[Hammarlund] Noise Filter

[Charles Ochs]

I believe this was known as the "Lamb" noise filter, and was the best of all the older designs, for the reasons that you mentioned. Definitely better than the circuit used by National in the HRO and others. I have a Hammarlund-Roberts "Hi-Q" set in my collection, and I always assumed it to have been the beginning of the use of the "Hi-Q" model designation-but I could be wrong. You all know about that word "assume". I have never read anything to substantiate this, but it sounds good to me.  ChuckN1LNH