[Amps] SPE 2K - noisy exhaust fans

Joe Giacobello, K2XX k2xx at swva.net
Wed Nov 30 19:59:33 EST 2016 

Dick, with all due respect, and I admit to wearing hearing aids, I 
simply don't hear those loud fans that some have complained about.  Is 
it possible that your setup is somehow amplifying the vibrations 
somehow?  I've had cabinets, housings, etc. that have amplified 
vibrating equipment.

73, Joe
K2XX

> Dick via Amps <mailto:amps at 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,
> amps-request at contesting.com  writes:
>
> Send  Amps mailing list submissions to
> amps at contesting.com
>
> To subscribe or unsubscribe via the World Wide Web,  visit
> http://lists.contesting.com/mailman/listinfo/amps
> or, via email, send a  message with subject or body 'help' to
> amps-request at contesting.com
>
> You can reach the person managing the list  at
> amps-owner at contesting.com
>
> When replying, please  edit your Subject line so it is more specific
> than "Re: Contents of Amps  digest..."
>
>
> 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 at hotmail.com>
> To:"amps at contesting.com"   <amps at contesting.com>
> Subject: [Amps] A cheer for the SPE  2K
> Message-ID:
> <CO2PR13MB01402C5AE01EBA7E871F9FDDF78C0 at 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 at gmail.com>
> To: "Ian White"<gm3sek at ifwtech.co.uk>,<amps at contesting.com>
> Subject: Re: [Amps] 8877 Grid Connection DC or  Not
> Message-ID:<3AD57085A29447819FCA70446905810D at 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 at 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 at 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 at gmail.com>  wrote:
>>
>>   Subject: [Amps] 8877 Grid Connection DC or Not
>> To: "AMPS"<amps at 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
>>   _______________________________________________
>> Amps mailing  list
>> Amps at contesting.com
>>   http://lists.contesting.com/mailman/listinfo/amps
>>
>> _______________________________________________
>> Amps  mailing  list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>
> _______________________________________________
> Amps  mailing  list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed,  30 Nov 2016 01:02:41 +0000
> From: Bill Turner<dezrat at outlook.com>
> To: Amps group<amps at contesting.com>
> Subject: Re: [Amps] A cheer for the SPE  2K
> Message-ID:
> <CY1PR0301MB11964E76B370DCFFAEBA063BC08C0 at CY1PR0301MB1196.namprd03.prod.outl
> 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 at att.net>
> To: Amps group<amps at contesting.com>,  Bill Turner<dezrat at outlook.com>
> Subject: Re: [Amps] A cheer for the  SPE 2K
> Message-ID:<1638129929.3119280.1480473913979 at mail.yahoo.com>
> Content-Type:  text/plain; charset=UTF-8
>
> Bill Turner<dezrat at 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 at gmail.com>
> To: "Catherine James"<catherine.james at att.net>,    "Amps group"
> <amps at contesting.com>, "Bill Turner"<dezrat at outlook.com>
> Subject: Re: [Amps] A cheer for the SPE  2K
> Message-ID:<4C5DB1C41A8C41DEB16FB397B75DEDE1 at 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 at 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
> _______________________________________________
> Amps  mailing  list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
>
> ------------------------------
>
> Subject: Digest  Footer
>
> _______________________________________________
> Amps mailing  list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
> ------------------------------
>
> End  of Amps Digest, Vol 167, Issue  40
> *************************************
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>

More information about the Amps mailing list