[Amps] L4B Plate choke

[Jim Thomson]

Date: Thu, 5 Jan 2012 23:16:32 -0500
From: "Wayne Rogers" <n1wr at chesapeake.net>
Subject: Re: [Amps] L4B Plate choke

Carl:  I pretty much reached the same conclusion.  I ordered the Ameritron 
choke from MFJ.  I understand that it is a bit too long physically and needs 
to be shortened a bit (the form - not the coils).  We'll see.  Thanks for 
your note.

Wayne N1WR


##  I own  FOUR   L4B's.... and have not see this effect.  Then again, I don't run it
at 1500 w out on cw mode either.   The stock L4B choke is 154uh, which is more than plenty
for 80m [ it's triple the 50 uh  used in the heath SB-220].   It also works on 17+12m. 

##  dunno what ga wire drake used on the choke, but it's small stuff.  Watch out,
the plate xfmr is only rated for 850va CCS. 

later... Jim  VE7RF