Tony,
I have been using an SDRPlay ($150 from HRO) and a small laptop or
tablet running HDSDR (free). If you build or buy a high impedance
preamp, you can use a 3 ft. whip with a magmount and you have a wide
band set up that will show you the spectrum of the RFI from your car.
When you get closer you can DF it with a loop. I have found that being
able to look at the whole spectrum is really helpful in tracking down
the RFI because you can really keep track of the RFI signature. The
SDRPlay allows you to look at about 5 MHz of spectrum from 100 kHz to
about 2 GHz.
Tom W0IVJ
On 2/5/2016 7:52 PM, Tony wrote:
All:
I've had an RFI issue coming from a specific direction for several
years. It's a unique noise that appears on several HF bands which is
usually a couple of S-units above the noise i.e., just enough to cover
weak signals in that direction.
I thought I could use a VHF / UHF radio to pinpoint the source, but
I'm not able to hear it on my all-mode VHF/UHF home station with Yagi
antennas.
The ideal setup might be a portable HF radio which can tune the same
frequencies that are susceptible to the noise. Something small enough
to carry and use with a portable HF loop.
I was thinking about a Kenwood TH-F6A that has HF SSB / CW coverage,
but I'm told the receiver isn't very sensitive; even with an external
antenna.
Any suggestions?
Thanks
Tony
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