[R-390] Alternative to IERC tube shields?

[David C. Hallam]

I don't know what you have to pay for IERC shields but I find all the 
time at ham fests for a dollar or two each.

The type I can't find are the ones used by Johnson and some others that 
snap on to their socket.

David
KC2JD/4

Osamu Hazawa wrote:
> Hello All,
> 
> I found this heat dissipating tube shield originally prepared for 
> audiophiles.
> http://thetubestore.com/eat-cooldamper.html
> The heat reduction is just 10% so it must be just waste of money.
> 
> Considering the increased price for the IERC tube shields, can it be an
> alternative?
> 
> Your thought?
> 
> Osamu Hazawa
> 
> 
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