Best LNA for Noaa and Meteor satellite reception

[Sasha Films]

Hi all,

I want to receive noaa and meteor satellite images, and I built a DCA antenna. I get a really strong signal for meteor, but for noaa, I get a growing signal, then, a rapid drop to nothing.  I think an LNA would help with this. I looked at a Nooelec LNA, here, but some reviews say that is breaks down and stops working when it arrives. It is pricey, so I am wondering, what LNA do you use? Is my LNA worth it?

Thanks in advance 

[Job Geheniau]

Hi 

I get very good results with a QFH helix antenna (self build) and a cheap Chinese LNA.(https://nl.aliexpress.com/item/4000945033160.html)

Thats really enough for Meteor, Noaa AND ISS.

Op dinsdag 16 februari 2021 om 22:08:13 UTC+1 schreef sasha...@gmail.com:

[Emmett Kyle]

I've been using two Noolec Sawbirds to receive GOES16 and 17 signals. They both work very well. I've had no issues with them for 1694.1MHz. I actually was able to see a -169dbm signal with one connected to my HP8566 spectrum analyzer.

[Sasha Films]

Thanks! Is it better to just assemble an LNA myself out of components? Aliexpress takes four weeks to ship. 

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[Sasha Films]

Are the Nooelec LNAs reliable? They seem to break down a few weeks after arrival. 

[Hamish Barker]

I have been running nooelec sawbird h+ land for a year or so. Breakage due to mechanical trauma and rainwater flooding but not just unprovoked failure. I think they are good value for money.

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[Marcus D. Leech]

On 02/18/2021 05:52 PM, Hamish Barker wrote:

I have been running nooelec sawbird h+ land for a year or so. Breakage due to mechanical trauma and rainwater flooding but not just unprovoked failure. I think they are good value for money.

I have a number of the NooElec LNAs.   We've been running them in our 21cm dual-polarization spectrometer for a couple of years without
  incident, and I was using the LaNA in our pulsar telescope for many months without incident.

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[Sasha Films]

Is a wideband LNA better for Hydrogen line observations? Or a specific one for the frequency? Is a wideband LNA acceptable?

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[Sasha Films]

And is this good for NOAA and Hydrogen line observations?

[Hamish Barker]

that one is listed only up to 100Mhz. Hydrogen line is 1420.405 MHz . Best to have one with a filter +/- 10-20MHz or else everyone's RFI will swamp your receiver. Hence the recommendation of the Nooelec sawbird H+. A little more expensive than that amazon one, but works great. And the barebones one has a built in switchable 50 ohm load so one could make a dicke switch setup pretty easily (although would need a pulse generator and software subtract in phase with the pulses.). I have used it to simply record a baseline spectrum with the 50 ohm load then subtract that from the antenna feed, but as temperature varies the lna and receiver gains change so the baseline gets a bit less useful.

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