13266	2016-11-06 04:36:58	mosaicmerc	Silver 'plating'
Message	Date	From	Subject
H all: has anyone tried silver coating: http://www.cool-amp.com/cool_amp.html When making HF cavity oscillators for improved efficiency?
13268	2016-11-06 06:14:22	DuWayne Schmidlko...	Re: Silver 'plating'
I have used it to selectively plate areas with SMD parts on home made PCBs. Works well for what I wanted. Very easy to use, just wet a cotton ball or swap and apply a little of the powder. Then just rub over the area you want plated. It does take quite a bit of rubbing for a minute or so. You can repeat to get heavier plating. Works best if you have the area you want to plate very smooth and nearly polished before you start. DuWayne KV4QB
13269	2016-11-06 07:41:39	Sandeep Lohia	Re: Silver 'plating'
Dangerous & banned, uses Potassium argento cyanide as catalyst, U need a licencing as to buy, better to outsource to a goldsmith... however sodium compound is also used, but electroplating is bulgy, not uniform edges...
13270	2016-11-06 08:07:19	Russ Hines	Re: Silver 'plating'
From the Cool Amp website FAQ: "Cool-Amp is non-hazardous and has no toxic chemicals. There is no graphite, mercury or cyanide in the product." 73, Russ WB8ZCC
13271	2016-11-06 10:14:53	K5ESS	Re: Silver 'plating'
The MSDS for this material doesn’t support your contention. Mike K5ESS
13272	2016-11-06 12:16:20	Sandeep Lohia	Re: Silver 'plating'
was talking about : https://en.m.wikipedia.org/wiki/Electroplating How effective is ink printing ( from silver pen ) or as in now friction powder coating @ RF skin-effect? is coating uniform? ............................. Those who risk! A big bathtub can be subistuated with little cotton wrapped on silver spoon dipped in H2O + catalist salt, & some low voltage current... This might be safe for any other metal eelectroplating may be copper! but definitely not with auro & agento...
13273	2016-11-06 13:37:51	Sandeep Lohia	Re: Silver 'plating'
As I already said in first mail sodium compound, eg : NaCl (table salt) can also be used : http://www.saltlakemetals.com/SilverChloridePlating1.htm above can be same chemical formula with coolamp. & it's coating might be bulgy, not uniform. Good for DC ( M no way related to any silver seller ) ( mailed from mob) some jeweliries R electroplated... On Nov 7, 2016 1:41 AM, "Sandeep Lohia" <sandeeplohia12@gmail.com> wrote: was talking about : https://en.m.wikipedia.org/ wiki/Electroplating How effective is ink printing ( from silver pen ) or as in now friction powder coating @ RF skin-effect? is coating uniform? ............................. Those who risk! A big bathtub can be subistuated with little cotton wrapped on silver spoon dipped in H2O + catalist salt, & some low voltage current... This might be safe for any other metal eelectroplating may be copper! but definitely not with auro & agento...
13274	2016-11-06 21:20:07	Andy	Re: Silver 'plating'
"http://www.cool-amp.com/cool_ amp.html" I used that stuff many years (decades) ago. I thought it was like magic. I probably used my fingers to rub it on the circuit boards -- that is, after cleaning the ferric chloride stains off my fingers. (Tongs? Gloves? We don't need no stinkin' gloves!) "When making HF cavity oscillators for improved efficiency?" I didn't use it for that. Just circuit boards. However, someone else I worked with, might have used it inside a VHF coaxial filter. It was a ~10 foot long piece of plumbing with a center conductor having a varying diameter. It was a low-pass filter with a cutoff around 100+ MHz, and sat on the output of an FM broadcast transmitter. He took the filter apart, cleaned it, and then might have used the Cool-Amp to enhance its interior finish, on the belief that it would lower its losses. The result? We don't know for sure, but he theorized that it might have improved the Q a bit too much. Over the next few months, they started getting spontaneous shutdowns, where the transmitter's RF would cycle off, and nothing would be wrong. We think it would occasionally arc inside that coaxial filter, a few times a day, and each zap would trigger an overload relay in the transmitter. They eventually died down. Andy
13276	2016-11-07 07:20:37	Bill Carver	Re: Silver 'plating'
W4ZCB made a series of helical resonators in the 1 GHz region using copper pipe. He measured the Q before and after silver plating the parts and found almost no difference in Q.....I presume loaded Q since it was connected to 50 ohm instrumentation. W7AAZ
13277	2016-11-07 08:37:51	drd_007	Re: Silver 'plating'
This is truly an amazing product. It's quick, efficient and easy to use. I have used it for many applications, including lining cavities (polaplexer cavity). I purchased a bottle in 1968 and it's still half-full. It goes a LONG WAY. It was a popular product in the ham world back then. Mike, W4XN H all: has anyone tried silver coating: http://www.cool-amp.com/cool_amp.html When making HF cavity oscillators for improved efficiency?