Topband: Antenna terminations

Shoppa, Tim tshoppa at
Tue Mar 12 07:45:12 EDT 2013

Heat shrink squeezes resistor. Squeezing a carbon composition resistor will decrease its resistance. Film and ceramic resistors much less affected. Remember when we were kids and played with telephone carbon microphone elements?

Tim N3QE

----- Original Message -----
From: Bruce [mailto:k1fz at]
Sent: Monday, March 11, 2013 06:43 PM
To: topband at <topband at>
Subject: Re: Topband: Antenna terminations

Anyone else found a lowering of resistance after heat shrinking terminations 
after cool down?


You may have some of that somewhat conductive heat shrink tubing.  Good idea 
to check the glue for conductivity before use.

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Topband Reflector

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