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von PE1CMO
25.02.2019, 15:38
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

eine block diagram for a simplex transverter. (if you like duplex, make a TP at 739 MHz for the SDR receiver)
blokschema transverter.JPG
von PE1CMO
21.02.2019, 17:25
Forum: Projekte
Thema: Dual feed for Es Hail
Antworten: 0
Zugriffe: 1979

Dual feed for Es Hail

Some Dutchies works simplex via one antenna and a dualband feed. Remco PA3FYM makes this feed for me.
The design is from G0MJW, PA3FYM and M0EYT.

For 2,4 GHz a circulair polarized feed, for 10GHz a round waveguide for receiving.
qo-100-dual-band-dish-feed.pdf
(1.26 MiB) 251-mal heruntergeladen
von PE1CMO
21.02.2019, 13:40
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

antenna at the roof with dualband feed.
IMG_1088 (Medium).JPG
IMG_1089 (Medium).JPG
von PE1CMO
21.02.2019, 09:59
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

Dualband antenna. Remco PA3FYM has make a dualband antenna. This is a Circulair polarized patch antenna for 2.4 GHz, and with the waveguide in the centre also a feeder for the LNB. With this antenna it is possible to transmit and receive at the same time at the same antenna. Also to make simplex con...
von PE1CMO
20.02.2019, 18:48
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

Here the Dutch version of the new LNB modification, note, I change also the 5V powersupply to a lownoise 5V external. Is give about 5 to 6dB better phase noise.
ombouw Inverto LNB.pdf
(848.44 KiB) 269-mal heruntergeladen
English version later
von PE1CMO
19.02.2019, 17:29
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

I heard that the Octagon Oslo is out of production ?

Today I received a other LNB, normal stock product.
It is possible to change the LNB easily. It is the Inverto Home pro 40mm LNB and costs about 13 euro (ex VAT)

I make a description later.

For amateurs who will contact me, rene.pe1cmo@gmail.com
von PE1CMO
11.02.2019, 17:38
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

Today in the morning, two Dutch amateurs has a QSO via Es Hail.
von PE1CMO
10.02.2019, 13:04
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

Modification of an Octagon Oslo LNB. When I opened the LNB and looked at the poor datasheet, I make a plan for conversion. The IC, with PLL and 9.750 Ghz oscillator is fed from a 7805 voltage regulator IC. These ICs are known for the high supply noise, and if you want to make a bad oscillator, use t...
von PE1CMO
09.02.2019, 20:49
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

The schematic of the down converter part. This is included the LNB reference oscillator ans 5V low noise power supply for the LNB.

If there is any interesting or for more information, pcb boards etc, rene.pe1cmo@gmail.com

eshail down converter met refer.pdf
schema.
(30.81 KiB) 271-mal heruntergeladen
von PE1CMO
08.02.2019, 14:27
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

Today I make the final measurements of the complete receiver part of my transverter. In the transverter I use a low phase noise Abracom VCXO for the 27 MHz LNB reference. This reference is locked into a 10 MHz reference at GPS. With the 27 MHz LNB reference, the local oscillator is 9750 MHz. The sat...
von PE1CMO
08.02.2019, 13:38
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV QO-100

I make a low budged amplifier for Es Hail. The board is normal FR4, input 40 to 50 mWatt and about 20 to 23 Watts out. I think that the total costs of the amplifier is about 50 to 60 euro. Here the board layout, dimensions about 50 x 60mm Amplifier is the BLM2425 from Ampleon. eshail amplifier.JPG
von PE1CMO
28.07.2018, 09:56
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E first Ham geostationary transponder SSB and DATV

The PCB board is at home. Now we must solder the components and half August I will test. This board includes a 27 MHz (25 MHz possible) low noise reference for the LNB, IF out 739.5 MHz GPS clock reference down converter from 739 MHz to 70cm input attenuator max 30 Watts for the 70cm tranceiver up c...
von PE1CMO
21.07.2018, 16:19
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E erster geostationärer Satellit

I try to publish photo's here, but the foto's give an error.

At the Dutch radio amateur forum I publish my idea's and experimental PCB board.

http://www.zendamateur.com/viewtopic.php?f=18&t=19932
von PE1CMO
10.07.2018, 20:35
Forum: Projekte
Thema: 26°E first Ham geostationary transponder SSB and DATV QO-100
Antworten: 66
Zugriffe: 35820

Re: 26°E erster geostationärer Satellit

Also in Holland there is interest in the upcoming Es'hail-2 satellite. On June 26th Remco PA3FYM gave a lecture about his philosophy and (working!) interpretation of an Es'hail-2 transverter for narrow band / weak signal usage in The Netherlands. He suggested the use of one GPS disciplined reference...