Technical Topics > Propagation

Propagation Path or Equipment?

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ChrisSmolinski:

--- Quote from: alpard on July 01, 2020, 1628 UTC ---What is the best SW schedule site? The one I am using is, these ones

I was wondering if there are something better = more up to date and accurate.
--- End quote ---

Well I am partial to the one built into DX ToolBox, probably because I wrote it  :)  https://www.blackcatsystems.com/software/ham-shortwave-radio-propagation-software.html

Coincidentally, I am currently working on a real time schedule page for the HFU, it is still under development, but you can play around here: https://www.hfunderground.com/on_the_air/update.php

alpard:
Thank you for the link. Yes will visit there, and see how it goes.
By the way, the Kiwi SDR site uses a WellBrook ALA100LN Loop.

Your radios & antenna system look impressive too. Great stuff.

ChrisSmolinski:

--- Quote from: alpard on July 01, 2020, 1628 UTC ---Yeah, it is not the antenna, because there are definitely days that the Wellbrook Loop powered KIWI SDR sites cannot copy it either depending on the propagation on the day.  But it seems the WELLBROOK Powered SDR site has been more consistently receiving the 15575 RoK  well.  I have been monitoring the site for many days now for the program. Also I think that the Wellbrook loops is about 15m above the ground clear from any obstruction.  But then there are guys running the Wellbrook loop attached to the wooden fence in the garden almost ground level, and working all the DXes.

--- End quote ---

I would not immediately rule out the antenna you are using just because the KiwiSDR cannot receive the station on some days. Being able to receive a station depends on a few things. First there's propagation, is the signal actually reaching your area from the transmitter, and how strong is it? Then there's the receiving setup, antenna and radio. Along with local noise levels.

If you check out a number of KiwiSDRs, which all use the same radio of course, you will see a huge variance in their quality, how good they are. This is a function of the antenna as well as the local noise levels. They could be in a RF quiet area but have a lousy antenna. Or they could have a great antenna but be in a very RFI filled environment. Or both  ;D  Either means poor reception. And of course most antennas are good only on some (maybe small) part of the spectrum. It could be great on the lower bands but terrible on the higher bands. Or vice-versa.

chanito:
DX Toolbox looks to be a lot of bang for the buck. Wish I'd noticed it earlier.


I use Dxtreme begrudgingly purchased solely for the click to tune Station Checker functionality that I missed after the king of shortwave tools, Bob Sillett N3OEA's "Shortwave Log", stopped working after Win 7. Not into logging as much as hunting and listening here.

Josh:
Not much can beat a vertical antenna for dx. Verticals offer an improved low angle of reception over a horizontal antenna.

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