Don and Dave Thanks for your replies. I've found the schematic for the W2 meter and sensor and I can see now that there's a lot more electronics in the sensor box than I thought. So rolling my own is not an option.
To answer "why" is easy ....... I run more power on 2m and 70cms than the sensor is rated, and would also like to include 23cms. Thanks again John G4ZTR -----Original Message----- From: Don Wilhelm [mailto:[email protected]] Sent: Wednesday, January 25, 2017 12:37 To: John Lemay; Elecraft Reflector Reflector Subject: Re: [Elecraft] P3 TX Monitor John, There were some changes to the coupler done for it to be used for the TX Monitor - capacitor changes as I recall. If you want power and SWR reading accuracy, get a new RF Sensor. OTOH, if your main interest is in the waveshape display only, then the W2 directional coupler may give you what you desire. 73, Don W3FPR On 1/25/2017 4:01 AM, John Lemay wrote: > I'm considering adding the TX Monitor to my P3. Can I use my own > directional coupler for UHF/SHF, or is it essential to use the Elecraft RF Sensor ? > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
