Back in 2011 a newly minted NDB-DXer had the chance to design what no
commercial manufacturer would ever dream of building-- a portable with a
Longwave-optimized loopstick. Even if a radio has Longwave band coverage, all
commercial portables have Medium Wave optimized loopsticks-- typically
resulting in clunker Longwave reception.
In an all-out effort (described at
http://www.mediafire.com/file/38gon1pdmomrsgs/7.5inLWLS-1.doc/file
five different Longwave test loopsticks were constructed and tested at various
frequencies, until the overall "winner" was chosen. The new Longwave-optimized
loopstick was a game changer when installed in Ultralight radios, providing
reception of Longwave TA's in Oklahoma, South American NDB's in Canada and
Hawaiian NDB's on our west coast.
The new XHDATA D-808 model does have Longwave coverage, but you had better
be right next door to an airport if you want to receive any NDB's with the
stock model. The 7.5" Longwave loopstick described above transforms the model
completely-- making it a serious LW-DXing contender, not a pretender. With SSB
capability and great portability, it can provide sensitive reception of NDB's
both day and night, as well as a lot of travel DXing fun. DXers well inland
will have reasonable chances for Longwave TA's in season, and the model
includes excellent FM, SW and AIR band reception as well. The full 16-page
article for "Supercharging" the model with this 7.5" Longwave loopstick is
posted at
http://www.mediafire.com/file/t2989hg61vbkb5h/Supercharging_the_XHDATA_D_-808-FinalMWLW.doc/file
which includes full information for the construction and operation of both the
Longwave and Medium Wave loopstick versions. Good luck to all who take the
plunge!
Gary DeBock (in Puyallup, WA, USA)
"Supercharged" Longwave D-808 model photo is posted at
https://dreamcrafts.box.com/s/9g0g5lq1vaqs1jt2ls4u6ik7wv7x6fg7
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