10 GHz rainscatter with DB6NT transverter at LA3EQ, Norway

Receiving rainscatter indoors...3 cm band.
IF rig is HTX-100 10meter transceiver.
Dish is a Ikea aluminuim "fruit dish" 38cm diameter and JWM 5GHz PLL local osc and Isoterm 10MHz ref osc.
Window shade as varible attenuator! If the beacon was vertical polarized, then no signal would come thru. "http://home.no.net/jhhl/egne"

Category:

Science & Technology

Tags:

• ham
• radio

[lustrup]

Radio signals scatter by rain dropplets.

[tfreakvids]

If you attached a BFO or listened in CW mode, it would sound like regular CW.

[lustrup]

I is in CW mode....the clear tone is scattered by doplershift from raindrops...

[lustrup]

It is a true CW transmission, no AM og FM modulasjon....but the transmitter is beyond the horizian and can only be heard via rainscatter (they distort the sound by many doppler reflections,almost like VHF CW/SSB signals received via Aurora, Northern lights).

Jan LA3EQ

[tonijn1969]

why u use amplitude modulation,i hear no beeps

gud luk

73's PA1403 Gerard

[lustrup]

@tonijn1969

I use SSB modulation not AM. The beeps are destorted av raindrops scattering the CW tone.

[Leighroy207]

Great video, thank you. De VK2KRR

[uploadJ]

Very cool demo; witnessed a plethora of RADAR signals above 2.7 GHz (meteorological WSR-88D plus airport ASR-9's and ASR-11's) last year on a spectrum analyzer with a preamp during a heavy rain period here ... will have to go amateur radio beacon hunting the next time it rains!

Also, confirming: This is Doppler spreading of what was originally a pure "CW tone" when transmitting BUT the raindrops add different velocities to the RF when it reflects the RF sig .. WSR-88D sees the same phenom ..

[conoba]

What is rainscatter?

[tfreakvids]

In true CW mode the tone is generated in your receiver after its received.  There is clearly a carrier there. Are you sure this isn't CW over FM or something like that? Sorry, I just don't understand.