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Re: Question about ultralight and loops for MW

Gary DeBock
 

"The directly-connected ferrite and air core loops always require modification to the radio (and possibly the addition of other external hard-wired components), but avoid the need for a separate tuning step."
 
Hello All,
 
This is one unique exception to the above statement-- the 7.5" plug-in loopstick PL-360, which requires no radio "surgery," but provides a nice AM performance boost. Having just sent out over 20 of these, I should have remembered this exception :-)
 
73, Gary  
 
In a message dated 7/6/2010 1:32:44 P.M. Pacific Daylight Time, D1028Gary@... writes:

 

Hello Sarmento,
 
Many air core and ferrite core external loops give excellent performance with the Tecsun PL-380 and PL-310 models, and make DXing a lot more fun.
 
Depending upon your DXing preferences, you can choose a transplanted ferrite loop (like the 7.5" loopstick PL-380), an inductively coupled ferrite loop (like the Q-stick) or a direct or inductively-coupled air core loop. All of these antenna designs have performance tradeoffs, and no one design is perfect for every situation.
 
Most DXers who wish to avoid "surgery" on the radio use air or ferrite core loops with the inductive coupling system, which gives an excellent performance boost (depending on the size of the loop) with an extra tuned circuit to aid in selectivity. The directly-connected ferrite and air core loops always require modification to the radio (and possibly the addition of other external hard-wired components), but avoid the need for a separate tuning step. 
 
My own favorite for convenient DXpedition usage is the 3' portable PVC air core loop, which is described in the photo article at  http://www.mediafire.com/?hqyzzu1mvyt . This tuned passive loop provides a powerful inductive coupling boost for the barefoot PL-380, can be assembled in 2 minutes, and will fit inside a packed compact car trunk.
 
73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)
 
 
 
In a message dated 7/6/2010 4:12:29 A.M. Pacific Daylight Time, sarmento.campos@sarmento.eng.br writes:
 

Hi

After have seen info about these new DSP receivers (like PL310/380) :

http://bbs.tecsun.com.cn/0002.asp?open=186695

I wonder if it would support loop antennas, like square air coil or even ferrite loops.

If one issue to add : living near big power MW stations.

Have anyone tried MW dx in this conditions ?

Regards
Sarmento - Rio de Janeiro - Brazil

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