being extinguished. On the 12 and 
> 15 m bands any power output is not affected until the PWR setting is 
> at or below these levels. The power indicator meter on the Orion II 
> unit itself indicates about 95 on all bands except 15 and 12 m. On 15 
> m it indicates 82 and on 12 m it indicates about 88.
>
> I had mentioned this earlier and had tried adjusting the internal ALC 
> level. This didn't affect the 12 or 15 m bands but did affect the 
> others. I exercised all of the plugs internal to the radio, but it 
> made no difference. Has anyone else experienced this? If so, what's 
> the fix?
>
> Kim N5OP
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