[RFI] My RFI - weekly report.

David Cole dave at nk7z.net
Wed May 28 08:46:51 EDT 2014

Hi Ken,
So far I have been lucky, and S-meter Lite has worked with any radio I
own...  As you mentioned, the limiting factor is CAT, hence the stand
alone device for measuring RFI...  I wanted to get away from CAT
totally.  I have a FT-900 in my car, and a THF6, both have soft
S-meters, not real meters.  Right now I am looking for a portable radio
that will do something on the order of 40 meters, that has a real S
Meter.  One I can tap!  :)

I am also working on a new hand-held DF loop...  I will publish
construction details on the web site when finished for both projects.  I
expect the loop to be finished within the next month or so.  I want
something that is tough, and works, and will let me take bearings and
make triangulation data.

Thanks and 73's,
For equipment, and software setups and reviews see:
for MixW support see;
for Dopplergram information see:
for MM-SSTV see:

On Tue, 2014-05-27 at 21:28 -0700, Kenneth G. Gordon wrote:
> On 27 May 2014 at 20:22, David Cole wrote:
> > Hi,
> > 
> > Just as a tease, I am working on a device to map the area...  It is an
> > arduino, connected to a GPS, and the S Meter of a radio, and a standard
> > Antenna...  I then just drive around and get a heat map of the RFI in
> > the area...  I have the GPS part working now, and am working on the S
> > meter interface now.
> > -- 
> > Thanks and 73's,
> That sounds very snazzy, David. The only thing about "S-Meter Lite" I found 
> distressing is that it requires a CAT radio in order to work.
> I'd like a similar device that worked on AGC voltage instead.
> Oh, well...
> Ken W7EKB
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