Common Mode Chokes, Line Isolators

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1501884904 - Off Center Fed (OCF) Dipole Baluns

1:1 Current Balun

SKU BA-1-1000

$24.95

On Sale

940463405 - Off Center Fed (OCF) Dipole Baluns

Coax Inline Common Mode Choke Unun - 500 Watts 25-300 MHz- 10, 11, 6, 4, 2 Meters

SKU FC-8X-3-31

List price ~~$39.95~~

Save 30%

$27.95

Coax Inline Common Mode Choke Unun - 500 Watts 50-450 MHz

SKU FC-8X-5-61

$39.95

4266711302 - Off Center Fed (OCF) Dipole Baluns

MAXI-CHOKER Coax Line Isolator/Balun, 1-61 MHz, 1.5/3KW, SO-239 In/Stud Output, FLAGPOLE OCF, G5RV, ZS6BKW, BN4000 Replacement, Ladder Line-Coax interface

SKU MC-1-1500LL

$89.95

4029797252 - Off Center Fed (OCF) Dipole Baluns

MAXI-CHOKER Coax Line Isolator/Choke, 1-61 MHz, 1.5/3KW/5KW, up to -60 Db Common Mode Rejection, Static Bleeder Option

SKU MC-1-1500

$89.95

4222605655 - Off Center Fed (OCF) Dipole Baluns

MINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW Antennas

SKU MB-1-500SS

$69.95

1112255372 - Off Center Fed (OCF) Dipole Baluns

MINI-CHOKER Coax Line Isolator, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, 1:1 Unun

SKU MC-1-500-50

$69.95

3548913921 - Off Center Fed (OCF) Dipole Baluns

Maxi-Choker, 1:1 Line Isolator 3KW, 7-54 MHz Optimized for Wide Band Log Periodic, HF & 6M Beams. Noise Suppression up to 38 dB

SKU MC-1-3000LP

$109.95

3567278248 - Off Center Fed (OCF) Dipole Baluns

RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!

Suppress Unwanted Noise & RFI

SKU RFI-AS-GEN-2

$129.95

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:

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

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

73, Ernest – W4EG