[Elecraft] P3 TX Monitor

[John Lemay]

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:donwilh at embarqmail.com] 
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 ?
>