Jim,
Either you have a weak 15 meter crystal, or the bandpass filters are not
properly peaked on 15 meters.
Do you have an RF Probe or a 'scope? If so, measure the RF voltage at
P1 pin 6 on the 4 band board. It should be greater than 70 mV rms or
200 mV peak to peak. You can do a preliminary peaking of the pre-mixer
bandpass in receive while monitoring the RF voltage at this point.
Be certain you are tuning to 15 meters instead of at a higher frequency
- do the initial peaking during receive while listening to a known 15
meter signal. If you do not have a signal generator, use another
transmitter operating into a dummy load and place the end of a 'hunk of
wire' antenna close to the dummy load.
On the suspicion that there is some other problem in the RF transmit
chain limiting the output to 2 watts, do the transmit peaking at 1 watt
instead of 2 watts. If the power goes up to 2 watts during the process,
exit TUNE and reenter to bring the power back down to 1 watt and
continue to try to find the peak.
73,
Don W3FPR
On 6/11/2013 11:58 PM, Jimithy66 wrote:
My K1 was a wonderful radio on all bands 40 - 17m.
However 17m saw very little use and 15m was desired..
The 26.050 crystal was replaced with the kit supplied 29.000 MHz
crystal for 15m and the K1 realigned on all bands.
All seemed to go well with the receive and transmit alignment
with the power level set to 2 watts per the manual.
However now the power will not go above 2 watts on 15m..
All bands go to 5 watts measured on a WM-2 watt meter
but on 15m the output stops at 2 watts..
15m programs OK from 0.2 to 2.0 watts output but not higher.
The K1 display reads 5.0 when being set with buttons but
the K1 power output display reads only around 2.1 or so watts.
.
All frequencies are correct on another receiver.
Am I missing something ? Any help would be appreciated.
Thank you , 72/73
Jim / W1FMR
.
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