Off Center Fed (OCF) Dipole Baluns

4304523032 - Off Center Fed (OCF) Dipole Baluns
+3

SIGNALPEN(TM) PENCIL SIZE RF DETECTOR LIGHT, 60 Hz to 1.2 GHz, Miliwatts to Kilowatts, Direct Contact or Inductive Detector, No Battery! Fits in Shirt Pocket!

SIGNALPEN
$49.95
In stock
1
Product Details

SignalPen(TM)

Our device, in the style of a pen. A portable device that you hold at the end of the pen to detect any RF signal source in close proximity without a battery. It uses RF electromagnetic field as a power source to light up an indicating light. Simple tool/instrument to locate or troubleshoot any RF source from handheld transceiver, mobile radios, or base station and radio repeaters. This device also detects a high voltage AC power line from 15kV and above, also a handy tool for electrician. Just store in shirt pocket like your other pens!

Self-Powered RF Detection Light (No Battery Needed)

Product Dimensions: The size of a pen

Specifications: 60 Hz to 1.2 GHz

For Optional Models: 2.4 to 6 Ghz Min. to Max.

RF Powered Detection: Milliwatts to Kilowatts

Proximity Detection: Wireless: 0.5 in to 3 ft

Capable of in-circuit detection from 20 mW. 30 seconds at 100W

Warranty: 3 years warranty no matter what, except:Intentional breakage and tampering of device

USER MANUAL

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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