Eduard, ON1AB recently posted a video on YouTube showing a remarkable contact he made on the 70cms UHF back in October of 2023.
Using a Radioddity GD-77 handheld and a small 3-element antenna for the 70cm band, he managed to make a contact through a UHF repeater in Ireland, a distance of some 2225 kms.
As can be seen from the photo, ON1AB was looking over the Atlantic Ocean at a location called Boca do Risco which is 340m above sea level.
The repeater in Ireland is EI7MHR on a mountain called Mullaghanish which is 649m ASL.
Callsign: EI7MHR
Location: Mullaghanish, Co. Cork.
Locator: IO51KX
Output: 430.875MHz
Input: 438.475MHz
Shift: +7.6MHz
Access: 103.5Hz
Location: Mullaghanish, Co. Cork.
Locator: IO51KX
Output: 430.875MHz
Input: 438.475MHz
Shift: +7.6MHz
Access: 103.5Hz
You can see the video below. The Irish station is Hugh, EI2HI who is mobile at the time.
The propagation mode was marine ducting with the signal getting trapped which allows for some staggering distances on the VHF & UHF bands.
While there have been openings on the 70cms band from Ireland to Madeira Island in the past, it is still remarkable seeing someone making a 2225km contact with a handheld radio and a small beam.
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1 comment:
every repeater uses vertical antennas. his pretty 3 elements was horizontal and was loosing a lot of dB and despite that loss he did it! wow! what a duct! :)
Gianfranco iu1dzz
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