High Gain 10-Turn Helix Antenna For L-Band & Receiving Inmarsat

Рет қаралды 9,884

29 күн бұрын

Here we take a look at the new L-Band 10 Turn Helix Antenna from Nolle Engineering. With a combined Sawbird Filter and LNA, this antenna proves to pull in those weak signals from Inmarsat extremely well.
Purchase Antenna Here:
nolle.engineering/en/l-band-p...
SawBird Filter & LNA:
UK: amzn.to/4b2UzZG
USA: amzn.to/3K0SQYZ
SDR With Bias Tee:
UK: amzn.to/3QqjrBY
USA: amzn.to/3UDH2ll
L-Band Frequencies:
uhf-satcom.com/satellite-rece...
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Пікірлер: 25

@KA4UPW 27 күн бұрын

Nice, BUT Im going broke buying everything you show me !

@x_CrossHair_x 27 күн бұрын

LOL 😊😊

@mscir 19 күн бұрын

This looks like a great hobby.

@fotografm 26 күн бұрын

I put a large heatsink on my Nooelec SDR dongle as it gets quite hot - especially when outdoors in direct sunlight.

@ruperthamblin3605 27 күн бұрын

I’d be interested to know if you could receive L Band HRPT on this antenna….all be it probably with a rotator…?

@sgtclubba1732 14 күн бұрын

I'm sure if you are willing to buy one you could specify what frequency you want the antenna for. The spacings between the loops are smaller and the loop diameter is narrower for 1.7ghz. I built my own 10 loop helicoil for around £15 and you can hand-track HRPT signals fairly easily. They are a fairly wideband antenna but best built for the frequencies you want to monitor as a 1.5ghz helicoil is weak on 1.7ghz and vice versa.

@x_CrossHair_x 27 күн бұрын

You should have demonstrated some of the ACARS Voice Communications (I won't tell) MUM's the Word.😉

@digitalmediafan 14 күн бұрын

The voice transmissions on 25 deg have moved to 60 deg apparently. I can't get anything with my patch antenna on 60 deg so guess you need one of these with better gain but I'm not paying the astronomical price

@andrewlincoln9766 Күн бұрын

What Inmarsat satellite is that at 60 degrees, is it east or west?

@digitalmediafan 23 күн бұрын

I use to get voice traffic a few years ago, checking just now not a peep, guess they've moved to another frequency and gone encrypted no doubt or just using other technology for transmissions ?

@TechMindsOfficial 23 күн бұрын

I was actually able to decode some audio transmissions using JAERO and SatDump, just having to wait for the calls to appear :)

@digitalmediafan 23 күн бұрын

@@TechMindsOfficial ah well maybe a weaker signal now but the cluster of signals i use up get around 1546.165 is dead with me all the time and it was very active once

@digitalmediafan 22 күн бұрын

@@TechMindsOfficial Which frequency ?

@TheToxiss 27 күн бұрын

How is the reception when compared to RTL-SDR active L-band patch antenna?

@TechMindsOfficial 27 күн бұрын

I didn't want to show a comparison in the video as they are both completely different antenna designs and they cost differently. However, this 10 Turn helix performs the best out of any of the L-Band antennas I have tested so far. I still have to test the other antenna I showed at the end of the video, with a dish. So we will have to wait and see how that compares. Cheers

@maxxm.108 27 күн бұрын

Which Inmarsat do you receive and what SNR did you get on the AERO and MARINE channels? I receive inamrsat 4A-F4 using an rtl-sdr patch antenna and on marine channels I have snr from 8 to 12dB. Currently, I am building a 7-turn helix antenna with Nooelec Sawbird, a set similar to the one presented here, and I am wondering what improvement I can count on.

@sgtclubba1732 14 күн бұрын

@@maxxm.108 I recently tested a 5 loop one I made for a friend for 1.5ghz in UK and got 18-22db SNR from 25 East and 52 West inmarsat, that antenna is giving the guy I built it for a 5db increase over the patch antenna. I use a 10 loop for HRPT and it is pretty impressive. I just ordered more wire to test how far I can go loop wise before they lose gain. The trick is keeping the loops perfectly inline.

@simplydoge4730 27 күн бұрын

These russian pirates operate on the Inmarsat F4-4A Alphasat L-TAC transponder located roughly at 1.5528GHz. They do not transmit all the time, there will be breaks between the transmissions sometimes even days long. Depending on how they feel like you may come across spectrum painting (mostly pigs), NFM transmissions or just general transponder abuse with super wide FM signals.

@TechMindsOfficial 27 күн бұрын

That's it! I saw some posts on the FB group that someone had captured the spectrum painting.