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@gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec@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@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@gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec@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@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@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@ptt.rs> wrote:
Barry N1EU <barry.n1eu@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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