[OZAPRS] Bad signal on 30m

[Terry Neumann]

Richter, Mike W wrote:


Getting RF Feedback using a TinyTrak should not be a surprise - the

inputs and outputs go direct to the chip without ANY form of filtering -

I suggest putting a 1k resistor in series and a 0.01uF to ground on all

pins that run off the board. 



Mike VK2BMM

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G'day Mike and others,

This is good advice.   I went even further as I thought (perhaps in the
wrong direction).   I used minature rf chokes (from Jaycar) on all the
significant in/outputs from the board, and built mine TT3 board  into a
diecast box as well.

This unit has been used in both of our vehicles on 30 metres and on 2
metres and appears to be free of  RF issues - so far. 

It may have been overkill, but I'm a farmer, and agricultural engineering
principles invariably find their way into all situations 8-)

Is there any merit in using rf chokes as opposed to using resistors, or
vice versa??

Regards,
Terry VK5ATN


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