My 130 ft. long-wire (http://myantennas.com/wp/product/efhw-8010/) set about 4 meters off the ground is used primarily for 80m NVIS.
However, on 10m it is heard by NO-84's PSK31 repeater very well and not just directly overhead. I've gotten into it as low as 10° elevation and am almost always solid into the satellite somewhere around the 20° - 25° mark on both sides of a pass.
So, at least at 28 MHz, the signal from a low antenna certainly gets up into space.
-Scott, K4KDR
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On Thu, Apr 11, 2019 at 2:02 AM Hans BX2ABT via AMSAT-BB amsat-bb@amsat.org wrote:
I wonder is an NVIS antenna would be useful here. Unfortunately my AS-2259GR only goes up till 20 MHz (with tuner).
On 04/11/2019 07:27 AM, Ray Soifer via AMSAT-BB wrote:
IARU has coordinated two Chinese satellites, expected to be launched
later this year, which will carry 15-to-10-meter linear transponders. If successful, these will be the first use of 15 meters for a satellite uplink since RS-12/13 went silent in 2002. Operation of the earlier RS birds enabled much DX to be worked on otherwise dead bands. More info to follow.
As a reminder, DX worked via satellite counts for Satellite DXCC, but
not for other DXCC awards.
73 Ray W2RS