[TenTec] RFI question for Orion and other TT rigs

[GARY HUBER]

One "easy" way to reduce the "RFI in your shack" is the old time counterpoise. Just a quarter wave length of wire for each band, connected at the ground post of your transceiver and then strung out along the baseboard. I've used a multi-conductor cable, like rotor cable, all conductors soldered together at the termination, but with each conductor a different quarter wave length and the excess wire removed. It works even when the ground rod below the desk doesn't. 

73,

Gary - AB9M
  ----- Original Message ----- 
  From: Tommy Alderman<mailto:aldermant at alltel.net> 
  To: 'Discussion of Ten-Tec Equipment'<mailto:tentec at contesting.com> 
  Sent: Saturday, June 25, 2005 9:52 PM
  Subject: Re: [TenTec] RFI question for Orion and other TT rigs


  Roy,

  One of the best and easiest ways to avoid "RF in your shack" is to make
  sure that one half the length of your antenna plus the total length of
  your feed line is NOT an odd quarter wavelength long. The reason for
  that is if that total is an odd quarter wavelength, you will have a
  maximum voltage field in your shack. The second most easiest thing to
  avoid is do not let the end of any of your antennas terminate directly
  over your shack, as that too, is a high voltage field point.

  Tommy - W4BQF

  -----Original Message-----
  From: tentec-bounces at contesting.com<mailto:tentec-bounces at contesting.com>
  [mailto:tentec-bounces at contesting.com] On Behalf Of
  rsrocket1 at comcast.net<mailto:rsrocket1 at comcast.net>
  Sent: Friday, June 24, 2005 11:01 AM
  To: tentec at contesting.com<mailto:tentec at contesting.com>
  Subject: [TenTec] RFI question for Orion and other TT rigs

  Dear List,
  This is in no way a flame on anything, but I would like to know which
  Ten-Tec rigs are prone to a "dirty" RF shack.  I've heard the Jupiter is
  prone to having problems in a shack with stray RF in it.  I would like
  to know if the Orion has the same problem or if any of the older TT rigs
  do.  I know for a fact that the Century 21 does not because I used it
  without problems.
   
  I know that cleaning up the RF is the best solution, but I am always
  experimenting with antennas, feed lines, baluns, etc. and I have never
  had operational problems with the Icom, Yaesu, Kenwood or Alinco radios
  that I've used.   I've been "tickled" a number of times when touching
  knobs while transmitting, but it seems to be as much dependent on the
  radio as it is with the antenna or feeding system.
   
  By the way, I just picked up my first Yaesu HF rig, an FT-101E basket
  case.  What a joy it is to work on.  Separate removable PC boards, lots
  of easily reached adjustment points, and an excellent user and service
  manual seemingly written for a competent ham, not a service technician
  to understand.  A couple of evenings and it was back to good working
  order.  It's nice to have an appliance to "turn on and talk", but it's
  also a lot of fun to "work" a radio while tuning across the bands.
   
  73
  Roy
  AD6ZU

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