[Amps] Amps Digest, Vol 101, Issue 34
K3vw at aol.com
K3vw at aol.com
Tue May 24 14:01:35 PDT 2011
The Chinese version of the 8877 is still in question. Ameritron sells them
for about $400 cheaper than the Eimac version. I personally have used the
Eimacs for the last 35 years. Never had a failure yet !
K3VW-Vaughn "Willy" Worth, Sr.
Patriot Guard member since 2007
Blue Knights- Law Enf. M/C Club
395th ICBM Sq. Vandenburg, Ca.( Titan II )
314th CE Sq. Osan, Korea- 63-64 (Viet Nam era)
Riding Harley's since 1954
Wash.D.C. Metro P.D.- 1965-1966
Retired Prince Georges Co.P.D.,Md-1966-1985
Retired P.D.-City of Wilson, NC K-9 LT. -1997
Retired Johnston Co., NC School System-2010
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Today's Topics:
1. Re: arrrrgggg!! (N1BUG)
2. Imported 8877 Tube Source (Jim W7RY)
3. Re: Imported 8877 Tube Source (Al Kozakiewicz)
4. Re: Imported 8877 Tube Source (Carl)
----------------------------------------------------------------------
Message: 1
Date: Mon, 23 May 2011 19:14:28 -0400
From: N1BUG <paul at n1bug.com>
Subject: Re: [Amps] arrrrgggg!!
To: "'' amps ''" <amps at contesting.com>
Message-ID: <4DDAEA54.5050201 at n1bug.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>> Hi Carey, flapper tuning is the best (maybe only) method for resonating
a
>> strip line plate circuit.
>
> I think Carey said he was using the YU1AW 'lazy builder' circuit. That's
> not the usual resonant stripline with capacitive coupling design.
> Visualising it on Smith chart is the easiest way for me to think about
> how it works. Probably long before YU1AW, N1BUG built a 4CX1000 amp that
> way, with stripline instead of the lumped inductor YU1AW uses.
Yes, and it was tuned with a vacuum variable. The output coupling
was a flapper. I often regretted parting with that amp, as it was in
many respects better than what succeeded it.
73,
Paul N1BUG
------------------------------
Message: 2
Date: Mon, 23 May 2011 17:53:28 -0700
From: "Jim W7RY" <w7ry at inbox.com>
Subject: [Amps] Imported 8877 Tube Source
To: "AMPS" <amps at contesting.com>
Message-ID: <5410A7EF43164B68A5126B7B03F8E97D at Laptop>
Content-Type: text/plain; charset="iso-8859-1"
Does anyone have a source for imported 8877 tubes? Has anyone had any in
service? How did they do?
Thanks!
73
Jim W7RY
------------------------------
Message: 3
Date: Mon, 23 May 2011 21:03:38 -0400
From: Al Kozakiewicz <akozak at hourglass.com>
Subject: Re: [Amps] Imported 8877 Tube Source
To: 'Jim W7RY' <w7ry at inbox.com>, AMPS <amps at contesting.com>
Message-ID:
<4CD6C06BD31B9943A92A27019AD8E1819B2B68D740 at MAIL34.thoughtbus.com>
Content-Type: text/plain; charset="us-ascii"
I purchased one from Henry Radio about a year and half ago. The amp it
sits in is located at our lake house, so it only sees summer weekend duty and
all the winter contests, including the RTTY contests. Henry wasn't the
cheapest, but they had a one year guarantee. So far no complaints, and I'm
notoriously abusive of every tool and piece of equipment I own.
Al
AB2ZY
-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Jim W7RY
Sent: Monday, May 23, 2011 8:53 PM
To: AMPS
Subject: [Amps] Imported 8877 Tube Source
Does anyone have a source for imported 8877 tubes? Has anyone had any in
service? How did they do?
Thanks!
73
Jim W7RY
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------------------------------
Message: 4
Date: Mon, 23 May 2011 21:23:05 -0400
From: "Carl" <km1h at jeremy.mv.com>
Subject: Re: [Amps] Imported 8877 Tube Source
To: "Jim W7RY" <w7ry at inbox.com>, "AMPS" <amps at contesting.com>
Message-ID: <F2B15104B2E14F1193A14566BE655D20 at computer1>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Ameritron has been having very good luck with them, they offer customers a
choice of Chinese or Eimac. The last I looked the Chinese was about half
price.
Carl
KM1H
----- Original Message -----
From: "Jim W7RY" <w7ry at inbox.com>
To: "AMPS" <amps at contesting.com>
Sent: Monday, May 23, 2011 8:53 PM
Subject: [Amps] Imported 8877 Tube Source
> Does anyone have a source for imported 8877 tubes? Has anyone had any
in
> service? How did they do?
>
> Thanks!
> 73
> Jim W7RY
> _______________________________________________
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> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
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------------------------------
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End of Amps Digest, Vol 101, Issue 34
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