[TenTec] Orion 565 tuning encoder

[Bob McGraw - K4TAX]

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
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>>>>
>>>
>>>
>>
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