ove will need that 12 volts as well.
One last thing if you do CW. Look into the AGC mod offered by Sherwood.
It is well worth the considerable trouble to do. Good Luck!
David Assaf, III
W5XU
On Sun, Mar 31, 2013 at 8:53 PM, Byron Tatum wrote:
> Hello-
> I am in the process of ins
agree with the comments. At hamfests a great one goes for 650 to 750 with
all the filters. Ebay is all over the place. Might want to also try eham.
Good luck and welcome back!
David Assaf, III
W5XU
On Fri, Mar 22, 2013 at 4:57 PM, Mark Nace wrote:
> Good for you Tom !
> I would look
asked, they will last a long time.
As to your question, the bias for the tubes are manufacturer sensitive. As
Drake used mostly Sylvania tubes, they suggest to reuse the same.
David Assaf, III
W5XU
On Thu, Mar 21, 2013 at 1:40 PM, Charles Ring wrote:
> I've always questioned Drake&#x
requ...@zerobeat.net
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David Assaf, III
W5XU
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Got the rx on ext mute in a twin config?
Sent from my iPhone
David Assaf, III
On Sep 10, 2012, at 3:44, "Peter Ravn" wrote:
> After alignment per manual of the RF and mixer stages, my T4XB has got a
> squealing transmit audio which in my R4B sounds like RF feedback. The prob
Me too!
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David Assaf, III
On Mar 8, 2012, at 9:57, "Donley" wrote:
> I lost my connection to the Drakelist and am testing to see if it has been
> restored.
>
> Richard
>
>
> ___
>
No
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David Assaf, III
On Jun 7, 2011, at 7:23 PM, Neil M Califano wrote:
> Does Sherwood manufacture their own crystals?
>
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Sherwood. It is in an r4c modified many years ago.
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David Assaf, III
On Jun 5, 2011, at 9:48 PM, "Jim Shorney" wrote:
>>
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does not work suggest
replace the Zener
Good luck
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David Assaf, III
On Oct 26, 2010, at 6:46 AM, Curt Nixon wrote:
Hi Eddy:
That brass end sticking out the back of the VFO can is the shaft
that the permeability cores are mounted on.
You can carefully remove the can from
tubes of the same manufacturer is sound as once
the setup was perfected the tubes we very close to each other.
Good luck.
Sent from my iPhone
David Assaf, III
On Sep 27, 2010, at 10:23 PM, Garey Barrell
wrote:
The 'real' catch is that these tubes were originally designed to
w
an unstable part of the curve and exhibit an
inconsistent impeadence and hen e the jump.
Suggest you change the Zener
Sent from my iPhone
David Assaf, III
On Aug 24, 2010, at 10:22 AM, "steve white" wrote:
Dennis
I had this problem once in a old HQ170 and it turned out to be
Sorry. Zener diode in the vfo
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David Assaf, III
On Aug 20, 2010, at 12:28 PM, David Assaf wrote:
Change the 3zener diade in the CFO
Sent from my iPhone
David Assaf, III
On Aug 19, 2010, at 4:19 PM, pony...@aol.com wrote:
Hi People,
I've got an R4C that is ju
Change the 3zener diade in the CFO
Sent from my iPhone
David Assaf, III
On Aug 19, 2010, at 4:19 PM, pony...@aol.com wrote:
Hi People,
I've got an R4C that is jumping frequency by +- 1 Khz, then
slowly returns to the correct frequency only to repeat again, and
again.
I
Sherwood receiver is a wonder. Still use mine
Sent from my iPhone
David Assaf, III
On Jul 31, 2010, at 9:48 AM, Robert Ladden wrote:
I had this problem when a crystal filter on the back was not making
a good connection with one of the pins. Wiggle each filter. The
static crashes would occur out
Sent from my iPhone
David Assaf, III
On May 10, 2010, at 3:32 PM, Curt Nixon wrote:
Yes...I wasn't very clear on the amp at the Rx approac. It would
still be on the counter leg of the Y. really an "L"...so the INJ
path is still same as original between R and T but the extra c
go from there. Note that some early ac 3 units
did not have this connector.
Good lick
Sent from my iPhone
David Assaf, III
On Jan 22, 2010, at 12:15 PM, Paul Gerhardt
wrote:
Anybody have a part #/source for a VOX connector for the AC-4? What
else can you use to make a relay cable? Going
iPhone
David Assaf, III
On Jan 25, 2010, at 9:22 AM, Garey Barrell wrote:
Frank -
Interesting!
One thing, tuning the RF TUNE to the "middle of the 80M band"
_segment_ is probably tuning to the IF of 5.645 MHz.
I certainly suspect Bias supply troubles. Is the FInal idle setting
o
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