[Lowfer] qrp xiq in EN90xn

Thu Jan 23 22:58:19 EST 2014

John: Tnx info, I was watching XIQ and XJM last nite when the -22 capture occurred. I seemed to be several dB shy of a capture last nite.  I believe band condx are better tonite, likely could have copied your QRP signal with 25W to the 102" vertical.....band cndx seem to be changing at the moment and not favoring your direction here...

73  Mike wa3tts
  ----- Original Message ----- 
  From: John Langridge 
  To: Michael Sapp ; Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands 
  Sent: Thursday, January 23, 2014 10:42 PM
  Subject: Re: [Lowfer] qrp xiq in EN90xn

  I've been playing with seriously compromised antenna for the past few weeks running some experiments.  Last night I was running 10 watts to the coax and had marginal results.  Eric copied me 24 times over the course of the night, best at -22.

  Tonight I pushed the power up to around 50 watts and that seems to be the tipping point as results have been spectacular tonight.  

  The normal antenna (72 ft T-top with 130, 100-foot radials) is detuned at the moment.  The 102" whip, which is actually a 1" aluminum pipe, 102" tall, is resonated with two coils in series, about 850 uH total (will measure when I disassemble it in a few days) and sitting over an old radial field which at one time had about 70 radials, each 45 -50 feet long.  The radial field has not been used in many years and the radials have not been maintained in some time so i don't know how many radials are actually active.

  This setup is definitely working tonight.  So far in this series of experiments the best results were found with a 20m inverted vee (45 degree sloping angle) fed as a marconi with 25 feet of ladder line, resonated with a 5 gallon bucket vario and 4, 30-foot radials.  That test was conducted from a site 1-mile away from here so no chance of interaction with a resonant structure.

  Its really been amazing what i am finding about the performance of small antennas on 630m...Don't get me wrong, I still prefer the big antenna but its been interesting dispelling the myths about small vertical performance...it does help that we average 30 mS/m in this area..

  73,

  John XIQ

------------------------------------------------------------------------------
  From: Michael Sapp <wa3tts at verizon.net>
  To: John Langridge <jlangridge at sbcglobal.net>; "Discussion of the Lowfer (US, European, & UK) and MedFer bands" <lowfer at mailman.qth.net> 
  Sent: Thursday, January 23, 2014 9:30 PM
  Subject: Re: [Lowfer] qrp xiq in EN90xn

  John: Must be the ground system or whatever else you are coupling too, certainly not the mobile CB whip :)).....

  Although this paper indicates it's possible.....

  http://wwebmail.amwindow.org/tech/pdf/Short%20Ant%20CESmith%201947.pdf

  Really did not expect to copy your signal at that level with the wet noodle in my back yard.....XJM and his phased beverages I can understand.....

  73  Mike wa3tts

  ----- Original Message ----- From: "John Langridge" <jlangridge at sbcglobal.net>
  To: "Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands" <lowfer at mailman.qth.net>
  Sent: Thursday, January 23, 2014 10:18 PM
  Subject: Re: [Lowfer] qrp xiq in EN90xn

  Thanks for the reports Mike.

  I should also note that I am running a 102" whip tonight on TX.
  73 and thanks again!

  John XIQ

  ________________________________
  From: Michael Sapp <wa3tts at verizon.net>
  To: lowfer at mailman.qth.net
  Sent: Thursday, January 23, 2014 9:14 PM
  Subject: [Lowfer] qrp xiq in EN90xn

  HI All: First time I recall capturing WG2XIQ at QRP power (2mw)......19 captures here since 0136 UTC,

  best levels so far -25

  2014-01-24 02:16  WG2XIQ  0.475666  -25  0  EM12mp  0.002  WA3TTS EN90xn  1743  55
  2014-01-24 02:12  WG2XIQ  0.475666  -25  0  EM12mp  0.002  WA3TTS EN90xn  1743  55

  I should snooze on the living room couch more often....(if it is going to help keep the band open, hi)

  XJM must have his antennas another direction, I was hoping for some comparison info......

  73 Mike wa3tts
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