hf ssb codan on td5 and injector noise

**Tins** · 25th May 2017, 11:11 AM

Solving HF interference from the TD5 motor

chrisl9515 · 20th June 2017, 08:59 AM

Radiated emissions Alurotd5radiated.png from 2003 Discovery Td5. If its any use to anyone all the spurious appear to be down at the lower end of the HF band as low as 733 KHz, with the primary at 1.5444250MHz at approximately -50 dBm as measured from max hold 360 degrees around the vehicle (note the maximum emissions are from the engine bay on the drivers side.I suspect a good quality high pass filter will sort these HF issue out at least making HF reception possible.

**rover-56** · 20th June 2017, 10:32 AM

I had a Codan HF in my D2 TD5 and had that interference. Mostly from the injectors and mostly below 7 MHz.
I made the radio quite useable by placing 3 snap on ferrites on the injector loom as close to the engine as I could get, and a couple more on the power lead near the radio. The Codan is quite good at rejecting non voice interference anyway.
The difference between mine and yours is that I had the antenna on the back door.

I still have the bracket. PM me if interested.
( Edit- sorry just noticed you have a Defender)

Cheers,
Terry

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