[Kenwood] TS-830S Query

[peter markavage]

Yep, I was looking the RF choke that hangs off the output of the pi
network not the one carrying the HV to the 6146's. Anyway, since I have
"manual" access, I check 530, 520(all variations), 510, 900, and even
Yaesu FT-101ZD(also uses pair of 6146's). None of them list the actual
value of the choke. I don't have my ARRL Handbook handy, but I seem to
remember a section in some back copy, using a formula to compute what
inductance should be used, given plate impedance, frequencies, etc. Web
has lots of info on plate chokes. Surplus Sales has several different
varieties for sale. Of course, someone could take one out of their rig
and measure the inductance. Looking back into some of the Heath rigs that
used a pair of 6146's, the typical choke value was 1 MH at 500ma.
Pete, wa2cwa

On Mon, 17 Oct 2005 17:17:16 -0400 "Roger Borowski" <K9RB at bellsouth.net>
writes:
> The DISASSEMBLY on page 29 shows it as the Final Choke (L33-0635-05) 
> with no
> further details. It has the designator as L2 in the parts list. It 
> has been
> discontinued by Kenwood. East Coast Transistor still lists it but 
> has none
> in stock and will not get more.
> 
> I would think the Final Plate Choke for ANY transceiver running a 
> pair of
> 6146 final tubes from 160M through 10 Meters would work in this 
> application
> but it must be considered that the TS830S has the inclusion of the 
> WARC
> bands and whatever choke is used must not have a resonance on any of 
> the 9
> HF bands. Possibly the choke for the TS530, if a different part 
> number,
> would be a good substitute. Final Plate Chokes for the TS-820 or 
> TS-520
> series transceivers may also work but these rigs did not include the 
> WARC
> bands and should be grid-dipped for resonance's in the WARC bands 
> prior to
> installing one of these as a replacement and assuming it will work.
> 
> The original question of the value of Part # L33-0635-05 remains 
> unanswered.
> This is the choke that connects to the parasitic suppressor chokes 
> and plate
> caps of the 6146 tubes. It is clearly shown on pg. 29 of the service 
> manual
> in the "disassembly view".
> 
> -=Rog-K9RB=-
> 
> 
> 
> ----- Original Message ----- 
> From: "peter markavage" <manualman at juno.com>
> To: <Kenwood at mailman.qth.net>
> Sent: Monday, October 17, 2005 3:18 PM
> Subject: Re: [Kenwood] TS-830S Query
> 
> 
> According to the operating and the service manual schematics, it's 
> L5,
> 470 microhenries.
> 
> Pete, wa2cwa
> www.manualman.com
> 
> On Mon, 17 Oct 2005 10:34:48 -0400 "Roger Borowski" 
> <K9RB at bellsouth.net>
> writes:
> > Pass on the part number and I'll see what I can find out here. 
> I've
> > got lots
> > of bulletins and various publications on the 830S in my archives. 
> I
> > even
> > have a 830S sitting on the shelf here, but unfortunately no 
> service
> > manual,
> > but know a couple of guys who may have the service manuals in 
> hand.
> > One from
> > my complete original TS-830S + all accessories package I bought 
> new
> > in '80.
> > Just some looking around here and a couple of e-mails and I may 
> be
> > able to
> > find the information you are seeking.
> > -=Rog-K9RB=-
> >
> > ----- Original Message ----- 
> > From: "aborg" <a_borg at yahoo.com>
> > To: <Kenwood at mailman.qth.net>
> > Sent: Monday, October 17, 2005 10:21 AM
> > Subject: Re: [Kenwood] TS-830S Query
> >
> >
> >
> >
> > --- aborg <a_borg at yahoo.com> wrote:
> >
> > > No go, tried that and Kenwood east, west and the
> > > technical dept at Kenwood.org does not have a clue.
> > > I
> > > even gave them the actual part number. They don't
> > > have
> > > a clue and also acted liked they didn't care.
> > >
> > >
> > ******************************************************
> > >
> > > --- Roger Borowski <K9RB at bellsouth.net> wrote:
> > >
> > > > You can look it up at Kenwood Parts online through
> > > > their East and West Coast
> > > > parts distribution centers. Do a Google search for
> > > > "Kenwood Parts" to start
> > > > and that will get you there. 73, -=Rog-K9RB=-
> > > >
> > > > ----- Original Message ----- 
> > > > From: "aborg" <a_borg at yahoo.com>
> > > > To: <Kenwood at mailman.qth.net>
> > > > Sent: Monday, October 17, 2005 9:40 AM
> > > > Subject: [Kenwood] TS-830S Query
> > > >
> > > >
> > > > Does anyone know the value of the Kenwood TS-830S
> > > > final choke coil ?
> > > >
> > > >
> > > > Thanks in advance
> > > >
> > > > Mike-KK4MS
> > > > a_borg at yahoo.com