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Yaesu FT101ZD MkII realignment
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Guy G4DWV 4X1LT
Sep 6, 2017, 3:05:09 AM9/6/17
to
Hi,
Does anybody know of somebody in the UK who is experienced in
realigning Yaesu
rigs, particularly the FT101MD MkII? It is not something that I can do
as I do not have the necessary
test equipment. It would be reassuring to know that all is well in
that department before I start my refurbishment.
Sri if this is OT for the group.
Mni tnx es 73 de Guy G4DWV 4X1LT
--
73 de Guy G4DWV/4X1LT
Does anybody know of somebody in the UK who is experienced in
realigning Yaesu
rigs, particularly the FT101MD MkII? It is not something that I can do
as I do not have the necessary
test equipment. It would be reassuring to know that all is well in
that department before I start my refurbishment.
Sri if this is OT for the group.
Mni tnx es 73 de Guy G4DWV 4X1LT
--
73 de Guy G4DWV/4X1LT
Stephen Thomas Cole
Sep 6, 2017, 4:36:43 PM9/6/17
to
Guy G4DWV 4X1LT <no-e...@tardis.com> wrote:
> Hi,
>
> Does anybody know of somebody in the UK who is experienced in
> realigning Yaesu
> rigs, particularly the FT101MD MkII? It is not something that I can do
> as I do not have the necessary
> test equipment. It would be reassuring to know that all is well in
> that department before I start my refurbishment.
I've used Fraser Stuart (Stuart Electronics) in Herne Bay for a service of
> Hi,
>
> Does anybody know of somebody in the UK who is experienced in
> realigning Yaesu
> rigs, particularly the FT101MD MkII? It is not something that I can do
> as I do not have the necessary
> test equipment. It would be reassuring to know that all is well in
> that department before I start my refurbishment.
my old Yaesu 757, so he might be worth contacting. He's very good, and very
reasonably priced!
http://stuartelectronics.co.uk
--
STC / M0TEY /
http://twitter.com/ukradioamateur
Guy G4DWV 4X1LT
Sep 7, 2017, 2:41:35 PM9/7/17
to
On 6 Sep 2017 19:48:00 GMT, just as I was about to take a herb,
Stephen Thomas Cole <use...@stephenthomascole.com> disturbed my
Stephen Thomas Cole <use...@stephenthomascole.com> disturbed my
reverie and wrote:
>I've used Fraser Stuart (Stuart Electronics) in Herne Bay for a service of
>my old Yaesu 757, so he might be worth contacting. He's very good, and very
>reasonably priced!
Thanks for the tip. I have him bookmarked.
>I've used Fraser Stuart (Stuart Electronics) in Herne Bay for a service of
>my old Yaesu 757, so he might be worth contacting. He's very good, and very
>reasonably priced!
Guy G4DWV 4X1LT
Sep 7, 2017, 2:42:44 PM9/7/17
to
On Thu, 7 Sep 2017 11:02:00 -0000 (UTC), just as I was about to take a
herb, Brian Reay <no...@m.com> disturbed my reverie and wrote:
>Unless you have reason to believe it has been 'got at', it probably doesn't
>need a full alignment. I don't recall the 101ZD manual from memory but the
>YAESU manuals of that period (just the supplied instruction book) generally
>include details on how to check and adjust the basics of the Rx and Tx,
>often with no more than a multimeter and the internal calibrator (if there
>is one). Even things like neutralising PA valves, when appropriate, was
>covered, and wasn't difficult. The Rx IF is unlikely to go 'of', unless
>someone has 'tweaked' it or something has failed. Run through the checks in
>the instructions and try it on air. If the output power is OK, and someone
>localish can check for splatter, and you can check for out of band
>emissions, that is all a workshop would do- other than using a spectrum
>analyser.
>
>On the Rx side, a bit of listening and comparison should tell you if all is
>basically Ok. Not quite as good as a workshop but you will learn more and
>save a bit.
>
>When you visit, you can bring it and use my test equipment, if you like.
Oy vey! All those money-saving tips! The rig does have crystals for CB
so it has been modified in some stage by somebody who could not have
known their arse from their elbow, to be a tad technical. I will have
another read of the manual and see what bits I can do myself.
herb, Brian Reay <no...@m.com> disturbed my reverie and wrote:
>Unless you have reason to believe it has been 'got at', it probably doesn't
>need a full alignment. I don't recall the 101ZD manual from memory but the
>YAESU manuals of that period (just the supplied instruction book) generally
>include details on how to check and adjust the basics of the Rx and Tx,
>often with no more than a multimeter and the internal calibrator (if there
>is one). Even things like neutralising PA valves, when appropriate, was
>covered, and wasn't difficult. The Rx IF is unlikely to go 'of', unless
>someone has 'tweaked' it or something has failed. Run through the checks in
>the instructions and try it on air. If the output power is OK, and someone
>localish can check for splatter, and you can check for out of band
>emissions, that is all a workshop would do- other than using a spectrum
>analyser.
>
>On the Rx side, a bit of listening and comparison should tell you if all is
>basically Ok. Not quite as good as a workshop but you will learn more and
>save a bit.
>
>When you visit, you can bring it and use my test equipment, if you like.
Oy vey! All those money-saving tips! The rig does have crystals for CB
so it has been modified in some stage by somebody who could not have
known their arse from their elbow, to be a tad technical. I will have
another read of the manual and see what bits I can do myself.
Dave Sergeant
Sep 8, 2017, 4:47:18 AM9/8/17
to
In article <14u2rc19r6ot2i8gk...@4ax.com>, no-
em...@tardis.com says...
its day and unlike modern rigs very easy to maintain. Apart from
problems with the display module (which if it is faulty parts are now
NLA) I never had any issues that required major alignment. I think their
was an official mod to add 11m, I wouldn't worry too much about issues
related to that. In my case I added the later premix board to give me
full access to the WARC bands which did include adding an unofficial mod
in the form of an extra toggle switch on the front panel. I passed it on
some years ago to another amateur who has never complained of
anything...
