[Johnson] RE: GB> RFI

Theosleaper theosleaper at comcast.net
Thu Jun 21 19:56:21 EDT 2007


Hello Mike,
I put some Radioworks "snap-on RF Cores" at my answering machine and the
thermostat line to the Furnace Controller.  I run 400 watts on 75 meters
into a 20 meter indoor dipole with center loaded inductors in each leg so
that the dipole resonates on 75. I live in a townhouse and educated my
neighbors on RF Cores and gave them some. They thought it was fun to learn
how they worked and now everyone is happy with a Ham Radio Guy next door.
Rick, K1WYH
 -----Original Message-----
From: owner-glowbugs at piobaire.mines.uidaho.edu
[mailto:owner-glowbugs at piobaire.mines.uidaho.edu]On Behalf Of Langston, Mike
Sent: Thursday, June 21, 2007 11:18 AM
To: glowbugs at piobaire.mines.uidaho.edu; hallicrafters at mailman.qth.net;
johnson at mailman.qth.net
Subject: GB> RFI


  Hello everyone,



  I got on 75M AM last night testing out a new antenna (multi-band trap
inverted vee for 80/40/20 I picked up at HamCom). No AM activity that I
could hear at 3880 so I dropped down to about 3875 and broke in on a SSB
group. The antenna seemed to be working fine.



  Then, the XYL appeared in the shack holding the phone. Seems our next door
neighbor was calling complaining that I was causing their security system to
go off.



  I was transmitting using a B&W 5100B barefoot at about 90 watts output.
This rig has a built-in low pass filter. No tuner was in the line. The rig
loaded up fine. The antenna is fed with coax.



  This is a new one on me. Anyone ever have trouble with RFI getting into a
security system wreaking havoc? Any suggested fixes or trouble-shooting I
could do?



  For the hallicrafters list, I was receiving on an SX-101A.



  For the Johnson list, my Viking II is about ready for an on-air test.



  Thanks in advance for any help.



  Mike Langston KL7CD

  Dallas-Ft. Worth


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