Re: Tecsun PL-360 7.5" Plug-in Loopstick Project Update


Do I have any chance here in San Diego to get that station on 1134? I have a local 10kW on 1130 (KSDO) that's 6.33 miles away at a heading of 350.03°, so that may pose a bit of a challenge. A few barefoot signal readings in 1kHz BW, while facing KSDO's transmitter, are: 1130-1131=63dBu, 1132~50-54, 1133-1135~38-51, 1140~38-51, at which point the chatter starts to quiet down. On 1141 it's 37-39dBu with some chatter but not nearly as much as on 1140, on 1142 there's little bits of chirps here and there at 37dBu, 1143 is fairly quiet with about 35dBu.
Also what about the TPs on 747 and 774? I have a local 50kW nighttime KFMB on 760 7.3 mi away, heading 320.65°, which is giving me readings of 39dBu on those frequencies. I also have yet to log the TP on 594, thanks in part to 600 KOGO, whose 5kW IBOC signal, 7.72 mi @ hdg 249.21°, is 34dBu.
Are there any TPs or TAs I should try for barefoot with the somewhat high RF here? Before I got the PL-380 and was trying a couple other radios, I remember I had the G8, and some of the local signals were indicating upwards of 75-80dBu on their assigned frequencies. I kinda wish the PL-380 wasn't limited to indicating 63dBu, as I have several stations that indicate that here.

--- In ultralightdx@..., D1028Gary@... wrote:

Thanks Tony,

Your 7.5" plug-in loopstick package is traveling faster than expected,
considering that it's a weekend with NHL playoff distractions :-) A Monday
arrival would be great.

Yes, 1134-Croatia made a few booming appearances even right here in western
Washington last fall, and it's too bad they cut their hours. On peak
evenings they would fade in around 5 PM here in October, and stick around until
about 8:30 PM. I was able to receive it barefoot on a stock PL-310 (the
only TA ever received barefoot here), and boost up its signal to a very
healthy level with the 6' PVC tuned passive loop in the back yard.

Tony, I hope you will have as much fun with your 7.5" plug-in loopstick as
I've had making them (and sending them out). There is something weirdly fun
about boosting up the AM sensitivity of this "Clark Kent" radio, and
making it a super DX performer!

73, Gary

In a message dated 5/15/2010 12:41:59 P.M. Pacific Daylight Time,
tonyward@... writes:

Mine is sitting in Mississauga Postal Centre (the other side of Toronto),
where it arrived at 3 am this morning, according to tracking. I am looking
forward to plugging it in when it finishes the final 65 miles of its
journey Gary, possibly as early as Monday as it is through Customs already. I am
also warming up a few of my classic Sonys --- like the 2010 --- and hope
to have time to play with this little beauty on other, less elaborate
circuits. No doubt I will have to prod it to resonate it off the 360. Now if only
1134 Croatia hadn't chopped their evening hours a couple of months ago ---
I was hearing that barefoot nightly on the PL380 not so vry long ago ...

Your efforts, and contribution to the hobby, is very much appreciated by
me, and all others whose opposing thumbs are opposed mostly (it seems) to
fine work Gary, and I thank you on behalf of Klutzes everywhere!

Tony (VE3NO) ComputerViz, NYAA Starfest On-Line


Now spending the BBQ Season channelling the Inner Carbon of Cows...

From: "D1028Gary@..." <D1028Gary@...>
To: ultralightdx@...
Sent: Sat, May 15, 2010 3:12:29 PM
Subject: [ultralightdx] Tecsun PL-360 7.5" Plug-in Loopstick Project Update

Hello All,

Thanks to Richard and Kevin for their initial DXing reports on these
PL-360 7.5" upgrade loopsticks. The concept of plugging in a highly sensitive
loopstick to this DSP model appears to be very popular, and serious orders hav
e been placed with Amidon (and other suppliers) to keep up with the demand.

7.5" Loopsticks have already been shipped to Richard, Kevin, Tony, Greg,
and Barry. Phil's package will go out today, and John's should go out
Monday. Many more loopsticks are currently being constructed for deserving DXers,
and the "mini-factory" here should be in operation for at least another
month. Those DXers who have expressed interest in the loopsticks may receive
them a little sooner than expected, due to improvements in the construction

Since the project offers a rare opportunity for non-technical DXers to
receive a huge AM (or LW) sensitivity boost without any radio modification,
these 7.5" plug-in loopsticks are being offered at cost only, with charges
only for material and shipping ($31 total, for North American DXers). With
over 20 orders already, however, a maximum of 25 loopsticks for the current
project is planned, to provide time for other upcoming hobby and family

Initial work has also started on a new project to modify Tecsun PL-380
units (with their awesome 1 kHz DSP selectivity) to accept these 7.5" plug-in
loopsticks, designed for the PL-360. The electrical modification is very
simple, and only a few more mechanical refinements in the design will be
necessary. Those who have purchased these monster plug-in loopsticks for the
PL-360 may have yet another transoceanic DX-chasing option, just in time for
the Fall TA and TP-chasing season :-)

73, Gary DeBock (in Puyallup, WA, USA)

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