[OZAPRS] Tiny Trak problem

Richter, Mike W Michael.Richter at team.telstra.com
Mon May 31 10:13:33 EST 2004


Rob
 
The leads going in to the PIC chip have NO FILTERING AT ALL on the Tiny
Trak - so you have an aerial connected directly to an IC lead.
 
Clamp on ferrites provide limited filtering at hf.
 
I suggest adding a Series resistor or inductor BEFORE the filter
capacitor.
 

Mike VK2BMM

 

 -----Original Message-----
From: Robert Thirkettle [mailto:rob.thirkettle at canterbury.ac.nz]
Sent: Monday, 31 May 2004 09:56 am
To: ozaprs at marconi.ics.mq.edu.au
Subject: RE: [OZAPRS] HF Bands.



Hi All

        I have a major problem with getting my Tinytrak to work on 10 MHz
has any body had similar problems. I am sure the problem is RF getting
into the Tinytrak and corrupting the settings. I have my Tinytrak mounted
in a metal die cast box RF bypass capacitors on all inputs and outputs
plus clamp on ferrites around all the leads. My setup is a IC 706 and AH4
ATU plus whip It all works fine on all bands but 10 MHz.

 

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