[TenTec] Omni VI low TX power

[Ken Brown]

Hi Mike,

Thanks for the suggestion. I have received other suggestions that the 
problem is voltage drop in the 12 VDC supply to the rig. I sort of doubt 
that is the problem, because the power drops after having been turned on 
for several minutes and only operating in receive mode during that time. 
Also the power is constant during key down. I would expect that if it 
was voltage drop in the 12 VDC supply due to high resistance in a 
connector, it would require transmit current levels to make the voltage 
have an effect on transmit power. I also do not notice any dimming of 
the meter pilot lamps during key down. Still I believe it is a good idea 
to get a voltmeter on the load side of that connector and see what 
happens....Come to think of it, those are #47 bulbs, the voltage to them 
must be regulated down to around 6.3 V. So even if the Vcc to the finals 
is dropping to 10 V there could still be a steady regulated 6.3 V on the 
lamps..... Thanks again for the suggestion. I will let you know what I find.

Ken N6KB

Barbara Maloney wrote:

>Ken,  Try plugging a voltmeter into the 12v accessory RCA jack on the rear of the Omni.  Also fix a place to measure the voltage between the ps and Omni power jack.  When you key down the rig, check for voltage drop difference between the two points. 
>