[Drake] DRAKE L-4/L-7 Power Supply Board

[David Knepper]

I have a brand new Peter Dahl high voltage transformer for the L4/7 power
supply.

Anyone interested?

Thanks

David, W3ST
Publisher of the Collins Journal
Secretary to the Collins Radio Association
To Join the CRA go to www.collinsra.com
Nets:  3805 Khz, Monday/Wednesdays 8 PM EST and 14250 Khz Saturday, 12 Noon
EST

----- Original Message -----
From: <pulsarxp at earthlink.net>
To: <drake at mailman.qth.net>
Sent: Thursday, September 29, 2005 4:24 PM
Subject: [Drake] DRAKE L-4/L-7 Power Supply Board


>
>
> Anyone out there with a DRAKE L-4 or L-7 Amplifier should consider buying
a
> new power supply board from Mike Bryce of The Heathkit Shop.  I like some
> others have asked Mike to send me a free installation manual for his newly
> designed L-4/L-7 power Supply board.  (Mike just announced there was not
> enough demand for this board and consequently he has decided not do a run
> of the boards.  Mike told us we could ask him for a free copy of his
> installation instructions for this board).   I just read the manual and
> looked at the pictures of the board and immediately got excited and told
> myself I need 3 of them for my Drake amplifiers as an insurance policy.
>
> My Drake Amps work great but the filter caps are getting old and someday
> (soon or later) they will need filter replacements.  Of course the old
> style caps are hard to find especially fresh new units and cost an arm and
> leg when and if available.  Mike's newly designed board uses modern fresh
> and readily available caps plus the diodes and resistors are of modern
> design and in tolerance too.
>
> I had an  AC-4 power supply for one of my C-line pieces of gear and the
> filter caps were in really bad shape within the power supply.  In fact,
two
> of the caps were blown and the others were really dried out.  I recently
> purchased one of Mike's Drake AC-4R power supply boards and installed it
in
> my AC-4 Power supply.  It works great and looks beautiful mounted in the
> AC-4.  The parts are all better then original Drake manufacture.  I can't
> say enough about this board and it was easy to install too.  Consequently,
> I feel very comfortable about buying some of Mike's L-4/L-7 boards if he
> ever decides to do a run of them.  They are designed the same way as the
> AC-4R boards and will be easy to install.
> You just need to make sure the power is off, not connected and the old
> parts are completely discharged before getting your hands inside the amp's
> power supply.
>
> I think it would be a very good idea for all of us with a L-4 or L-7 to
> purchase one of these boards from MIke as an insurance policy for our
> treasured L-4 or L-7 Drake Amps.  Our amps and their filter caps are
> getting old.  These parts will need replacing and I can't think of a
better
> way of doing that then buying a board from The Heathkit Shop (Mike Bryce).
> If we could get enough demand for just the board without the parts, the
> board cost would not be that expensive for us to tuck away the board for
"a
> rainy day" when it will be needed.  Then each of us could order the
readily
> available fresh component parts to stuff our boards when we decide to
> install the board.  Or we could install the boards now as an insurance
> policy against catastrophic failure.  I am sure Mike could sell us the
> boards with and without board parts.  (Mouser sells all the parts we need
> to stuff the boards).
>
> I hate to see this great project die for lack of demand.  I am willing to
> buy 3 of the boards from Mike for my amps.  I am not sure how many boards
> need to be produced to make a run of them but I have to believe we as a
> collective group could get the demand up to 100 or so.  Hopefully that is
> enough for a 'run of boards".  Think it over.  We have a window of
> opportunity here to protect our investment.  If you feel like I do about
> this, drop Mike a line and let him know you would be willing to buy a
board
> from him for your amp as an insurance policy.  I am going to tell him I
> would buy 3 of them from him if he would reconsider and do a run of them.
> I'm convinced we will be kicking ourselves for not taking advantage of
this
> great opportunity by letting this project die.
>
> You can write Mike Bryce or visit his web site at;
> http://www.theheathkitshop.com
>
> Please understand, I am not connected with Mike Bryce or his Company in
any
> way.  I have never met Mike but have purchased a number of his products
and
> they are all first class.   This letter was my idea and not Mike's.   I
> have no insider information on the project.  He has not seen this letter.
> I just feel we a crazy if we don't get the demand up for this project
> before it dies if it hasn't already died.  I would be buy my boards from
> Mike like everyone else.
>
> Consider my post and if you agree, please drop Mike Bryce an e-mail and
> let's  see if we can get him to do a run of these boards.
>
> Lee
>
>
>
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