Off Center Fed (OCF) Dipole Baluns

UHF PL-259 PL259 Male Plug to N Female Jack Straight RF Connector Adapter

UHFMTONF
$5.95
In stock
1
Product Details
MPN: UHFMBNCF

Specifications :

* Connector A : UHF male plug PL259 straight connector ( inside screw and center is plug male pin )

* Connector B : N female jack straight straight connector ( outside screw and center is hole female pin )

* Adapter Type : UHF Male Plug to N Female Jack Adapter


* Impedance : 50 ohm

* Gold plated or Nickel plated contacts

* Salt spray test : >= 48 hours, enhanced corrosion resistance

* Mounting : machined brass construction crimp & soldered mount

* Connection Protection: Black Heat Melt Shrink Tube Versafit or equivalent

* Operating frequency :0-6 GHZ

* Technical characteristics : temp. range : -65 to +165 ( PE cable range : -55 to +85 )

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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