[Boatanchors] Lysco Antenna Loading

[Bill Stewart]

Tnx Perry and Brian for suggestions and info. So far have added
external caps, fixed and variable, both in series and parallel
to gnd and no improvement (40m ok w/o help...but added capacitance
did give a few more ma above 100 or so). I am wondering if they may
have intended it to either drive an amp direct or use the Model 50
coupler, which connects to a single wire fed antenna. The 'manual'
does say it is designed to operate into a 50 ohm imped. to ant. or
PA. Also says if operated into a long wire ant, it is suggested to
use the Mod. 50. I have the Mod. 50 so may string up a 100 or so
foot of wire and see what it does with the coupler. I will also
continue to cobble up a large amt of capacitance to hang off the
output. I also have the 250w Johnson Match box, which I can try. 
Plenty of items to work with. Tnx agn and the Lysco will live on
even if only on 40.
...73 de Bill K4JYS


----- Original Message -----
From: w8au at sssnet.com
To: "Bill Stewart" <cwopr at embarqmail.com>, "boatanchors" <boatanchors at mailman.qth.net>
Sent: Monday, June 12, 2017 3:19:16 AM
Subject: Re: [Boatanchors] Lysco Antenna Loading

At 07:54 PM 6/11/2017, Bill Stewart wrote:
>Is anyone using a Lysco xmtr? If so, just wondering what you do
>for antenna loading. I am using a 80/40m dipole, coax fed, and
>on forty can get a good dip at 100ma and a bit higher as I go up
>freq from 7050kc. On 80m can only get about 25ma max. I haven't
>tried the 160m inv. L yet, but will try that in a day or two. Would
>some type tuning network help? Tnx for any comments.

Bill:  The Lysco rigs used a low Z tap off the plate tank coil.
         Lysco also made L/C antenna tuners to help their rigs
         tune random loads.

         I would recommend a transmatch to help you with
         your 80M situation.  You might also check your
         antenna with an analyzer.  Lastly, there may be a
         problem with one of the bandswitch wafers that
         change the tap for each band.

         If you have not yet looked at the 807 amplifier section
         underneath the chassis, this is where the two plate
          tank coils are.  One is for 160/80 and the other is
          for 40 through 10.  If your amp stage has overheated
          at any time during the last 66 years, the tank coil stock
          may have sagged, causing a problem.

          Keep the Lysco going... it was a unique rig for it's
          time. And you can't beat that huge dial.  :-)

Perry    w8au