[Amps] Amps Digest, Vol 172, Issue 57

Mon Apr 24 11:37:09 EDT 2017

In response to message #1:

Re Icom pw-1's, the (lack) of reliability of the auto tuner was what 
kept me away from buying one.

I am a fan of Icom gear, but not that of breaking my budget to support 
the onshore repair facility and the shipping guy.

Bought the Ameritron Al-82, two dependable 3-500's, manual tune, can get 
most of my money back considering what I paid for it a few years back

The Yaesu Quadra, OTH, has been a overlooked but dependable SS amp for 
quite a while now.

Gary...wa6fgi

On 4/24/2017 6:53 AM, amps-request at contesting.com wrote:
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> Today's Topics:
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>     1. Re: Fwd: Amps Digest, Vol 172, Issue 39 (Bill Turner)
>     2. Re: tarnish or corrosion? (Charles H)
>     3. Re: tarnish or corrosion? (Christopher Brown)
>     4. Jennings RB8A voltage rating? (Victor Rosenthal 4X6GP)
>     5. Re: Price per Watt Conversation (sm0aom at telia.com)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 24 Apr 2017 03:30:44 +0000
> From: Bill Turner <dezrat at outlook.com>
> To: Amps group <amps at contesting.com>
> Subject: Re: [Amps] Fwd: Amps Digest, Vol 172, Issue 39
> Message-ID:
> 	<CY1PR0301MB1196D95D4E8533F4502C0817C01F0 at CY1PR0301MB1196.namprd03.prod.outlook.com>
> 	
> Content-Type: text/plain; charset="us-ascii"
>
> ------------ ORIGINAL MESSAGE ------------(may be snipped)
>
> On Sun, 23 Apr 2017 20:41:44 -0400, W4TV wrote:
>
>>> Cathy, the PW-1 is a 1000W amplifier per Icom's own Instruction
>>> Manual.
> REPLY:
>
> I suspect very few PW-1 owners know what it costs to do a power supply
> repair on that unit:  $2000. They don't repair, they replace. When I
> found that out, mine went up for sale while it was still working.
>
> Something to keep in mind.
>
> 73, Bill W6WRT
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 24 Apr 2017 08:32:02 +0000
> From: Charles H <k4vud at hotmail.com>
> To: amps <amps at contesting.com>, "ka4inm at gmail.com" <ka4inm at gmail.com>
> Subject: Re: [Amps] tarnish or corrosion?
> Message-ID:
> 	<CY4PR13MB1543173BBA74548708793E11F71F0 at CY4PR13MB1543.namprd13.prod.outlook.com>
> 	
> Content-Type: text/plain; charset="iso-8859-1"
>
> The product in the link herein is made to resist electric current... see the Di on the word Dielectric.
>
> 73, Charly
>
>
> ________________________________
> From: Amps <amps-bounces at contesting.com> on behalf of Ron Youvan <ka4inm at gmail.com>
> Sent: Sunday, April 23, 2017 1:49 PM
> To: amps
> Subject: Re: [Amps] tarnish or corrosion?
>
>     Don N8DE n8de at thepoint.net wrote:
>
>> Have you ever thought of putting petroleum jelly on the contacts to
>> prevent the moist air from getting to the metal?  Worth a try!
>     Better, use something made for this exact problem:
>
>
> https://smile.amazon.com/Novagard-Dielectric-Silicone-Compound-AS-8660/dp/B001BNZWNU/ref=sr_1_14?ie=UTF8&qid=1492955056&sr=8-14&keywords=silicone+dielectric+compound
> Novagard G624 Dielectric Silicone Grease Compound, Meets SAE AS-8660, 5.3 oz Tube: Industrial Lubricants: Amazon.com: Industrial & Scientific<https://smile.amazon.com/Novagard-Dielectric-Silicone-Compound-AS-8660/dp/B001BNZWNU/ref=sr_1_14?ie=UTF8&qid=1492955056&sr=8-14&keywords=silicone+dielectric+compound>
> smile.amazon.com
> Novagard G624 Dielectric Silicone Grease Compound, Meets SAE AS-8660, 5.3 oz Tube: Industrial Lubricants: Amazon.com: Industrial & Scientific
>
>
>
>
>     This product has NO bearing strength.
> (part will evaporate, it is a mixture of two silicone greases)
>
>     I have this same problem in W. C. Florida.
>
>> Quoting Charles Harpole <hs0zcw at gmail.com>:
>>> I have a hot and humid year round weather.  I have lots of problems with
>>> some kind of material that gets on exposed plugs and sockets that
>>> interferes with electric conduction.
> --
>     Ron  KA4INM - Youvan's corollary:
>                   Every action results in unwanted side effects.
> _______________________________________________
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> Amps at contesting.com
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> Amps Reflector - Contesting.com Ham Radio Mailing Lists<http://lists.contesting.com/mailman/listinfo/amps>
