As I recall, it is the two middle pins above and below each other, with 
a ten k, you're fairly safe.
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Tue, 9 Dec 2014, Steve Dresser wrote:

> I don't want to start poking around that plug unless I know exactly where
> and what to poke.  Modern electronic equipment is very unforgiving if you
> make a mistake.
>
> Right now, I use PF1 for tuning, but it would be nice not to have to do it
> that way.
>
> Steve
>
> ----- Original Message -----
> From: "Steve Forst" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: December 09, 2014 11:45
> Subject: Re: Antenna Tuners
>
>
>> Steve,
>>
>> I don't have this documented anywhere.  I wish I had saved it when I saw
>> it years ago on one of the lists.   I think it was the TS-2000 list.
>>
>> My recollection is that it is a high value resistor (10k???) between the
>> 2 middle pins of the 6 pin molex on the radio.
>>
>> I've never  had need to do this, but my understanding is that this will
>>  disable the internal tuner on any of the Kenwood radios that use the 6
>>  hole molex.
>>
>> Of course, with the 590, you could set a pf key  to do the TX tune thing.
>>
>> I would want to confirm this from another source before  shoving
>> resistors into little holes.
>>
>> 73, Steve KW3A
>>
>> On 12/9/2014 11:07 AM, Steve Dresser wrote:
>>> Steve,l
>>>
>>> That resistor workaround sounds like a good idea for me since I never use
>>> the internal tuner.  Do you have more info on the workaround?
>>>
>>> Steve
>>>
>>> ----- Original Message -----
>>> From: "Steve Forst" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: December 09, 2014 08:27
>>> Subject: Re: Antenna Tuners
>>>
>>>
>>>> Hi Dave,
>>>>
>>>> I am using the notorious MFJ-998. Had mine  six and a half years with no
>>>> issues or problems.   Even back then, there were  reports of QC
>>>> problems, so I did something I would usually never do.  I bought a demo
>>>> unit from a dealer.   I figured if it was going to fail, it would have
>>>> failed in use at the dealers.  It came with a very steep discount on
>>>> price, but also had the full factory warranty.    I took a gamble and
>>>> for once in my life it paid off.
>>>>
>>>> With the optional cable, it interfaces to the 6 pin molex on the radio.
>>>>    Hitting the tune button on the radio puts the radio into a low power
>>>> CW carrier, tunes the tuner, then returns  the radio to original
>>>> mode/power.
>>>>
>>>> Recently,with the Hex, and 30 meter GP, I only need it on 160-40 meters.
>>>>      The tuner won't load my dipole above 1.880, but  no problem since
>>>> all the action is lower.   Probably need some antenna adjustment.
>>>>
>>>> It's rated at 1.5 kw, but I've only put 1 k into it.   I think some on
>>>> the list may be using the MFJ-993 (300 watts) and the MFJ-994 (600
>>>> watts) with similar interface to the radio.
>>>>
>>>> The LDG 1000 is nice, but is limited to 1kw on SSB and 750 watts CW.
>>>> It does cover 6 meters (the MFJ doesn't), but doesn't interface with the
>>>> radio.    You could set a pf key to do TX Tune:  hit the pf key,the
>>>> radio goes to cw low power, then hit the tune on the tuner to do the
>>>> tune, then hit the pf key again to  exit TX tune and revert to original
>>>> mode/power.
>>>>
>>>> There is also a work around to disable the internal tuner with a
>>>> resistor in the  molex jack so  you wouldn't have to use the pf key.
>>>>
>>>> If you've been a very good boy, maybe Santa would bring you a Palstar
>>>> Auto.    Instead of relays like the MFJ and LDG, the Palstar uses motors
>>>> to  turn real variable caps and a roller inductor.    It's around $1,500
>>>> and has menus and a display.  Not sure how accessible it is.   I don't
>>>> really remember if I needed any sighted help getting the MFJ-998 up and
>>>> working, but  I've been on my own for the last 5 years and haven't
>>>> needed to monkey with it.
>>>>
>>>>
>>>> Hope this long winded discourse was of some help.
>>>>   You still have a few weeks to get your chimney swept out.   You don't
>>>> want soot on your new toy.
>>>> 73, Steve KW3A
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On 12/9/2014 12:27 AM, Dave Basden wrote:
>>>>> Hi Steve,
>>>>>
>>>>> I'm thinking of asking Santa for an automatic tuner.  I see that the
>>>>> MFJ
>>>>> 998 interfaces with Kenwood rigs, but the reviews on the MFJ 998 on
>>>>> Eham
>>>>> suggest a real quality control problem.  What are you using and how
>>>>> easy
>>>>> is it to use with the TS-590?
>>>>>
>>>>> 73,
>>>>>
>>>>> Dave, W7OQ
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>>
>>
>
>