[time-nuts] Re: The Collapse of Puerto Ricoâs Iconic Telescope [April 5th, 2021 New Yorker]
Lester Veenstra
m0ycm at veenstras.com
Wed Mar 31 18:50:26 UTC 2021
RX up here at Green Bank
Lester B Veenstra K1YCM MÃYCM W8YCM 6Y6Y
lester at veenstras.com
452 Stable Ln (HC84 RFD USPS Mail)
Keyser WV 26726
-----Original Message-----
From: Wes [mailto:wes at triconet.org]
Sent: Wednesday, March 31, 2021 2:34 PM
To: time-nuts at lists.febo.com
Subject: [time-nuts] Re: The Collapse of Puerto Ricoâs Iconic Telescope [April 5th, 2021 New Yorker]
On 3/30/2021 4:33 PM, Lux, Jim wrote:
> On 3/30/21 2:56 PM, Wes wrote:
>> You would know better than I, but I was thinking of physical size; 100m v. 70m.
>>
>> Obviously a BIG difference in TX power.
>>
>> Wes
>
>
> It's all about EIRP, baby.
>
> I know they're talking about half a megawatt for GB, but I don't see it
> happening. They've spent so much time making it "radio quiet", putting a big
> honkin transmitter there seems odd. Just think, a return loss from the feed
> of -30dB (which is pretty good) is good fraction of a kilowatt.
But AFAIK the system is bistatic (pseudo-monostatic) so there's no local
receiver to be subjected to transmitter leakage. We worried about leakage in
the pulse doppler radars I'm familiar with; AMRAAM and Phoenix missiles, but
even they were bistatic for most of their flights, tracking off the aircraft
fire control radar which had significantly higher ERP. Only when close to the
targets did they go active.
Wes
_______________________________________________
time-nuts mailing list -- time-nuts at lists.febo.com -- To unsubscribe send an email to time-nuts-leave at lists.febo.com
To unsubscribe, go to and follow the instructions there.
More information about the Time-nuts_lists.febo.com
mailing list