>Do any Bird elements give meaningful readings down at 136kHz?
The lower frequency limit of the through line elements is 450kHz.
Therefore you won't get any sensible readings at 136kHz.
Besides that SWR calculations from the forward and reverse
power readings generally are not very accurate at low SWR with the bird through
line system.
>are there any commercial alternatives to building something?
Yes.
I'm using a LP100A vector wattmeter
http://www.telepostinc.com/lp100.html
with dual coupler option
Beside the standard coupler I have
the RF sensor LPC6 (100kHz - 20MHz ,1KW) which is not listed on the web page
but is available on request.
The power rating is quite conservative.
73
Clemens
DL4RAJ
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]] On Behalf Of Chris Wilson
>Sent: Monday, July 20, 2015 5:18 PM
>To: [email protected]
>Subject: LF: Power monitoring at LF?
>
>20 July 2015
>
>
>Do any Bird elements give meaningful readings down at 136kHz? If not
>are there any commercial alternatives to building something? Thanks.
>
>
>
>--
>
>
>Best regards,
> Chris mailto:[email protected]
>
>
|
