A VLF transmission on 14.2 kHZ - UK Vintage Radio Repair and Restoration Discussion Forum

raditechman · 9th Sep 2020, 8:28 am

For those who ,like to try and receive the SAQ transmissions here is another VLF transmission which would like reception reports, this time from a balloon aerial on 14.2 kHz

https://alexander.n.se/grimetons-sis...phere/?lang=en

John

Dave757 · 9th Sep 2020, 11:57 am

Hi John,

Many thanks for the link, I shall do my best to have a listen.

Kind regards
Dave G0ELJ

9th Sep 2020, 12:53 pm

I'll have a listen too.

Andrew2 · 9th Sep 2020, 1:10 pm

Funnily enough I've just been talking with a friend about this. I usually hear the SAQ transmissions OK on my homebrew LF loop and SDRPlay receiver, so I'm hoping the loop will work just a few kc/s lower. I don't think there's been any mention of the power level - obviously it will be a whole lot lower than the mighty Alexanderson beast!

Dave757 · 9th Sep 2020, 8:26 pm

Hi

Having had another look at the Alexander page, I think it will be very low power.

I had thought it was the antenna that the balloon was taking up, but the mention
that it will rise to 30km (around the normal bursting point for a High Altitude
Balloon) suggests a battery powered transmitter with a trailing antenna.

Still, you never know, it will be very interesting to see the results

Kind regards
Dave G0ELJ

Andrew2 · 12th Sep 2020, 4:02 pm

No reception here. I've been listening since 1200 hrs and not heard a sausage.

12th Sep 2020, 5:24 pm

I will be sending a "no signal received" report to them. Too much noise here.

9th Sep 2020, 8:28 am	#1
raditechman Heptode Join Date: Feb 2007 Location: West London, UK. Posts: 867	A VLF transmission on 14.2 kHZ For those who ,like to try and receive the SAQ transmissions here is another VLF transmission which would like reception reports, this time from a balloon aerial on 14.2 kHz https://alexander.n.se/grimetons-sis...phere/?lang=en John

9th Sep 2020, 11:57 am	#2
Dave757 Heptode Join Date: Apr 2009 Location: Scratby, Norfolk, UK. Posts: 650	Re: A VLF transmission on 14.2 kHZ Hi John, Many thanks for the link, I shall do my best to have a listen. Kind regards Dave G0ELJ

9th Sep 2020, 12:53 pm	#3
Guest Guest Posts: n/a	Re: A VLF transmission on 14.2 kHZ I'll have a listen too.

9th Sep 2020, 1:10 pm	#4
Andrew2 Nonode Join Date: Mar 2010 Location: Dukinfield, Cheshire, UK. Posts: 2,037	Re: A VLF transmission on 14.2 kHZ Funnily enough I've just been talking with a friend about this. I usually hear the SAQ transmissions OK on my homebrew LF loop and SDRPlay receiver, so I'm hoping the loop will work just a few kc/s lower. I don't think there's been any mention of the power level - obviously it will be a whole lot lower than the mighty Alexanderson beast! __________________ Andy G1HBE.

9th Sep 2020, 8:26 pm	#5
Dave757 Heptode Join Date: Apr 2009 Location: Scratby, Norfolk, UK. Posts: 650	Re: A VLF transmission on 14.2 kHZ Hi Having had another look at the Alexander page, I think it will be very low power. I had thought it was the antenna that the balloon was taking up, but the mention that it will rise to 30km (around the normal bursting point for a High Altitude Balloon) suggests a battery powered transmitter with a trailing antenna. Still, you never know, it will be very interesting to see the results Kind regards Dave G0ELJ

12th Sep 2020, 4:02 pm	#6
Andrew2 Nonode Join Date: Mar 2010 Location: Dukinfield, Cheshire, UK. Posts: 2,037	Re: A VLF transmission on 14.2 kHZ No reception here. I've been listening since 1200 hrs and not heard a sausage. __________________ Andy G1HBE.

12th Sep 2020, 5:24 pm	#7
Guest Guest Posts: n/a	Re: A VLF transmission on 14.2 kHZ I will be sending a "no signal received" report to them. Too much noise here.