Off Center Fed (OCF) Dipole Baluns

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4599290763 - Off Center Fed (OCF) Dipole Baluns
Bullet 50:50 (1:1) HF Balun + Optional Dipole Kit - .1-61 MHz, 500 Watts PEP, up to 34 dB noise reduction!
Bullet 50:50 (1:1) HF Balun + Optional Dipole Kit - .1-61 MHz, 500 Watts PEP, up to 34 dB noise reduction!
SKU Bullet-1B-500EB
$79.95
3590733157 - Off Center Fed (OCF) Dipole Baluns
Super Bullet 50:50 (1:1) HF Balun + Optional Dipole Kit - .1-61 MHz, 1500 Watts PEP, up to 38 dB noise reduction
Super Bullet 50:50 (1:1) HF Balun + Optional Dipole Kit - .1-61 MHz, 1500 Watts PEP, up to 38 dB noise reduction
SKU SBULLET-1B-1500EB
$119.95
3504269637 - Off Center Fed (OCF) Dipole Baluns
Super Bullet 50:50 (1:1) HF Balun + Optional Dipole Kit - .1-61 MHz, 5000 Watts PEP, up to 60 dB noise reduction
Super Bullet 50:50 (1:1) HF Balun + Optional Dipole Kit - .1-61 MHz, 5000 Watts PEP, up to 60 dB noise reduction
SKU SBULLET-1B-5000EB
$129.95
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Testimonial

Hi Bob,

Radio: Flex-6700 running barefoot -10 to 100 Watts max.
Antenna: MFJ-1216 – 160/80 meter OCFD wire antenna with matching network.
Elevation: Over 60 feet AGL – fully extended.
Installed: Mid November 2013

I operate mainly on the digital modes running less than 50 Watts.  All of the sudden after a few days operating with this antenna, I start to have RFI and my radio was acting up; such as changing bands, SWR changing values, radio failures and turning off. However, when I used my Hy-Gain 18 HT vertical on the same band none of the abnormality occurred.
I contacted MFJ and confirm that what I was noticing was a failure of their “matching network” AKA balun.  They offered no solutions. Then I contacted Palomar Engineers and bought the 1:1 new toroid RF beads.  I called Palomar Engineers and I happened to talked to you directly; regarding the on going issue with the MFJ antenna. I found out that the 1:1 balun was not what I needed (I was miss-informed by MFJ that it was 1:1 matching network.)
You offered to make the required balun 4:1 and the rest is history.

Here are my findings:

  1. No more RFI displayed on the monitors.
  2. Radio not acting up or turning off.
  3. The SWR at 160/80 meter is 1.2:1
  4. No antenna tuner required.  (radio goes to Bypass automatically.)
  5. Worst SWR is on 10 meter with a 2:1 but still usable, with antenna tuner 1.5.
  6. One happy OCFD user!

Thanks to Palomar Engineers design and engineering for solving this issue.

73, Ernest – W4EG