There is sufficient information in the user manual (including full
schematics) for basic checks and the full service manual is readily
available online. They are reliable rigs, at least do the basic checks
before paying money for others to look at it which shouldn't be
necessary.
73 Dave G3YMC
em...@tardis.com says...
> Oy vey! All those money-saving tips! The rig does have crystals for CB
> so it has been modified in some stage by somebody who could not have
> known their arse from their elbow, to be a tad technical. I will have
> another read of the manual and see what bits I can do myself.
I used to have a 101ZD many years ago. It was a delightful rig to use in
> so it has been modified in some stage by somebody who could not have
> known their arse from their elbow, to be a tad technical. I will have
> another read of the manual and see what bits I can do myself.
its day and unlike modern rigs very easy to maintain. Apart from
problems with the display module (which if it is faulty parts are now
NLA) I never had any issues that required major alignment. I think their
was an official mod to add 11m, I wouldn't worry too much about issues
related to that. In my case I added the later premix board to give me
full access to the WARC bands which did include adding an unofficial mod
in the form of an extra toggle switch on the front panel. I passed it on
some years ago to another amateur who has never complained of
anything...
There is sufficient information in the user manual (including full
schematics) for basic checks and the full service manual is readily
available online. They are reliable rigs, at least do the basic checks
before paying money for others to look at it which shouldn't be
necessary.
73 Dave G3YMC
Brian Reay
Sep 8, 2017, 8:50:30 AM9/8/17
to
On 08/09/17 07:10, Dave Sergeant wrote:
> In article <14u2rc19r6ot2i8gk...@4ax.com>, no-
> em...@tardis.com says...
>> Oy vey! All those money-saving tips! The rig does have crystals for CB
>> so it has been modified in some stage by somebody who could not have
>> known their arse from their elbow, to be a tad technical. I will have
>> another read of the manual and see what bits I can do myself.
>
> I used to have a 101ZD many years ago. It was a delightful rig to use in
> its day and unlike modern rigs very easy to maintain. Apart from
> problems with the display module (which if it is faulty parts are now
> NLA)
Display modules tend to be the 'weak link' when it comes to older
> In article <14u2rc19r6ot2i8gk...@4ax.com>, no-
> em...@tardis.com says...
>> Oy vey! All those money-saving tips! The rig does have crystals for CB
>> so it has been modified in some stage by somebody who could not have
>> known their arse from their elbow, to be a tad technical. I will have
>> another read of the manual and see what bits I can do myself.
>
> I used to have a 101ZD many years ago. It was a delightful rig to use in
> its day and unlike modern rigs very easy to maintain. Apart from
> problems with the display module (which if it is faulty parts are now
> NLA)
radios. Many uses some kind of gas discharge display and were specials.
The only source now would be a 'donor' radio.
I've seen various modifications for some radios which 'intercept' the
drive signals and substitute an alternative- typically an array of 7
segments etc. (perhaps with a few extra LEDs for special items) but it
really depends on the radio.
The later generation of radios, while in someways better in terms of
longevity hopefully, are even more reliant on custom or customised
components which, in time, will be all but impossible to source.
lordgnome
Sep 8, 2017, 10:56:33 AM9/8/17
to
On 08/09/2017 11:43, Brian Reay wrote:
> The later generation of radios, while in someways better in terms of
> longevity hopefully, are even more reliant on custom or customised
> components which, in time, will be all but impossible to source.
>
It is not just our stuff. I have seen a good deal of commercial stuff
> The later generation of radios, while in someways better in terms of
> longevity hopefully, are even more reliant on custom or customised
> components which, in time, will be all but impossible to source.
>
junked, simply because the eprom has lost some memory!
Brian Reay
Sep 8, 2017, 11:38:43 AM9/8/17
to
I recall some work on uVEPROM data retention in the mid 80s, when it was
(believe it or not) THE mass storage medium for digital maps in
aircraft. I can't recall the details but I'm sure the conclusion was
that the data wouldn't 'fade' during the service life- which was more
than good enough as the databases would be updated numerous times in
that time.
It is interesting to look back on those times, the effort expended in
trying to 'compress' map data was immense in order to save memory.
People look at in Car nav systems and think nothing of having maps for
the whole of, say, Western Europe today yet, back then, it was difficult
to cover the UK with decent aeronautical charts, DTED, and DFOD data.
Dave Sergeant
Sep 8, 2017, 2:10:11 PM9/8/17
to
In article <oots8c$pde$2...@dont-email.me>, no...@m.com says...
inside the module which is a custom NLA device, I had to replace it on
mine when I first got it. But if the display is working (and displaying
the correct frequency) it is not a problem.
Most faults are likely to be in the PA area (maybe worn 6146s)and power
supply. The mains transformer is also known to fail, probably BER if
that has happened.
73 Dave
> Display modules tend to be the 'weak link' when it comes to older
> radios. Many uses some kind of gas discharge display and were specials.
> The only source now would be a 'donor' radio.
>
>
The 101ZD uses normal 7 segment LEDs. The weak point is the counter chip
> radios. Many uses some kind of gas discharge display and were specials.
> The only source now would be a 'donor' radio.
>
>
inside the module which is a custom NLA device, I had to replace it on
mine when I first got it. But if the display is working (and displaying
the correct frequency) it is not a problem.
Most faults are likely to be in the PA area (maybe worn 6146s)and power
supply. The mains transformer is also known to fail, probably BER if
that has happened.
73 Dave
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