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Old 08-16-2012, 10:03 PM   #1
TXiceman
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Join Date: Nov 2007
Location: Near Houston, TX
Posts: 553
Default Noise in a new 6.7L diesel.

I competed the install of a Yaesu FT857D radio, with a Lil'Tarheel II antenna, Turbo Tuner and a dual band VHF/UHF antenna. Power wires direct from the right side battery and the radio is mounted under the passenger seat.

I have a coaxial 6 turn choke on the HF antennas lead as close to the antenna as possible with ferrite chokes on the coax at the radio. The antenna is mounted at the right front corner of the bed and is grounded to the bed and frame with braided RF ground strap.

There is a popping noise that increases with engine speed. I cannot get the DSP or NB to hardly touch the noise. The rig works great as long as the engine is off.

My next steep will be to add RF ground straps from the hood to the fenders and frame. Them I will try adding ferrite chokes on the power feed.

The noise is exactly like an ignition noise, if it had spark plugs; so it has to be from the injectors.

Tomorrow I am going to experiment with the antenna disconnected at the antenna and then at the radio to see if the noise is entering from the power feed or the antenna system.

I had the same issue with my 2002 7.3L, but it was not as severe and I did help it with chokes on the antenna feed.

Any ideas or feed back would be appreciated. Who could I contact at ford fro some help on this issue?

Ken
__________________
KE5DFR
2013 HitchHiker Champagne 38RLRSB, 2012 F350 Dually crew cab, 6.7L,
Mobile- Yaesu FT857D w/ Lil' Tarheel II antenna and Larsen dual bander, Turbo Tuner.
Base unit...Kenwood TS480HX, LDG AT200 Pro tuner, Eagle One Vertical and Windom 80 meter dipole.
Standard Schnauzer..her call is K9WOOF
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