Folks,
I used to think silver plating was a big deal until I ran a bunch of
tests. See http://www.bnk.com/W0QE/inductor_Q_tests.html for the
results. Silver is only 7% better than copper and with reduced
resistance comes reduced skin depth resulting in only about a net
difference of 4%. Lore has it that the corrosion on copper increases
the resistance but my tests did not show that to be true for copper I
oxide (reddish brown), copper II oxide (black), and copper carbonate
(blue green). If you really want the coil to look good for a long time
just paint it with some glossy high temp enamel spray paint which has
absolutely no effect at HF. A "real" amp should have a "fire engine"
tank circuit.
73, Larry, W0QE
Missouri Guy wrote:
> If nothing else, there's a rub-on silver-plating powder
> available. Also, I remember seeing an article in QST
> on how to do your own real silver plating.
>
> I like the silver plating too, but to retard corrosion.
>
> Charlie N0TT
>
> On Tue, 8 Jul 2008 13:57:08 -0400 "Bob Maser" <bmaser@tampabay.rr.com>
> writes:
>
>> But silver plated inductors look so classy. Using bare copper is
>> tacky,
>> shows poor moral fiber. Of course gold plating would look good too
>> but I
>> prefer the understated elegance of silver appearance.
>>
>> Remember, in CA too much power is just enough.
>>
>> Bob W6TR
>> ----- Original Message -----
>> From: "David Cutter" <d.cutter@ntlworld.com>
>> To: "Jan Erik Holm" <sm2ekm@telia.com>
>> Cc: "AMPS" <amps@contesting.com>
>> Sent: Tuesday, July 08, 2008 1:49 PM
>> Subject: Re: [Amps] Silver Strap
>>
>>
>> I've read that silver plated coils encourage VHF and UHF
>> oscillations.
>>
>> David
>> G3UNA
>>
>> ----- Original Message -----
>> From: "Jan Erik Holm" <sm2ekm@telia.com>
>> Cc: "AMPS" <amps@contesting.com>
>> Sent: Monday, July 07, 2008 9:19 PM
>> Subject: Re: [Amps] Silver Strap
>>
>>
>> Silver! What a waist! After all it´s only 28 MHz.
>>
>> / Jim SM2EKM
>> ----------------------
>> k7rdx wrote:
>>
>>> Try: www.freng.com Frontier Engineering..I purchased silvered
>>>
>> strap from
>>
>>> them a few yrs ago for a very reasonable price..73,Jim..K7RDX..
>>> ----- Original Message -----
>>> From: "Bob Maser" <bmaser@tampabay.rr.com>
>>> To: "AMPS" <amps@contesting.com>
>>> Sent: Monday, July 07, 2008 9:15 AM
>>> Subject: [Amps] Silver Strap
>>>
>>>
>>> Anyone have some silver strap they can spare? I need enough to
>>>
>> make a 10M
>>
>>> coil for the B&W 852 and need some to route the RF around. 5 feet
>>>
>> would
>>
>>> do
>>> me. It should be ±1/2" wide and ±.040" thick but beggars can't
>>>
>> be
>>
>>> choosey.
>>>
>>> Bob W6TR
>>>
>>>
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>>
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