[time-nuts] Re: The Collapse of Puerto Rico’s Iconic Telescope [April 5th, 2021 New Yorker]

[Wes]

Was a pity.  China's FAST is receive only.  I believe that leaves Green Bank as 
the biggest transmitting telescope.

I remember 417s.  I had them in a copy of a design by W2AZL.  I also had a 
two-meter preamp I designed using 416Bs.  Of course uW cooled preamps are not 
unusual now, but back then a blower on a receive amplifier was unusual :-)

Wes Stewart N7WS

On 3/30/2021 4:06 AM, ew via time-nuts wrote:
> GOOD Morning Tom                                                                                                                                                       Thank you for the super information Read it over and over. To me no joy, sadness for Astronomy, Science, Puerto Rico and the US. China is now the leader with a 500 meter unit! Did follow it since the seventies because of the low noise receivers.  Remember the 417 Triodes? I had some for Ham use.                                                                   Any body knows what happened to its Maser?                                                                                                             Bert Kehren
> _______________________________________________