[CQ-Contest] (CDE) HamIV Controller

Dave Hachadorian K6LL at ARRL.net
Fri Jun 13 10:11:55 EDT 2008

You might do better posting this on the towertalk reflector.

Can you, and did you, calibrate the meter by pushing the CAL 

What is the voltage across terminals 3 and 7? It should be 
13 VDC. The zener you mentioned is the regulator in the DC 
power supply for the meter circuit.

Dave Hachadorian, K6LL
Yuma, AZ

----- Original Message ----- 
From: "AD5VJ Bob" <rtnmi at sbcglobal.net>
To: "CQ Contest" <cq-contest at contesting.com>
Sent: Friday, June 13, 2008 2:30 AM
Subject: [CQ-Contest] (CDE) HamIV Controller

> The meter on my CDE (HamIV) Controller will only read 
> between the N in the middle and the S on the left hand 
> side, it will not move
> to the S on the right side of the meter or past the N in 
> the middle to the right.
> The rotor is turning all the way around and the resistance 
> measurements on the leads are good according to the 
> manual.
> There is a diode VR1 (on schematic) that has a reading of 
> POS 5.32 VDC volts on it's cathode and MINUS 6.94 VDC on 
> it's anode, the
> schematic in the manual says it should have POS 13VDC on 
> the cathode, therefore I am suspecting it is a Zener and 
> it is bad, (it is
> not shown in the parts list) although my experience with 
> Zeners is they are good or they are bad, does anyone have 
> experience with
> this issue with a Ham IV controller?
> Power supply voltage off of the controller xfmr is 24VAC 
> so this is correct.
>   73 fer nw es gud DX,
> Bob AD5VJ
> http://www.ad5vj.com/
> Old Calls WB5ZQU, WY5L/KH3, KE5CTY, N5IET
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