k2, s/n 5171, alignment and test, part iii

[jon howe-2]

Hi:
re: page 75, "40-meter transmitter alignment", current drain during
"TUNE" at 10 watts is between 2.2 and 2.3 amps.  Should I be concerned?
re: page 76, receiver pre-alignment, 80 meters, I had a hard time
peaking L3 and L4. peaking the other bands was easy by comparison.
re: page 77, transmitter alignment, I get the "hi current" display on 80
meters.
What should I check to clear up this 80 m problem?
thanks,
jh

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[stephen Farthing]

Hi,
    Check the number of turns on the toroids for the 80 M band pass
filter. I had a similar problem on 40 M because I had 1 turn too many on
one of the toroids.

Your mileage may vary,

Steve

G0XAR
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[Don Wilhelm-3]

Jon,

The most likely thing to cause Hi-Cur indications is the Low Pass Filter.
Check it carefully for capacitor values and the proper number of turns on
the toroids - count the turns as they pass through the center of the core to
avoid a count that is 1 turn off.

Try peaking the 80 meter bandpass on transmit (at the 2 watt level), you
should be able to observe the peak much easier.  This is a broad filter and
tuning will not be as sharp as other bands.  Normally the peak occurs with
the slugs a couple turns down from the top of the cans, so if you have any
different conditions, check the capacitors in the 80 meter bandpass for
proper values and proper soldering.

73,
Don W3FPR

> -----Original Message-----
>
> Hi:
> re: page 75, "40-meter transmitter alignment", current drain during
> "TUNE" at 10 watts is between 2.2 and 2.3 amps.  Should I be concerned?
> re: page 76, receiver pre-alignment, 80 meters, I had a hard time
> peaking L3 and L4. peaking the other bands was easy by comparison.
> re: page 77, transmitter alignment, I get the "hi current" display on 80
> meters.
> What should I check to clear up this 80 m problem?
> thanks,
> jh
>

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