[RFI] Toyota Special Instructions

Jim Brown jim at audiosystemsgroup.com
Wed Aug 23 15:54:17 EDT 2006

On Wed, 23 Aug 2006 14:27:39 -0400, NE1B wrote:

>Has anyone found the "Toyota Special Instructions for installation of a 
>mobile two-way radio system"?  

Same sort of admonition in the manual for my 2006 Toyota Sequoia (big SUV). 
No issues on VHF/UHF with 100 watts, but train wreck on HF -- 100 watts on 
20 meters crashed the car's computer. No damage, but top speed was 15 mph. 
Short term fix -- don't transmit, pull and restore main power feed off the 
battery to reboot the computer. 

Analysis and long term fix: Simple ohmeter tests show that many (most?) of 
the body parts are not bonded together, thanks to a marvelous paint job. 
When I have time, I'll work on doing this. Big ferrite chokes on power 
leads may help some too -- study the applications note on ferrites on my 
website to understand their use at HF. 

I would also check the ARRL website and the mobile email list for 
additional info/advice. 


Jim Brown K9YC

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