开云体育

Hi Paul, I have not received the link. Can you please send it? Thanks, Wolfgang Von: [email protected] <[email protected]> Im Auftrag von Paul Hearn Gesendet: Montag, 29. Januar 2024 08:58 An:

Melvyn G8RRN - I did respond to tor PM on this - maybe it went into your spam? Steve G8KHW

Friday Feb. 2nd. 19:30 GMT (19:30 UTC) on Zoom *Amateur SDR based* *interferometry -* hardware and software. (Getting started) Marcus Leach President. *Canadian Centre for??Experimental?Radio

Might interest you all! Andy

Thanks Peter, I was trying to keep things simple and not have a feed cable (although I accept even a connector is a short length of 50ohm coax) but had forgotten I had measured the antenna into 50

Hi folk - I'm a radio ham and just joined this group because I have a 1.8m, 6 petal aluminium parabolic dish to dispose of. Obviously of interest for EME and Radio Astronomy. I'm pretty sure it was

Please see the attached 2024 Polar Aeronomy and Radio Science Summer School (PARS) announcement ( https://haarp.gi.alaska.edu/pars2024 ).? The 10-day program will be held at the University of Alaska

It is not easy to give you a satisfactory answer Melvyn. If you connect your antenna directly to the LNA, then you can almost use ohms law to work out the power loss plus the equivalent loss added

Now it's getting quite interesting. No feedback yet from Leicester National Space Centre or university research group. Tony

A question for the RF engineers amongst us. How important the output return loss of the antenna feed. To my mind if you have an LNA of 75K input noise temperature, as well as adding that noise to the

Hello Folks The receiver located near the Armagh observatory in Northern Ireland is back on the air following a more complete installation after the initial trial. So we now have two of the planned

All members You may have received an email? about "Reverification" from groups.io. Yes I know this is standard scam procedure, but this is ligitimate. This was triggered by Spamhaus identifying

Just trying to listen to this.. Amateurs in Radio Astronomy https://physicsworld.com/a/radio-pioneers-the-enduring-role-of-amateurs-in-radio-astronomy/ -- -- Martyn

-- Martyn ---- Andrew Thornett via groups.io wrote ----

Interferometers need hardware bias tees for SAWBird H+ 1420MHz filters with cascaded amplifiers, (which they also need as AD8302 chip requires certain level power input on SMA connectors to work) as

I am John

I am not, but owning an RSPDuo I would also be interested to hear if this is possible or of anyone using one for RA applications. Adrian

Afternoon Is anyone here running Spectrum Lab with an RSPDuo ? Kind Regards John B

This will be the Zoom link to join Andrews H-line meeting... Join Zoom Meeting https://us02web.zoom.us/j/82340318050?pwd=dDFjd2ZiRE1JSnZ3QTM4NDlHWEpSQT09 Meeting ID: 823 4031 8050 Passcode: 958439 --

Hi All I've received some e fantastic advice on making and testing AD8302 based interferometer and have summarised it on my website and thought I'd share the link here for anyone else interested in