If you have an older coupler it will work fine for SWR and power
measurements with the P3TXMON but the modulation waveform display will
not show full bandwidth.
Alan N1AL
On 03/20/2018 07:33 AM, Don Wilhelm wrote:
Chuck,
The later W2 couplers are the same as those for the P3TXMON, but the
ones for a time after the P3TXMON was introduced are different.
The early ones will not work well with the P3TXMON.
Sorry, but I cannot tell you when the changeover took place.
You will have to dig up that modification information and examine your
coupler to see if has the changes installed.
73,
Don W3FPR
On 3/20/2018 10:05 AM, hawley, charles j jr wrote:
Are the directional couplers, the DCHF-xxxx, the same as the ones on
the W2 wattmeter? I seem to remember something about modifying an
existing directional coupler in the early days of the P3TXMON.
If they are exactly the same do all the directional couplers ever
sold, early ones and now later ones, work with the P3TXMON?
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