February 7th, 2022 Today I had a talk about Aircraft Scatter with Michael, OE1CMW, who recorded it to produce a podcast for his series “ON AIR – Amateurfunk D-A-CH“. As it´s in german language, I keep this post in german. Heute habe ich mit Michael, OE1CMW, über Aircraft Scatter gesprochen. Michael hat das Gespräch für […]
October 22nd, 2018 As OK0EA was audible this morning on 23 and 13 cm I had a look for other, more distant beacons in OK. After noticing a very short and weak signal on 2320.9085 MHz, I monitored the frequency over a couple of hours and saw many doppler shifted traces, typical for aircraft scatter. […]
July 5th, 2017 After installation of new transverters for 23 and 13 cm with stabilized LOs a couple of months ago. I gathered some experience in using JT65C mode on EME. So I undertook a new attempt to receive and decode G8MBU via aircraft scatter today. As antenna I use a 3 m dish with […]
June 8th, 2015 A long time monitoring of the beacon F1ZMT in JN07CX via Aircraft Scatter on 1296.872 MHz shows asymmetrical reflections on most of the crossing planes. As the distance to the beacon is 624 km and it´s ERP of just 10 W (a panel antenna to the south combined with an omnidirectional big […]
May 5th, 2015 The monitoring of distant beacons can be a boring job, even when using the waterfall diagram of a SDR. I prefer SpecJT of the WSJT package in JT65c mode. It is much more sensitive and even at slow speed faint refections can be seen clearly. The example shows F1ZMT in JN07CX, 624 […]
March 17th, 2014 One of my favourite beacons to be watched via aircraft scatter is PI7ALK in JO22IP. The beacon is running 4 W to a 4 times stacked omnidirectional antenna as described in DJ9HOs “UHF Unterlage V” on page 1001. The design of the antenna is by DC0BV. More details and the history of […]
January 3rd, 2014 Thursday night I tried a QSO on 23 cm with DG2PU in JO30PH, what´s a distance of only 80 km. Unfortunately Thomas is located down in a valley with Taunus and Hunsrueck mountains between us. His neighbor Marcel, DK7UP is closed by, but up on a hill. While it´s no problem to […]
QSO Procedure for Airplane Reflections Airplane Reflections is the process of reflecting radio waves off the body of an aircraft in flight. Contacts may be made on any of the UHF or Microwaves bands with distances up to 800 kilometres or so away. (The higher the frequency, the shorter the time you have.) As the […]
February 23rd, 2013 Frank, DL2ALF has written an amazing tool for aircraft scatter prediction, called AirScout. Positions of planes are shown in a map like at http://planefinder.net or http://www.flightradar24.com, but in addition the path and the part of it, where planes could be seen from both stations will be marked. Frank is using open street map […]
August 27th, 2012 In the evening I had the dish pointing to the moon to perform some echo tests. After finishig that, there was some office work to do. The pc was still tracking the moon and showing the spectrum around 1296.030 in a waterfall diagram. After a while I noticed a strong signal at […]