>
>
>I have a set of 572Bs for sale for $70 shipped in the lower 48. These are at
>least 90% emission (600 watts out on 40 meters in my SB-200). Or will trade
>them even for a ten tec model 288 1800 hz filter for the Paragon. The tubes
>are American made.
>
// In the 1930s, Bell labs found that a male voice needs 2700Hz of
bandwidth for optimal intelligibility. Narrower bandwidths will work
acceptably with a female voice. I use a pair of TS-930S filters to
achieve a 2700Hz bandwidth in my TS-440S.
cheers, Lane
- R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.
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