[Heathkit] DX-100B questions / problems

[Rick Poole]

I have had no luck in locating my manuals for the DX-100B and the 
SB-10.  A couple of people on this reflector very kindly emailed me 
copies of the mods.dk manual for the DX-100 (non-B), but 
unfortunately large portions of that manual, including virtually the 
entire construction section, are missing... and anyway the DX-100 has 
a lot more differences from the DX-100B than I thought.

So I hope it's OK with you guys if I ask some RTFM-type questions... 
I will be ordering another manual but it'll be several days before it 
gets here.

My problem is that I can't get any output.  I hooked up a dummy load, 
turned on the transmitter, set Drive and Driver to zero and Plate to 
mid-scale, then turned on the Plate switch and hit the key.  I get an 
indication on the meter with the switch set to the Driver position, 
an indication that changes with the setting of the Drive control, but 
that is all... no grid current, no plate current, no output.

I'm told, I think by somebody on this reflector, that one big 
difference in the DX-100B is that it is specifically set up to use 
with the SB-10 sideband adapter.  On the back apron are three coax 
connectors, two of which are labeled "Out to SB-10" and "In from 
SB-10", and an octal accessories socket that also connects to the SB-10.

I do have an SB-10 but do not plan to use it with the DX-100B, at 
least not any time soon... my plans for this rig changed a bit since 
I bought it and for now all I want is something on 160- and 75-meter 
AM and CW.  So I don't have the SB-10 adapter connected at all.  Is 
there something I need to do to compensate for that, like maybe some 
jumpers in the octal plug that goes to the adapter, or a coax jumper 
between the "Out to SB-10" and "In from SB-10" connectors on the back?

Also, another question... There is a piece of heavy wire that runs 
from the Driver variable capacitor, through a grommeted hole in the 
PA shield, and then runs over to the space between one of the 6146's 
and one of the transformers (the modulation transformer, I 
think)  There it stops, with the end hanging in free air, and doesn't 
connect to anything, and isn't anywhere near anything that looks like 
it should connect to.  Is that some kind of neutralization gimmick or 
something?

Like I said, all RTFM-type questions... wish I could find my "TFM" so 
I could "R" it... :-(

Rick WA1RKT