K3/KPA500 with a MFJ-994B AUTO TUNER

[John KLim]

Hi

 

Is anyone using a "MFJ-994B AUTO TUNER 600W 1.8-30 MHZ" with an Elecraft
k3/KPA500?  I would like to know how they are working together.

 

Thanks in advance.

 

73 ES CUL DE N3KHK

===============================================

John R. Klim II

ARRL LM, AMSAT LM

10-10:  68135

30MDG:  1820

QSL:  LoTW, Bureau, Direct, eQSL as a courtesy

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[w0mu]

I use the LDG AT600 pro and it works fine.  I avoid MFJ if I can.  Some
stuff is fine other stuff is well....not.

If you have not purchased one you might consider waiting for the KAT500
that Elecraft is working on.

Mike W0MU

J6/W0MU November 21 - December 1 2011 CQ WW DX CW
W0MU-1 CC Cluster w0mu.net


On 10/22/2011 4:10 PM, John KLim wrote:

> Hi
>
>
>
> Is anyone using a "MFJ-994B AUTO TUNER 600W 1.8-30 MHZ" with an Elecraft
> k3/KPA500?  I would like to know how they are working together.
>
>
>
> Thanks in advance.
>
>
>
> 73 ES CUL DE N3KHK
>
> ===============================================
>
> John R. Klim II
>
> ARRL LM, AMSAT LM
>
> 10-10:  68135
>
> 30MDG:  1820
>
> QSL:  LoTW, Bureau, Direct, eQSL as a courtesy
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Phil Salas]

I currently have a K3/KPA500/MFJ998 set-up.  I used a MFJ-994B with an
ALS-600 for several years.  A couple of years ago I upgraded to a MFJ-998 as
it has a built-in amp-disable feature when tuning.  I do like these
autotuners and I have reviews of both in the "Product Review" section of my
website at www.ad5x.com.  To me, the disadvantage of the MFJ tuners is that
they do not work on 6-meters and the bypassed SWR of the tuners is high on
6-meters.  Therfore you must completely physically bypass the MFJ tuners
when operating on 6-meters (I do this with antenna switches).

Phil - AD5X

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[KEN SIROIS]

de KF1C

Running K3 w/ ALS-600 Mfj-994B in a plastic box at base of 43ft vertical / and
99 ft inverted L.

Fed against 2 above ground radials 135 ft long and 2 65 ft long. (also 5 or 6 60
ft  buried)  
Inside the shack 100 ft of coax make not much differance on these readings, I
spent allot of time back and forth.

I have line isolators in line (both coax and ferrite ) so I know its not rf on
the shield causing the trips.

994B loses lock and trips the amp above the following readings.
The 994B does not have a wide matching range like the 998 if you read the specs.

I am waiting for the KAT-500 to come out.

43 ft vertical
994B handles 500 watts 10m 12m 15m 17m 20m
994B handles 200 watts 30m and 40m
994B handles    50 watts on 80m

Inverted L 99 ft

994B handles 500 watts 10m 12m 15m 17m 20m 40m
994B handles 75 watts 80m and 160m  

Both Inverted L and 43ft vertical connected.

994B handles 500 watts 10m 12m 15m 17m 20m 40m
994B handles 200 watts 80m and 160m  

I'm going to extend the L to quarter wave on 160m soon, that should (hopefully)
allow full power on 80m
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html