[Heathkit] sb-200 capacitors (again)

[km1h]

Glen, you just dont get it. The inferior cap you suggest should not be used 
in the SB200 or any QRO amp for that matter.
I'll repeat myself one more time : Those caps are far inferior to the 
originals from Heath. Understood? Using your car analogy they equate to a 
Yugo. BTW, KIA has won JD Powers quality awards with their 2005 models.

Now, in light duty use such as a receiver, xcvr, etc they will be OK.

Why you continue to make such a big deal about less than $20 in total 
additional cost is beyond me.

End of subject as far as Im concerned.

And to follow up on anothers comment. Yes, we hams do not run our equipment 
24/7 and that may be a BAD thing. Power cycling is often more detrimental to 
boat anchors than running continuously. OTOH, ham equipment is often 
designed with components running at or sometimes even over their ideal 
specs. This will wear out tubes for instance. It really becomes a judgement 
call and being very familiar with your gear. Drake C Line is one example of 
operating on the edge! So is my Clegg Zeus.

With the SB200 the PS is active as soon as it is turned on. Standby current 
is flowing thru the caps and heat is being generated internally. Cooling in 
the PS compartment is marginal at best.

With the several hundred SB200's I have converted to 6M over the past 40 
years I often replace the top cover with perforated aluminum and only cover 
the RF area.

For the cost, performance and reliability the SB200 has got to be one of the 
all time greats. The SB220 is a close second.

Carl
KM1H



----- Original Message ----- 
From: "Glen Zook" <gzook at yahoo.com>
To: "Michael Tortorella" <w2iy at verizon.net>; <heathkit at mailman.qth.net>
Sent: Tuesday, November 22, 2005 1:01 PM
Subject: Re: [Heathkit] sb-200 capacitors (again)


> There definitely is nothing wrong with replacing the
> electrolytics with even higher quality parts.  The 105
> degree capacitors are available from Mouser but do
> cost quite a bit more.
>
> The replacement electrolytics that I suggested are of
> higher quality than the original capacitors (which
> have often lasted for decades) while being relatively
> inexpensive.  But, there are even higher quality
> components that are available and can most certainly
> be used if so desired.
>
> What I was asked for is a list of replacement parts
> for the power supply in the SB-200 that will do the
> job at a minimum cost.  That I did.  If someone wants
> to spend more money on even higher quality parts then
> that is their choice.  It is my opinion that the parts
> I suggested will do the job.  However, I definitely do
> not disagree with those who are suggesting rplacing
> the existing parts with even higher quality parts.
>
> It is sort of like comparing a Kia with a Rolls Royce.
> Both will get you there, it is just a matter of
> "style".
>
> Glen, K9STH
>
>
> --- Michael Tortorella <w2iy at verizon.net> wrote:
>
> That said, can anyone point to a source for the 105C
> rated caps?
>
>
>
>
>
> Glen, K9STH
>
> Web sites
>
> http://home.comcast.net/~k9sth
> http://home.comcast.net/~zcomco
>
>
>
>
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