[R-1051] R-1051

[Larry Kirkland]

Cecil,
You are right about the other motor.  I cannot hear it running after the 
RF deck motor stops.  I will check it out and let you know.
73's
Larry W4LK

Cecil Acuff wrote:

> The problem is you have a stalled motor in the Mhz synthesizer module 
> of the six pack.  There are two motorized things in the radio...one 
> the turret in the RF deck...easy enough to check...you can watch it go 
> round and round. The other is not so easy...it's a motor driven 
> crystal oscillator switch. If the motor stops you will only get one 
> band to function.
>
> When you tune the Mhz on the front panel in one direction the RF deck 
> moves only one step if you move the knob the other direction the RF 
> deck runs much longer to do a full rotation.  Turn the knob the 
> direction the direction that results in single steps and after it 
> stops you should hear the crystal switch motor running for a few 
> seconds after the RF decks stops.  If you don't hear it that confirms 
> the motor problem.  The only problems I have seen from code generator 
> is where the thing either stops on the wrong frequency or won't stop 
> the motors at all.  The code generator and encoder switches in the Mhz 
> module of the sixpak and the base of the RF deck form open seeking 
> circuits.  I've had one of the metal bushings that separates the 
> layers in the code generator short against a trace on one of the 
> circuit boards resulting in no right answer from the encoders so it 
> would just spin the motors until you turned it off or selected the one 
> frequency that shorted that trace anyway.
>
> I think your problem is a stalled motor....
>
> Good Luck
>
> Cecil...
> ----- Original Message ----- From: "Larry Kirkland" <lkirkland at sc.rr.com>
> To: "R-1051 Discussion Group" <r-1051 at mailman.qth.net>
> Sent: Monday, June 12, 2006 8:32 AM
> Subject: [R-1051] R-1051
>
>
>> I have been working on a R-1051B here that I got recently.  It works 
>> only on the 4 MHz range.  The code generator switch A2A7 is putting 
>> out a tune relay ground on all ranges but the 4 MHz range.  I have 
>> checked the other outputs of the code switch and they are correct.
>>
>> Is it advisable to disassemble the code generator to look for the 
>> fault? The manual says it is not field reparable and offers no other 
>> info about the device.
>>
>> Thanks,
>> Larry W4LK
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>
>
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