Dick via Amps <mailto:amps@contesting.com>
Tuesday, November 29, 2016 11:43 PM
As mentioned, the SPE 2K is a very nice amp in many ways, but my problem
with them is the fans are very noisy. They use small 2" exhaust fans that
run at warp speed and it sounds like a jet engines in the shack. I don't
why SPE uses such small blower fans as there's room for larger ones. Larger
fans running at a slower speed would move the same amount of air, be
quieter, and last longer.
73,
Dick- K9OM
In a message dated 11/29/2016 9:57:44 P.M. Eastern Standard Time,
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Today's Topics:
1. A cheer for the SPE 2K (Charles H)
2. Re: 8877 Grid Connection DC or Not (Jim W7RY)
3. Re: A cheer for the SPE 2K (Bill Turner)
4. Re: A cheer for the SPE 2K (Catherine James)
5. Re: A cheer for the SPE 2K (Jim W7RY)
----------------------------------------------------------------------
Message: 1
Date: Wed, 30 Nov 2016 00:35:31 +0000
From: Charles H<k4vud@hotmail.com>
To:"amps@contesting.com" <amps@contesting.com>
Subject: [Amps] A cheer for the SPE 2K
Message-ID:
<CO2PR13MB01402C5AE01EBA7E871F9FDDF78C0@CO2PR13MB0140.namprd13.prod.outlook.
com>
Content-Type: text/plain; charset="iso-8859-1"
I am quite happy with my SPE Expert 2K-FA.
Other than working well, what this amp provides are
-Good amplifier
-antenna switch, 6.
-SWR meter.
-two switched inputs.
de K4VUD
------------------------------
Message: 2
Date: Tue, 29 Nov 2016 18:38:57 -0600
From: "Jim W7RY"<jimw7ry@gmail.com>
To: "Ian White"<gm3sek@ifwtech.co.uk>,<amps@contesting.com>
Subject: Re: [Amps] 8877 Grid Connection DC or Not
Message-ID:<3AD57085A29447819FCA70446905810D@JimsLaptop>
Content-Type: text/plain; format=flowed; charset="utf-8";
reply-type=original
Thanks Ian.. I'll add it to the several versions of your board info that I
already have and use.
I know how amplifier metering works. This is a special application.
73
Jim W7RY
-----Original Message-----
From: Ian White
Sent: Tuesday, November 29, 2016 12:14 PM
To:amps@contesting.com
Subject: Re: [Amps] 8877 Grid Connection DC or Not
This reference, page 3 onwards, may explain what everyone means.
http://www.ifwtech.co.uk/g3sek/boards/triode/triode-manual.pdf
That is how it's done in the large majority of HF amplifiers, and in all
VHF
triode amplifiers where a well-grounded grid is essential.
73 from Ian GM3SEK
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Radio
WC6W via Amps
Sent: 29 November 2016 17:36
To: Jim W7RY; AMPS
Subject: Re: [Amps] 8877 Grid Connection DC or Not
Hi Jim,
Why not leave the grid grounded but, just measure the cathode and plate
currents then subtract to calculate the grid current?
73& Good morning,
Marv WC6W
http://qsl.net/wc6w/
--------------------------------------------
On Mon, 11/28/16, Jim W7RY<jimw7ry@gmail.com> wrote:
Subject: [Amps] 8877 Grid Connection DC or Not
To: "AMPS"<amps@contesting.com>
Date: Monday, November 28, 2016, 7:00 PM
Has anyone run the grid of an 8877
not connected to ground as far as DC is concerned?
I really need to meter the grid current by bypassing the
grid to ground with capacitors and several 10 ohm resistors
in order to meter grid current. Metering grid current by the
CT of the filament transformer, and the ? of the power
supply cant be done. Because the power supply ? is
directly grounded.
Anyone had luck doing this?
Thanks 73
Jim W7RY
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Message: 3
Date: Wed, 30 Nov 2016 01:02:41 +0000
From: Bill Turner<dezrat@outlook.com>
To: Amps group<amps@contesting.com>
Subject: Re: [Amps] A cheer for the SPE 2K
Message-ID:
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ook.com>
Content-Type: text/plain; charset="us-ascii"
------------ ORIGINAL MESSAGE ------------(may be snipped)
On Wed, 30 Nov 2016 00:35:31 +0000, you wrote:
I am quite happy with my SPE Expert 2K-FA.>
Other than working well, what this amp provides are
-Good amplifier
-antenna switch, 6.
-SWR meter.
-two switched inputs.
de K4VUD
REPLY:
I had one and I agree with all the above. It's only drawback is it
won't do legal limit on RTTY or other continuous carrier mode. After
about 5-10 seconds it overheats and drops back to MID power.
Other than that, an excellent amp. I now run an Alpha 9500 which does
not have that limitation, at about the same price but is not solid
state of course.
73, Bill W6WRT
------------------------------
Message: 4
Date: Wed, 30 Nov 2016 02:45:13 +0000 (UTC)
From: Catherine James<catherine.james@att.net>
To: Amps group<amps@contesting.com>, Bill Turner<dezrat@outlook.com>
Subject: Re: [Amps] A cheer for the SPE 2K
Message-ID:<1638129929.3119280.1480473913979@mail.yahoo.com>
Content-Type: text/plain; charset=UTF-8
Bill Turner<dezrat@outlook.com> wrote:
It's only drawback is it won't do legal limit on RTTY or other
continuous carrier mode.
Very few amps will run legal limit on 100% duty cycle RTTY! I don't think
I'd want to
pay for the power supply that would need.
73,
Cathy
N5WVR
------------------------------
Message: 5
Date: Tue, 29 Nov 2016 20:56:01 -0600
From: "Jim W7RY"<jimw7ry@gmail.com>
To: "Catherine James"<catherine.james@att.net>, "Amps group"
<amps@contesting.com>, "Bill Turner"<dezrat@outlook.com>
Subject: Re: [Amps] A cheer for the SPE 2K
Message-ID:<4C5DB1C41A8C41DEB16FB397B75DEDE1@JimsLaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
1 amp transformer is only $400.00. My power supplies run RTTY contests at
1500 watts no issues.
73
Jim W7RY
-----Original Message-----
From: Catherine James
Sent: Tuesday, November 29, 2016 8:45 PM
To: Amps group ; Bill Turner
Subject: Re: [Amps] A cheer for the SPE 2K
Bill Turner<dezrat@outlook.com> wrote:
It's only drawback is it won't do legal limit on RTTY or other
continuous
carrier mode.
Very few amps will run legal limit on 100% duty cycle RTTY! I don't think
I'd want to
pay for the power supply that would need.
73,
Cathy
N5WVR
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------------------------------
End of Amps Digest, Vol 167, Issue 40
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