OK, Nick, here is a link to Chris' recording of the signal from 810-Kaesong, North Korea (close across the inter-Korean border), as "modified" by a local South Korean jammer. My own impression is that the original programming was obnoxious enough to deter listeners, even without the jammer https://app.box.com/s/fk0yy9hyiy8q3gclpgdtd7zjup507mwp 73, Gary DeBock (in Puyallup, WA, USA)
----- Original Message ----- From: "Nick Hall-Patch" <[email protected]> To: "Mailing list for the International Radio Club of America" <[email protected]> Sent: Saturday, May 21, 2016 1:43:56 PM Subject: Re: [IRCA] From Chris Kadlec-- South Korean Jammers Was there a link to an audio clip there Gary? I'd be pleased to hear the jammer if I could get past KGO etc.... Tnx. Nick At 20:10 21-05-16, you wrote: >For those interested, the following is from a >Facebook post by Chris Kadlec (located near the >border with North Korea) regarding the operation >of MWÂ jammers on the south side of the border. >73, Gary DeBock (in Puyallup, WA, USA) >Â > From Chris: >Â > > >The hazards of DXing AM radio here in Korea >include situations like this: seemingly >low-powered AM transmitters not located on any >tall sticks but instead disguised elsewhere and >jamming signals. Jammers that are 70dBu in one >spot but practically gone a few miles down the >road. Signals that jam only a specific signal on >a frequency with a 30-40dBu generated hum that >can't be tracked to anywhere and is never more >powerful than that despite always being atop the >target signal ( ... these are getting on my last >freaking nerve!!) but leave the other signals on >a frequency alone. Other miscellaneous >unidentifiable weirdness that makes me wonder if >I'm actually even hearing what I think I'm hearing. > > >Here's local 50kw 810 Kaesong, North Korea a few >moments after the TOH at 1100 Pyongyang time >(1130 Korea time) Saturday morning. While the >tower is 9 miles away, it can be seen in clear >sight even with the smog (it's a skyscraper in >itself) from the recording location. Despite >this, the signal is still destroyed by some type >of generated interference, perhaps the silent >jammer that can be heard in the metro area 20 >miles away. How the Kaesong signal can't >overcome this in direct line of sight is just >beyond me. They don't have the best audio >(better than 1053, which sounds like a 10-year >old was playing engineer), but there is no way >this is their unhampered signal. Despite this, >it's 65dBu -- a silent jammer or else Kaesong >itself, I have no idea -- recorded at the North Korean customs checkpoint. > >Â >Kaesong 810 > >beaglebass.com > >_______________________________________________ >IRCA mailing list >[email protected] >http://montreal.kotalampi.com/mailman/listinfo/irca > >Be sure to register now for the Joint DX Convention >Kansas City, September 9 to 11. Hotel space is filling up. >Registration info: >http://www.nrcdxas.org > > >Opinions expressed in messages on this mailing >list are those of the original contributors and >do not necessarily reflect the opinion of the >IRCA, its editors, publishing staff, or officers > >For more information: http://www.ircaonline.org > >To Post a message: [email protected] _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Be sure to register now for the Joint DX Convention Kansas City, September 9 to 11. Hotel space is filling up. Registration info: http://www.nrcdxas.org Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected] _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Be sure to register now for the Joint DX Convention Kansas City, September 9 to 11. Hotel space is filling up. Registration info: http://www.nrcdxas.org Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
