I love this blog! And the stories of amateur amplifier lore.👍
Soon I will report about a Alpha 87a I bought years ago with an Alarm code
related to the RF switch .
I got nostalgic as I grew up when the 77 was "The" amplifier of a poor teenager
dreams.
And always wanted an Alpha( ETO) amplifier ..
I could use some help in fixing my 87a or sending it to a place where the parts
will get good use .
Might even inspire me to operate below 50 MHz !
Jim WA3LBI
Sent from my iPhone
> On Oct 4, 2017, at 10:32 PM, amps-request@contesting.com wrote:
>
> Send Amps mailing list submissions to
> amps@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@contesting.com
>
> You can reach the person managing the list at
> amps-owner@contesting.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Amps digest..."
>
>
> Today's Topics:
>
> 1. Re: Amplifier lifetime (Manfred Mornhinweg)
> 2. Re: Amplifier lifetime (RCM)
> 3. Re: Amplifier lifetime (Lee Bahr)
> 4. Re: Amplifier lifetime (Steve Wright)
> 5. Re: Amplifier lifetime (Mark Schoonover)
> 6. Re: Amplifier lifetime (Bill Turner)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 04 Oct 2017 19:44:43 +0000
> From: Manfred Mornhinweg <manfred@ludens.cl>
> To: amps@contesting.com
> Subject: Re: [Amps] Amplifier lifetime
> Message-ID: <59D53A2B.3090903@ludens.cl>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> _Good_ equipment and machinery should be designed and built well enough
> to work all the way until becoming obsolete, which is when the owner
> decides to replace it because new-technology equipment simply performs
> better, is more efficient, more portable, etc.
>
> Anything that needs to be replaced because it wore out before something
> better became available to replace it, was inadequately built or
> designed, unless it was abused instead of used.
>
> However we should not extend these rules to parts and things that by
> their nature are wear items. Then again, even wear items might in many
> cases be designed and built to last long enough. For example, consider
> brake pads for cars: They are certainly wear items, but it should be
> possible to make them thick enough so that they will last until the car
> is totally obsolete. And a better car wouldn't have brake pads, relying
> instead on purely regenerative, wear-free brakes. Some wear items are
> unavoidable, though.
>
> We can apply all of this to ham gear. That's for example where PIN diode
> switching comes in, and solid state instead of tubes.
>
> Unfortunately even the best design can't totally rule out premature
> equipment failure due to freak failure of components, let alone
> accidents or mis-use. That's why good equipment should also be designed
> to be repair-friendly, and adequate service manuals should be made
> available.
>
> I fully realize that what I just wrote clashes against the business
> practices of many modern companies, which operate under the principle of
> making desirable-looking products that are designed to fail soon after
> the guarantee expires, and making them as hard as possible to repair, in
> order to force people to throw them away and buy new ones. But I don't
> consider those to be good products, and whenever I have any choice, I
> buy those that are designed to work without failures until naturally
> becoming obsolete. And sometimes I build my own instead of buying
> something ready-made.
>
> Manfred
>
>
> ========================
> Visit my hobby homepage!
> http://ludens.cl
> ========================
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 4 Oct 2017 18:30:22 -0400
> From: RCM <robrk@nidhog.net>
> Cc: AMPS submit <amps@contesting.com>
> Subject: Re: [Amps] Amplifier lifetime
> Message-ID: <90B9F680-623D-4913-AC23-95EA4CEBBFD3@nidhog.net>
> Content-Type: text/plain; charset=utf-8
>
>
>> On Oct 4, 2017, at 11:05, Catherine James <catherine.james@att.net> wrote:
>>
>> I expect my SB-220 will be operating for my entire ham radio lifetime. And
>> I'm
>> not retired, so that will be decades. I fire it up at least once a month to
>> keep it gettered.
>>
>
>
> Age check? Maybe someone will come out with a 3-500 Nuvistor.
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 4 Oct 2017 17:33:10 -0500
> From: Lee Bahr <L@w0vt.us>
> To: amps@contesting.com
> Subject: Re: [Amps] Amplifier lifetime
> Message-ID: <8f7af682-dd33-ec1d-fe6d-d82aa7d5f4de@w0vt.us>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> I'm 79.? Anyone got any suggestions as to how long an amplifier should
> last for me?
>
> Lee, w0vt
>
>
> On 10/4/2017 5:30 PM, RCM wrote:
>>> On Oct 4, 2017, at 11:05, Catherine James <catherine.james@att.net> wrote:
>>>
>>> I expect my SB-220 will be operating for my entire ham radio lifetime. And
>>> I'm
>>> not retired, so that will be decades. I fire it up at least once a month to
>>> keep it gettered.
>>>
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
>
> ------------------------------
>
> Message: 4
> Date: Thu, 5 Oct 2017 12:00:18 +1300
> From: Steve Wright <stevewrightnz@gmail.com>
> To: amps@contesting.com
> Subject: Re: [Amps] Amplifier lifetime
> Message-ID: <96ec69d8-f3b2-a4d4-bc73-5cf9282ec996@gmail.com>
> Content-Type: text/plain; charset=utf-8
>
>> On 05/10/17 11:33, Lee Bahr wrote:
>> I'm 79.? Anyone got any suggestions as to how long an amplifier should
>> last for me?
>
> I doubt you mind either way!? ;)
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 4 Oct 2017 18:26:47 -0700
> From: Mark Schoonover <mark@ka6wke.net>
> To: Steve Wright <stevewrightnz@gmail.com>
> Cc: amps@contesting.com
> Subject: Re: [Amps] Amplifier lifetime
> Message-ID:
> <CAC++DEbODE_tu2hR7djXFhCYfsPj_rj5mVLU8tHMPqj-ivW-_g@mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> It should last at least one day after you become a SK. :)
>
>> On Oct 4, 2017 16:02, "Steve Wright" <stevewrightnz@gmail.com> wrote:
>>
>>> On 05/10/17 11:33, Lee Bahr wrote:
>>> I'm 79. Anyone got any suggestions as to how long an amplifier should
>>> last for me?
>>
>> I doubt you mind either way! ;)
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
>
>
> ------------------------------
>
> Message: 6
> Date: Thu, 5 Oct 2017 02:32:30 +0000
> From: Bill Turner <dezrat@outlook.com>
> To: Amps group <amps@contesting.com>
> Subject: Re: [Amps] Amplifier lifetime
> Message-ID:
>
> <DM2PR03MB560B3FE0A770981021B3C55C0700@DM2PR03MB560.namprd03.prod.outlook.com>
>
> Content-Type: text/plain; charset="us-ascii"
>
> ------------ ORIGINAL MESSAGE ------------(may be snipped)
>
> On Wed, 4 Oct 2017 18:26:47 -0700, you wrote:
>
>>>> I'm 79. Anyone got any suggestions as to how long an amplifier should
>>>> last for me?
>
> REPLY:
>
> Baby your amp, run it below its ratings, don't hot switch it and watch
> your SWR and it should last nearly forever.
>
> Electronic parts do fail, just don't help them. :-)
>
> 73, Bill W6WRT
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
> ------------------------------
>
> End of Amps Digest, Vol 178, Issue 10
> *************************************
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|