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Call Sign : 163-CT-220...MW7TTA Posts : 2448 Times Thanked : 66 Join date : 2019-11-19 QTH or Location : Anglesey North Wales Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+. Age : 150
Subject: Topographic map Mon Aug 08, 2022 6:52 am
Found this on another forum but found out i was 24m ASL from it lower than i thought.
Victor, SangueG, Sharpshooter and Dino1962 like this post
Wireless Major contributor
Posts : 350 Times Thanked : 12 Join date : 2021-11-19 QTH or Location : Shrewsbury Equipment Used : kit
Subject: Re: Topographic map Mon Aug 08, 2022 7:28 am
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Last edited by Wireless on Wed Aug 17, 2022 11:07 am; edited 1 time in total
Wireless Major contributor
Posts : 350 Times Thanked : 12 Join date : 2021-11-19 QTH or Location : Shrewsbury Equipment Used : kit
Subject: Re: Topographic map Mon Aug 08, 2022 7:35 am
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Last edited by Wireless on Wed Aug 17, 2022 11:08 am; edited 1 time in total
Victor CT Directors
Call Sign : 26-CT-3228 / M7VIC Posts : 5296 Times Thanked : 339 Join date : 2019-11-10 QTH or Location : Bedford Equipment Used : Various
Subject: Re: Topographic map Mon Aug 08, 2022 7:39 am
I wouldn't worry Alan, I'm at not a dissimilar height as you but 60 odd miles away from the sea!! (Deep, dark hole that is Bedford.)
Luckily HF signals seems to be bouncing off the sky OK.
I posted this map a while back now when I was playing around with VHF/UHF contacts seeing where my line of sight was. Turned out I had a gap in the hills just SSW of me where I could get a signal into the Tring 70cm repeater the next county over which would then fire to my old friend in Milton Keynes the other county over. Up and down counties because there's a big hill between us!!!!
Alan Pilot Major contributor
Call Sign : 163-CT-220...MW7TTA Posts : 2448 Times Thanked : 66 Join date : 2019-11-19 QTH or Location : Anglesey North Wales Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+. Age : 150
Subject: Re: Topographic map Mon Aug 08, 2022 7:45 am
Morning Victor Don't remember seeing it sorry. I can zoom in and almost click on my roof lol. Always thought i was around 65m ASL.
Wayne A lot of mountains round this part to get over. But shows how strange radio is my m8 lives near the top of one i can see from my shack but can't talk on HF to him only 2mFM.
Victor CT Directors
Call Sign : 26-CT-3228 / M7VIC Posts : 5296 Times Thanked : 339 Join date : 2019-11-10 QTH or Location : Bedford Equipment Used : Various
Subject: Re: Topographic map Mon Aug 08, 2022 8:48 am
No need to apologise Alan, I think most would rather see such a useful resource posted a hundred times over than never at all. It certainly came in handy for me trying to figure out where I could fire line of sight transmissions to.
As for your friend with VHF contact but no HF the following articles might help a bit :-
Surface Wave Propagation
Skip Zone
Sharpshooter Major contributor
Call Sign : 163-CT-329 Posts : 470 Times Thanked : 13 Join date : 2022-04-05 QTH or Location : Flintshire Equipment Used : A growing list
Subject: Re: Topographic map Mon Aug 08, 2022 10:26 am
I was looking for one of these maps the other day so many thanks. I can remember using one many years ago when I dabbled with computers. I'm only 20m although I can see for miles east to west.
163m at my coastal retreat.
Andy2490 New Member
Call Sign : 108-CT-345 Posts : 30 Times Thanked : 1 Join date : 2022-05-01 QTH or Location : Newcastleton Equipment Used : Bearcat 980/ TTI 881
Subject: Re: Topographic map Mon Aug 08, 2022 3:21 pm
A great resource, I've seen others but this one is by far the easiest to use. Many Thanks
Wireless likes this post
Wireless Major contributor
Posts : 350 Times Thanked : 12 Join date : 2021-11-19 QTH or Location : Shrewsbury Equipment Used : kit
Subject: Re: Topographic map Mon Aug 08, 2022 3:25 pm
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Last edited by Wireless on Wed Aug 17, 2022 11:08 am; edited 1 time in total
Wireless Major contributor
Posts : 350 Times Thanked : 12 Join date : 2021-11-19 QTH or Location : Shrewsbury Equipment Used : kit
Subject: Re: Topographic map Mon Aug 08, 2022 3:28 pm
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Last edited by Wireless on Wed Aug 17, 2022 11:09 am; edited 1 time in total
Ivy Mike Major contributor
Call Sign : 26CT4113/G1HWY Posts : 390 Times Thanked : 10 Join date : 2021-05-16 QTH or Location : IO90uv Equipment Used : ICOM radios/antenna farm Age : 68
Subject: Re: Topographic map Mon Aug 08, 2022 3:31 pm
Always gone by OS map and the 50foot contour runs just to the west of my QTH. GPS seems to validate this so thats ok by me.
Alan Pilot Major contributor
Call Sign : 163-CT-220...MW7TTA Posts : 2448 Times Thanked : 66 Join date : 2019-11-19 QTH or Location : Anglesey North Wales Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+. Age : 150
Subject: Re: Topographic map Mon Aug 08, 2022 4:08 pm
He never fails.
SangueG Major contributor
Call Sign : 26-CT-3971 / 2E0LMI Posts : 1037 Times Thanked : 63 Join date : 2021-01-30 QTH or Location : Cirencester, Gloucestershire Equipment Used : Little radios, home-made antennas
Subject: Re: Topographic map Mon Aug 08, 2022 6:32 pm
Good site. I thought I was 115m, but looks I am more like 125m. Close enough anyways
Alan Pilot Major contributor
Call Sign : 163-CT-220...MW7TTA Posts : 2448 Times Thanked : 66 Join date : 2019-11-19 QTH or Location : Anglesey North Wales Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+. Age : 150
Subject: Re: Topographic map Sun Aug 14, 2022 7:37 am
A couple more maps you might find useful but you will know about them but just in case.
Today at 8:39 am by Stup
Subject: Topographic map 