> lists.contesting.com
> Welcome to the Amplifier mailing list! This list is intended for the exchange of information on HAM RADIO Amplifiers related topics ONLY. Our goal is to keep ...
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 24 Apr 2017 01:11:32 -0800
> From: Christopher Brown <cbrown at woods.net>
> To: amps at contesting.com
> Subject: Re: [Amps] tarnish or corrosion?
> Message-ID: <df762798-c506-d667-3ecf-bc17be75a92a at woods.net>
> Content-Type: text/plain; charset=utf-8
>
>
> Google the uses of dielectric paste/grease, this is an approp use.
>
> Paste, not curing solid...Is displaced wherever theere would be actual
> metal on metal contact in the connector.
>
> Take for example all those plugs/sockets in a modern auto with a sealing
> boot...
>
> Apply a light coating to the inside of the shell, lubes the seal and
> improves sealing...Apply a glob to the female contact opening...When you
> close the connector, they are close fitting, will be driven all through
> displacing air.  Contact will happen as normal, but all "air space" in
> the connector will be filled with an insulator.
>
>
> The only gotcha is when using silicone based dielectric grease you need
> to be aware of "water glass"...Current+salt+silicone can form glass...as
> can arcing...Not the best thing for relay contacts or open contacts
> exposed directly to salt water. (There are non silicone dielectric
> greases for that.
>
> On 4/24/17 00:32, Charles H wrote:
>> The product in the link herein is made to resist electric current... see the Di on the word Dielectric.
>>
>> 73, Charly
>>
>>
>> ________________________________
>> From: Amps <amps-bounces at contesting.com> on behalf of Ron Youvan <ka4inm at gmail.com>
>> Sent: Sunday, April 23, 2017 1:49 PM
>> To: amps
>> Subject: Re: [Amps] tarnish or corrosion?
>>
>>     Don N8DE n8de at thepoint.net wrote:
>>
>>> Have you ever thought of putting petroleum jelly on the contacts to
>>> prevent the moist air from getting to the metal?  Worth a try!
>>     Better, use something made for this exact problem:
>>
>>
>> https://smile.amazon.com/Novagard-Dielectric-Silicone-Compound-AS-8660/dp/B001BNZWNU/ref=sr_1_14?ie=UTF8&qid=1492955056&sr=8-14&keywords=silicone+dielectric+compound
>> Novagard G624 Dielectric Silicone Grease Compound, Meets SAE AS-8660, 5.3 oz Tube: Industrial Lubricants: Amazon.com: Industrial & Scientific<https://smile.amazon.com/Novagard-Dielectric-Silicone-Compound-AS-8660/dp/B001BNZWNU/ref=sr_1_14?ie=UTF8&qid=1492955056&sr=8-14&keywords=silicone+dielectric+compound>
>> smile.amazon.com
>> Novagard G624 Dielectric Silicone Grease Compound, Meets SAE AS-8660, 5.3 oz Tube: Industrial Lubricants: Amazon.com: Industrial & Scientific
>>
>>
>>
>>
>>     This product has NO bearing strength.
>> (part will evaporate, it is a mixture of two silicone greases)
>>
>>     I have this same problem in W. C. Florida.
>>
>>> Quoting Charles Harpole <hs0zcw at gmail.com>:
>>>> I have a hot and humid year round weather.  I have lots of problems with
>>>> some kind of material that gets on exposed plugs and sockets that
>>>> interferes with electric conduction.
>> --
>>     Ron  KA4INM - Youvan's corollary:
>>                   Every action results in unwanted side effects.
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>> Amps Reflector - Contesting.com Ham Radio Mailing Lists<http://lists.contesting.com/mailman/listinfo/amps>
>> lists.contesting.com
>> Welcome to the Amplifier mailing list! This list is intended for the exchange of information on HAM RADIO Amplifiers related topics ONLY. Our goal is to keep ...
>>
>>
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
>
> ------------------------------
>
> Message: 4
> Date: Mon, 24 Apr 2017 16:34:43 +0300
> From: Victor Rosenthal 4X6GP <k2vco.vic at gmail.com>
> To: Amps reflector <amps at contesting.com>
> Subject: [Amps] Jennings RB8A voltage rating?
> Message-ID: <4161bba4-ed4a-f11c-fff0-3b0b05423cff at gmail.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> I have couple of Jennings vacuum relays, 26.5 volt coil SPDT model
> RB8A-26N927 which I would like to use for a remote antenna tuning
> application. But I haven't been able to find the voltage/current ratings
> for the contacts. The Jennings web site is worthless. Maybe someone knows?
>