--- Begin Message ---
- Subject: Re: [NRC-AM] 1510 UNID's
- From: Mark Connelly <markwa1ion@xxxxxxx>
- Date: Sat, 18 Apr 2015 13:59:08 -0400
- Delivered-to: irca@xxxxxxxxxxxxxxxx
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1510 Spanish is likely Mexico (XEQI?) at your QTH. Here it would be something from South America but WMEX 1510 is just as tough a pest here as WLAC is for you.
650 Spanish is most likely Progreso Cuba (look for 640, 690, 890, 900 et al. //) although Antena Dos (Colombia) is not totally out of the question. Both stations are regular here, more so than WSM actually.
Stations that are combo skip/groundwave, 100-300 mile range, especially high-band, are toughest to null. Here it means NYC stations mostly + WTIC Hartford, WDCD Albany, etc.
Two of the same type UNTUNED antenna, spaced about 120-200 ft. on the axis pointing towards the signal to be nulled produce the most stable phase null. That could be two loops, two verticals, or two of something else that works.
Mark Connelly, WA1ION
South Yarmouth, MA
-----Original Message-----
From: Les Rayburn <les@xxxxxxxxxxxxxxxx>
To: IRCA@xxxxxxxxxxxxxxxx <irca@xxxxxxxxxxxxxxxx>; am <am@xxxxxxxxxxx>
Sent: Sat, Apr 18, 2015 9:44 am
Subject: [NRC-AM] 1510 UNID's
Finally got the spacing worked out on my Wellbrooke ALA-1530 and the
Clinton
Labs active whip to allow for deeper nulls. Using Garry's
awesome Quantum
Phaser, I'm able to get a nice deep null on one of my
biggest "pest stations"
WLAC, 1510 in Nashville, TN.
At 204 miles, WLAC's 50Kw signal has been nearly
impossible to null
despite my best efforts over the years. Last night, after
nulling the
signal around 3AM, I was able to hear weak signals from two
stations on
the frequency:
A station playing classic country music
format.
A Spanish language station.
Unfortunately, shortly after achieving
the null, a neighbor filliped
something on that filled the entire AM band with
S9 + 20db static. It
persisted for over 15 minutes, so I gave up and went to
bed.
Hoping tonight's TOH recordings may reveal some ID's under WLAC.
WSM
650 KHz "The Legend" is also virtually un-nullable. Last night, I
could hear a
weak Spanish station under it's signal, but nothing more.
Excited to finally
be able to achieve some deep nulls on these stations.
Looking forward to
playing with the setup more if work ever lets up.
--
73,
Les
Rayburn, N1LF
Maylene, AL
EM63
Member NRC, IRCA, & Medium Wave DX
Circle
Former CPC Chairman for NRC/IRCA
Elad SDR, SDR-IQ,Funcube Pro,
Wellbrooke ALA-1530+ loop, LF Engineering
Active Whips,
Quantum Phaser, Kiwa
Loop, Palstar MW
Pre-Selector
_______________________________________________
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of the
35th Edition of the AM Radio Log
http://www.nrcdxas.org
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