[222mhz] Re: 222mhz mobiles, & TSU-6

[Budd Turner]

New transcievers for 222 MHz are too expensive for my budget.
There are still some good older/cheaper rigs floating around.
These are my personal observations of the Kenwood TM-631, Yaesu FT-311RM, 3 
Icom IC-37As, (which I have listed for sale on eHam & ARRL).

Kenwood Tx & Rx audio has always been great.  As an early, rudimentary dual 
band radio it is nice.
Duty cycle is 1 minute Tx, 3 minutes Rx...requiring addition of a fan like 
had to be done with all the IC-37As.  The small Yaesu heatsink seems to 
operate for extended periods, on high power, with only slight warming.  The 
Yaesu is my favorite for ease of setup and operation.
On air reports for the Yaesu & Icom have declared the Yaesu audio same as 
the Kenwood and much fuller than the Icom.  Comparisons say the Icom sounds 
flat with narrower bandwidth.
The IC-37a are notorious for the poorly designed voltage regulator circuit 
that overdrives and burns out the LED displays.  They also burn components 
and the controller board.  They have all been replaced with a more efficient 
and cooler circuit, designed & installed on a copper heatsink by WB6LCI, 
while replacing the displays with fully functional ones.
I have not encountered any long time ADI users or totally happy current 
owners.  I'm sure there are some out there and I do not want to start a 
Chevy vs Fords Flame war.  It would be great to learn of a reasonably priced 
new 222 radio.  This band shouldn't require the additional investment price 
of admission...although I gotta admit, it's nice to be in a quieter, less 
crowded neighborhood...

Re: TSU-6
I have been unsuccessful in my search for a TSU-6.

If I have said anything to upset anyone, please respond directly and not 
pollute the forum with Flames.
No offense is intended and apology is offered up front.

73

Budd Turner : N7EOJ
223.94 & 224.18 (resurrection mode)
Upper Sonoran Experimental Radio System
Tucson, AZ

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