[RFI] CARRIER ON 40-METERS
WW3S
ww3s at zoominternet.net
Mon Jan 30 20:01:05 EST 2023
easy to copy here in NW PA, just south of Lake Erie......definitely W/SW
of here. I have a 2L phased verticals, roughly 50/230 degrees, with
18db of attenuation , its S1 switched to the NE, and S5 to the
SW.....without attenuation, its hard to tell the difference. Maybe I'll
try tomorrow in the daylight.
------ Original Message ------
>From "Steve London" <n2icarrl at gmail.com>
To "Don Kirk" <wd8dsb at gmail.com>
Cc "rfi at contesting.com" <rfi at contesting.com>
Date 1/30/2023 7:56:10 PM
Subject Re: [RFI] CARRIER ON 40-METERS
>NNE from SW New Mexico
>NW from Central Texas
>W from Virginia
>E from Oregon
>
>Colorado, Kansas, Nebraska, Wyoming seems likely
>
>73,
>Steve, N2IC
>
>On Mon, Jan 30, 2023 at 5:51 PM Don Kirk <wd8dsb at gmail.com> wrote:
>
>> Back in April 2022 there was a carrier on 40 meters for many weeks as I
>> recall. TDOA was said to not work well because the carrier was constant
>> whereas they said you needed the carrier to be on and off (I have no idea
>> when TDOA works well and when it does not work well). I was able to
>> provide a heading from Indiana using my portable flag that turned out to be
>> within +/- 5 degrees of the actual location which turned out to be in Alma
>> Colorado and it turned out to be a summer home of a ham who had remote gear
>> located at his cabin and somehow the transmitter got locked on. Another
>> ham actually took to the sky in his airplane trying to DF the signal using
>> DF gear in his airplane but it was the FCC that actually located the
>> source. Tuned loops did not work well obtaining a heading on the signal
>> because tuned loops have very little directional properties for high
>> arrival angle signals which we were often encountering on 40 meters. My
>> portable flag did the best because it still provided reasonable front to
>> back properties at the high arrival angle we were often dealing with.
>>
>> I just did a quick check of the 7.195 MHz carrier at about 7:30 pm EST with
>> my portable flag and I can actually hear it with the portable flag just
>> fine without any preamp from my home in Fishers Indiana. I used a preamp
>> to get enough signal strength so I could use the crude S meter on my
>> portable receiver, and doing a very quick reading I obtained a heading from
>> Indianapolis of approximately 265 to 270 degrees give or take a little
>> bit. It's very cold outside right now so I did not spend any time trying
>> to get an accurate heading, I just wanted to see what general direction it
>> was coming from. I was not totally out in the open (I was standing pretty
>> close to my house), so I will try and get a better heading when time and
>> weather conditions permit.
>>
>> Just FYI,
>> Don (wd8dsb)
>>
>> On Mon, Jan 30, 2023 at 6:06 PM Don Moman VE6JY <ve6jy.1 at gmail.com> wrote:
>>
>> > the source is likely from North America (or any other country that uses
>> 60
>> > hz power) as the carrier has 120 hz power supply sidebands...
>> >
>> > On Mon, Jan 30, 2023 at 3:59 PM Michael Carter <Mike.Carter at unh.edu>
>> > wrote:
>> >
>> > > If my reading of that table from the source
>> > > Joe linked is correct, the China transmitter
>> > > on 7.195 MHz has a TX power of 50 watts.
>> > > Seems unlikely to provide S9 + 10 dB signal
>> > > or larger in west central US......
>> > >
>> > > Mike, K8CN
>> > > ________________________________
>> > > From: RFI <rfi-bounces+mike.carter=unh.edu at contesting.com> on behalf
>> of
>> > > David Eckhardt <davearea51a at gmail.com>
>> > > Sent: Monday, January 30, 2023 5:52 PM
>> > > To: Joe <nss at mwt.net>
>> > > Cc: rfi at contesting.com <rfi at contesting.com>
>> > > Subject: Re: [RFI] CARRIER ON 40-METERS
>> > >
>> > > CAUTION: This email originated from outside of the University System.
>> Do
>> > > not click links or open attachments unless you recognize the sender and
>> > > know the content is safe.
>> > >
>> > >
>> > > I would rule out either of these two sources. It is strong with slow
>> > > ionospheric fading indicating only one skip zone. Certainly not
>> > > characteristic of Chinese or German signals in the middle of the
>> > afternoon
>> > > on 40-Meters.
>> > >
>> > > Dave - WØLEV
>> > >
>> > > On Mon, Jan 30, 2023 at 10:42 PM Joe <nss at mwt.net> wrote:
>> > >
>> > > > According to these folk it's Germany or China.
>> > > >
>> > > >
>> > >
>> >
>>https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.freqspotter.com%2Fsearch.php%3Fsearch_for%3Dguide%26q%3D3%26order_by%3Dcallsign%26page%3D45%26order_direction%3DASC&data=05%7C01%7Cmike.carter%40unh.edu%7C26a8ef3f122e41c3051a08db0314c5e6%7Cd6241893512d46dc8d2bbe47e25f5666%7C0%7C0%7C638107159972664361%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mxIzPgYi3nT84MZeuzbbeK3zX3BKeJujf%2Fs8blpDi28%3D&reserved=0
>> > > >
>> > > > Joe WB9SBD
>> > > >
>> > > > On 1/30/2023 4:36 PM, Wes Stewart via RFI wrote:
>> > > > > Using my Perseus it's peaking -70 dBm on my 40-meter inverted-vee
>> > > with
>> > > > 30 dB fades here in Tucson at 2225Z.
>> > > > > I have no idea what it is.
>> > > > >
>> > > > > Wes N7WS
>> > > > >
>> > > > > On Monday, January 30, 2023 at 03:06:28 PM MST, David
>> Eckhardt<
>> > > > davearea51a at gmail.com> wrote:
>> > > > >
>> > > > > Strong here in N. Colorado. 7.195 MHz. It is being heard at
>> least
>> > > > from E.
>> > > > > Texas to Kansas and, of course, here in N. Colorado. It is a clean
>> > > > > unmodulated carrier and has been present for 3 to 4 days. I've
>> heard
>> > > it
>> > > > > typically during daytime hours, but not tried during the evening.
>> > > > >
>> > > > > Does anyone have information on what it may be?
>> > > > >
>> > > > > Dave - WØLEV
>> > > > >
>> > > > _______________________________________________
>> > > > RFI mailing list
>> > > > RFI at contesting.com
>> > > >
>> > >
>> >
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>> > > >
>> > >
>> > >
>> > > --
>> > > *Dave - WØLEV*
>> > > _______________________________________________
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>> > > RFI at contesting.com
>> > >
>> > >
>> >
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