Ferrite Flat Cable RFI/Noise Filter, 1.35" wide slot RFI Range 10-500 MHz, 1 Piece
| Dim | mm | mm tol | nominal inch | inch misc. |
| A | 49.5 | +/- 2.5 | 1.948 | _ |
| B | 33.70 | _ | 1.327 | _ |
| C | 32.3 | +/- 1.6 | 1.272 | _ |
| D | 7.70 | +/- 0.5 | 0.303 | _ |
| Cable Information | |||
| Max Diameter | Max Dimension | Solid Equivalent | Flat Cable Cores |
| 0 0 |
33.70mm x 1.30mm | _ | - |
Excellent for reducing RFI/Noise into/from flat data,/video cables up to 34mm wide and 1 mm thick. Very useful suppression up to 500 MHz using mix 43 material.
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