[TenTec] Orion 565 tuning encoder

[Bob McGraw - K4TAX]

Barry, I do not recall the brand.  The one I opened and repaired is in a bag 
at the shop.  As I think about it, most probably not the type and style used 
for the VFO encoders.  They are likely a bit more rugged than the one used 
for the MULTI function in the Eagle.  Anyway, I figure I might need a spare 
one of these days.

It was a good learning experience.

73
Bob, K4TAX




----- Original Message ----- 
From: "Barry N1EU" <barry.n1eu at gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Saturday, June 21, 2014 6:37 PM
Subject: Re: [TenTec] Orion 565 tuning encoder


> Bob, did you open an Oak Grigsby encoder?  It appears to be completely
> sealed.
>
> Barry N1EU
>
>
> On Sat, Jun 21, 2014 at 10:41 PM, Bob McGraw - K4TAX <RMcGraw at blomand.net>
> wrote:
>
>> Shouldn't the two outputs be 90 degrees quadrature?  "A" leads "B" in one
>> direction and "B leads "A" in the opposite?  I seem to think so.  I had 
>> to
>> replace the MULTI encoder in my Eagle and I seem to recall it worked this
>> way.
>>
>> I actually opened the original one, cleaned it, put it back together and
>> it works. I don't advise this however, unless you have a lot of spare 
>> time
>> with nothing to do, good illumination and steady hands under good
>> magnification.
>>
>> 73
>> Bob, K4TAX
>>
>>
>> ----- Original Message ----- From: "Barry N1EU" <barry.n1eu at gmail.com>
>> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
>> Sent: Saturday, June 21, 2014 1:59 PM
>> Subject: Re: [TenTec] Orion 565 tuning encoder
>>
>>
>>
>>  After hooking up a scope, I think the encoder is bad.  I'm seeing 
>> negative
>>> going pulses on the A pin but not seeing positive going pulses on the B
>>> pin.
>>>
>>> Barry N1EU
>>>
>>>
>>> On Sat, Jun 21, 2014 at 6:41 PM, Barry N1EU <barry.n1eu at gmail.com> 
>>> wrote:
>>>
>>>  I measure 4.9V on the A9 board.  I flipped the rig over and now I'm
>>>> measuring 4.3V on the encoders (?!).  Not sure what's going on.  vfoA
>>>> encoder is still working fine.
>>>>
>>>> Barry N1EU
>>>>
>>>>
>>>> On Sat, Jun 21, 2014 at 6:34 PM, Barry N1EU <barry.n1eu at gmail.com>
>>>> wrote:
>>>>
>>>>  I measure 4.63V on both tuning encoders.  And both encoders work on 
>>>> the
>>>>> A
>>>>> cable, so it doesn't seem like that would explain it.  But I'll poke
>>>>> around
>>>>> the A9 board.  I replaced all the A9 capacitors a few months ago.
>>>>>
>>>>> Thanks & 73,
>>>>> Barry N1EU
>>>>>
>>>>>
>>>>> On Sat, Jun 21, 2014 at 5:23 PM, shristov <shristov at ptt.rs> wrote:
>>>>>
>>>>>
>>>>>> Barry N1EU <barry.n1eu at gmail.com> wrote:
>>>>>>
>>>>>> > Thanks Sinisa.  vfoB would not tune at all.
>>>>>>
>>>>>> I had the same problem.  VFO B encoder had a supply voltage of only
>>>>>> 4.66
>>>>>> V.
>>>>>> After tightening 4 fixing screws on the A9 board, the voltage at
>>>>>> encoder
>>>>>> rose to 4.77 V
>>>>>> and it started workig.
>>>>>>
>>>>>> 73,
>>>>>>
>>>>>> Sinisa
>>>>>> _______________________________________________
>>>>>> TenTec mailing list
>>>>>> TenTec at contesting.com
>>>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>>>>
>>>>>>
>>>>>
>>>>>
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