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KB2LJJ Radio Mods Database
User comment
Subject: radio fan mod fan noise
Comment on this fan mod.
I do not know how noisy the fan is in operation as I do not have this radio. Is it possible to have the fan on all the time? If so
remove q572, remove q571 & short the collector & emitter pads together (q571 only), this will cause the fan's zener diode to still
regulate at what looks like somewhere around 13.3 vdc.
This radio mod with 200ohm and milliamp current shouldnt need a 1 watt resistor. Seems like it is overkill. A 1/4 watt resistor
on the (removed) q 571 c/e pads could also serve to find the sweet speed - this way the fan is always on when the radio is on.
You could even rig something with a pot to have a manual fan speed this way.
But again I do not know how noisy the fan is. -KB1EQC
ICOM LDG interface and ICOM IC-706MKIIG
Author: -
Save some money and make your own interface between the LDG AUTO TUNER and the 706MKIIG or any other ICOM rig that
uses the AH-4
http://www.kb2ljj.com/data/icom/ic-706-MKII.htm (29 di 30)23/08/2009 23.05.07