Mode Elektro L

Elektro-L: geostationary weather images (HRIT / LRIT) and GGAK (needs a dish and an LNA).

Group	Satellite & navigation
Default frequency	1691 MHz
Default sample rate	2.4 Msps
In the mode list	Weather images, 1691 MHz

Step-by-step: Tutorial-Elektro-L

What Elektro-L is

Elektro-L N3, N4 and N5 are Russian geostationary weather satellites. OnAir receives their L-band HRIT / LRIT images around 1691 MHz with the same chain as GOES, and the GGAK space-weather telemetry at 1693 MHz.

Frequencies and settings

Elektro-L N3 / N4 / N5 HRIT and LRIT on 1691 MHz (BPSK, Viterbi, Reed-Solomon, CCSDS xRIT at 665.4 k / 1 M / 128 k / 64 ksym/s) and GGAK space-weather telemetry on 1693 MHz (5 ksym/s PCM/PM).

Setting	Value
Start frequency	1691 MHz
Tuning range of the mode table	1670 to 1710 MHz
Sample rate asked	2.4 Msps
Lowest working rate	200 ksps
Channel width	1 MHz

OnAir takes any frequency you type; the numbers above are the mode's starting point and the range its table describes. In the app the shortcut label is Weather images, 1691 MHz.

What OnAir shows

A product list and image viewer for HRIT / LRIT (same xRIT path as GOES) and a GGAK frame log. Receive only. Needs a dish with an LNA at the feed.

Tips and caveats

• Checked with generated signals and impairments; recordings of real signals welcome.
• Which radio: Probably not: an RTL-SDR tunes up to about 1.7 GHz. A HackRF (1 MHz to 6 GHz) or another wideband radio is the usual choice for this frequency range.
• Try it without a radio: most modes include a built-in synthetic test signal, so you can open the screen and try the controls first.
• Receiving and the law: Receiving satellite downlinks is generally legal. Encrypted or spread content is not decoded, and voice codecs that are patented are not shipped with OnAir. See Legal.

Related pages

• Weather satellite images
• All modes, Satellite & navigation
• Supported radios, Troubleshooting, FAQ
• More in Satellite & navigation: GNSS, Inmarsat-C, Inmarsat Aero, Iridium, Meteor-M LRPT, GOES HRIT, Orbcomm, QO-100, CubeSat telemetry, Globalstar