The 4K-U is still a crank and crank amp but now when I crank C1, all that
adjusts is C1 and the Pi and L roller inductors. My 4K-U was really dirty
with lots of cigarette stains and smell. I took it almost completely apart
in order to do a good deodorizing job and I was having problems
synchronizing all the adjusting parts. With the LDG tuner installed it
cranks a lot easier and the SWR is always acceptable. Down the road I bet
that I'll be able to recoup the $125 cost of the tuner by selling off the
triple caps and the input roller inductor and 4:1 balun assys. My future
plans call for replacing the 8877 with a 3CX1500D7 to allow instant on
operation and a tougher grid.
Bob
----- Original Message -----
From: "Peter Zilliox" <zilassoc@sbcglobal.net>
To: "Bob Maser" <bmaser@tampabay.rr.com>
Sent: Thursday, March 16, 2006 12:07 PM
Subject: Re: [Amps] ARRL Handbook Amp
> Hello Bob,
> Why install the LDG tuner "into" your Henry 4K?
> That statement leads me to believe that you 4K Ultra
> is now auto-tune? I would love to make my 4K Ultra an
> auto-tune amp. I hate cranking and cranking and
> cranking. Please explain for me what you did. Thanks
> for reading and responding.
> Pete
> K5PZ
>
> --- Bob Maser <bmaser@tampabay.rr.com> wrote:
>
>> Lots of errors and omissions in the article. The
>> step-start circuit is not
>> drawn correctly. If you are going to build it I
>> would suggest that you
>> contact K8RA. I installed the LDG automatic antenna
>> tuner into my Henry 4K
>> Ultra and it really works great. For $125 it is a
>> bargain.
>>
>> Bob W6TR
>> ----- Original Message -----
>> From: "Bill Turner" <dezrat@copper.net>
>> To: "FoxRun" <foxrun@velocity.net>;
>> <amps@contesting.com>
>> Sent: Thursday, March 16, 2006 11:40 AM
>> Subject: Re: [Amps] ARRL Handbook Amp
>>
>>
>> > ORIGINAL MESSAGE:
>> >
>> > At 02:40 AM 3/16/2006, FoxRun wrote:
>> >
>> >>Two questions:
>> >>
>> >>1). Has anybody come out with pre-made board
>> templates for the new HF amp
>> >>design in the 2006 hanbook.
>> >>
>> >>2). Has anybody on the list built this one, yet?
>> >>
>> >>It looks like a winner.
>> >>
>> >>73, Scott W3TX
>> >
>> >
>> > *********** REPLY SEPARATOR ***********
>> >
>> > I've heard this 2006 amp mentioned but haven't
>> seen any details.
>> > Could someone furnish some, such as tube type and
>> any departures from
>> > the conventional?
>> >
>> > I have the 2005 handbook and I'm wondering if this
>> one project would
>> > justify buying the 2006?
>> >
>> > Thanks,
>> >
>> > Bill, W6WRT
>> >
>> > _______________________________________________
>> > Amps mailing list
>> > Amps@contesting.com
>> > http://lists.contesting.com/mailman/listinfo/amps
>>
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
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