Some L band equipment/experiments:

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- Meteosat-7 was closed down years ago, but when totally accidentally using an old FM APT data file for testing, I stumbled upon Hurricane Epsilon that I had unnoticingly logged ;-)

- here are the images: whole disk view, D1 IR infrared image and D1 VIS2 visible image. There is a lot of information on Hurricane Epsilon on Wikipedia

- notes on modifying the XRF187S FET transistor from 950 MHz to 1.3 GHz

- an experimental ultralight 1.3 GHz LHCP square helix (57k) for Nadir ATV transmission from the Ilmari project

- some highly experimental (!) 2.4 and 1.3 GHz can feeds for dishes :-) - some notes on modifying the Fujitsu FMC080901-70 hybrid power amp to 1.3 or 2.3 GHz (in Finnish)

- an experimental ( 22k ) 5/4 lambda J-whip with a simple feed ( 26k ) for 1269 MHz ( 11 k )

- LARGE file on an experimental 1.7 GHz METEOSAT preamplifier ( in Finnish )

- several GaAs-FET and P-HEMT LNA's for EME and troposcatter experiments

- a 1.4 GHz LNA, 1420 MHz BPF and downconverter (114k) to 28 MHz for SETI League Project Argus and Radio Astronomy

- the 1.4 GHz LNA: plot of noise figure of 0.5 dB (6k), a drawing of the mechanics (13k), input matching 0.5 dB ! (9k) and finally a photo (75k)

- prototyping for the OH2AXH 200 W broadband SSPA using 16 * M57762 ( 99k ) hybrids

- the OH9SHF beacon ( 36k ), QRV since ~1994

- another CW beacon ( 26k ) for 1296 MHz, 2 W out, not QRV yet. The antenna is being built by Arto, OH2KTB

- AMATV and FMATV transmitters and receivers ( 37k ), including 10.7 MHz 2 Mbit/s data channel

- a 50 W FMATV TX ( 69k ) and matching RX for our group. This is used on our 3 m dish -mechanics by OH5ZB - tnx !

- 1.7 GHz METEOSAT receiver ( 94k ) with LNA for use with a 120 cm dish and PC software decoding

( our group uses it with the 3 m dish you can see here, 94k . The LNA is mounted behing the dish )

- 1.7 GHz low f/D dish feed using a 5 kg industrial kitchen pineapple can ( comes with radome ! )

- 1.3 GHz low f/D dish feed using a 10 l industrial kitchen cooking oil can ( comes with handle ! )

- my 1.3 GHz dipole mat (93k)

- a photo of my makeshift 1.3 GHz (100k) feed made for temporary use in a contest...

- the coax radiator (73k) inside the rusty old can - worked about 300 km with this :-)

- and finally a more scenic view (73k) towards the south pointing direction


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Updated 17.11.2011