[Kenwood] ts 520

[G. Doughty]

Ok, I am starting to figure this out.  Using a dummy load, I am finding
that my drive knob is sticking.  To adjust ALC, I am having to turn the
drive knob, which is very difficult to turn, all the way to one side or
the other.  Once I do get max deflection, I find that the needle bleeds
off and doesn't stay in place.  Even while adjusting carrier knob.
Sometimes it works for a while, others, I get one cq out and nothing.
Is the tight drive knob that does not maintain ALC a common problem?

Again, thank you for all your help.  I love this rig and do not want to
have to return it.

G. Doughty


-----Original Message-----
From: mark kenward [mailto:k8vf_mark at m33access.com] 
Sent: Saturday, April 16, 2005 10:51 PM
To: G. Doughty
Subject: Re: [Kenwood] ts 520

TRY TUNING UP THE RIG THIS WAY.


Follow these steps EXACTLY.


1) Meter in ALC...mode in tune....send......peak the drive.(you may have
to
adjust carrier to keep it on the scale)

2) meter in  ip......mode cw......send.......dip plate control.   If not
enough current showing, or too much you need to adjust carrier now to
keep
it around 200 milliamps.  (you can do this sending  with the mic, or by 
putting rig
in vox and using key......if key is plugged in, you must use key.)


3)  meter in rf......mode cw......send(same as above re
key)..........alternately peak load and plate control....plate control
last.


4) switch meter to ip, and check plate currrent...adjust to   200 mils
or so
with carrier control.



All done. Very easy, but Kenwood manuals for 520/599/820/830/530/  all
had
it screwed up.



Remember, you can tune this rig up into just about ANY antenna....as
long as
you get a dip in the plate control, you are fine.   I never use an
antenna
tuner with this rig as the pi network in the rig is a built in
tuner...AS
LONG AS YOU GET A DIP IN THE PLATE CONTROL, YOU ARE OK    DONT SWEAT THE
SWR 
IF YOU GET A DIP..

Let me know how it tunes, now, ok?

Mark
K8VF



----- Original Message ----- 
From: "G. Doughty" <ki4bbl at cox.net>
To: <kenwood at mailman.qth.net>
Sent: Saturday, April 16, 2005 4:17 PM
Subject: [Kenwood] ts 520


>
> Hello to all,
>
>
>
> Well, here I am again with a great old kenwood rig (which by the way I
> have wanted for a long time.)   This is, however, not my first.  The
> first was an 820 that was DOA.  Inspected by Kenwood East (two blocks
> from QTH) and they said it hasn't worked in awhile.  Sent it back to
> owner.  Now I have a 520 ( I am a sucker for tubes and knobs HI HI!!)
> and it appears to have some problems.  No real output is the first
> problem.  What I mean by real is that there is some after tuning plate
> and drive but only when I key down the mic in cw mode.  Then SWR is
off
> the charts.  I have a couple of questions regarding theory of
operation
> for this rig and then I will post a question I proposed to the
> boatanchor newsgroup.
>
>
>
> When tuning plate and Drive, or is it load, baby is sleeping in radio
> room so I can't check right now.  Anyways, does the knob need to be
> close to the band I am using?  i. e. 7,14, 28 etc.
>
>
> Does the receiver always need to be tuned? And why?
>
>
> I have done all the normal things, checked screen plate switch in the
> back, standby switch, CAR knob, mic gain, etc.  I also have an issue
> with antenna tuning:
>
>
>
> I notice that when I tune the rig, if I key down my mic when in cw
mode,
> I get some output (neglegible, but pwr nonetheless) but my swr is off
> the scale.  I have a loaded alpha-delta 40m dipole in the attic fed
with
> coax as well as a standard 20m dipole in the attic.  How do I tune the
> rig then tune the antenna?  I do not have a dummy load yet but with my
> last rig, tuning output was but 3 watts. (A very low power lid I
guess,
> sorry)  Now that I have 100 watts, I may need to purchase a roller
> inductance tuner i.e. mfj-969.  Any suggestions welcome.
>
>
>
> Thanks
>
>
>
> G. Doughty
>
> Ki4bbl
> G. Doughty
>
>
>
>
> ______________________________________________________________
> Kenwood mailing list
> Home: http://mailman.qth.net/mailman/listinfo/kenwood
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:Kenwood at mailman.qth.net
>
>