Lithuanica Cube Sat repeater by LY3 H

Lithuanica Cube Sat repeater by LY3H    Zilvinas

QRP Laser AM ATV Beacon

With 50 Mc modulator

50 MHz LASER AM ATV

N6IZW Kerry O. Banke idea AM ATV 4-5 Chanel, works well. Color , stable signal given in 6m. Distance is limited by laboratory space :)

LASER FM ATV RX

LASER  FM ATV RX  very simple RX....with Slope FM detector.

Paprastas FM  RX trys kaskadai FET ima labai maza srove . Patobulintas dijodu D2  "Slope  FM detector" D2  1N34 germanio dijodu, paryskino vaizda, pradeda veikti is kart, ne taip kaip NE564 FM detektorius. Gal kiek per sudetingas de emfazis, galima padaryt paprasciau. Tobulejimui ner ribu :)  D314 germani galima pakeisti AA138 , neturtingesniem  tiks  D9......dijodas.

PAL color video bar generator with ATTINY2313

Here's a cheap and simple composite PAL color video bar generator made by Vassilis Serasidis.
http://www.serasidis.gr/circuits/colour_bar_gen/colour_bar_gen.htm
He used now hard-to-find AT90s2313. I decided to use it's replacement ATTINY2313.

Both firmwares on author's site are working OK as they are. I only had to use these fuses:

Great circuit!

LASER FM ATV TX

DJ1WF Wilfried  FM ATV ideja, pasieke  apie 80 km rezultata. Neseniai rezultata FM ATV pagerino TX puses Martin DL8TP , Juergen DL8TO  is RX puses Marita DC3IT, Nobi DF6IY, pasieke 100km, pasaulio rekorda. Kaip juokauja rekordo autoriai , padejo geras vynas, ir Shilerio patarimas "wer nicht wagt, nicht gewinnt" .... jei nesieksi , nieko nepasieksi. Lygioje kaip stalas Lietuvoje , rekordu nebus, bet pakaks gero alaus, ir pabandymo siekti, kad kazka pasiekti . Ta intencija pagamintas kuklus TX . Reikalinga , tvarkingai pamazinti video lygi iki 50mV , nuo 2vpp,pagal reikalingas taisykles ,galetu buti paprastesnis pre emfazis . NE 564 mikroschema , naudojama neracionaliausiu budu. Tikslinga  butu kitoks VCO

LED AM ATV RX-TX

Simple 400  THz  AM ATV  RX-TX

"Rinkinys skautui" - labai paprasta amplitudines televizijos  schema. Gali pakartoti bet kuris .... Geltonas LED spindulys , koncentruotas su "lupa" gerai matosi uz 50m . Su Fresnelio linze rezultatas butu dar geresnis. Jei spindulys matosi ryskiai , tai ir TV signalas bus matomas gerai. Belieka pasigaminti patiems ir sita teigini patikrinti. Jei vietoj LED idesite "laser pointer" tai su televizijos RX ir monitoriumi , teks begti tolyn keleta km.

This circuit is very easy to repeat - would be great kit for kids. Yellow LED is visible in 50 meters range if magnifying glass is used. With Fresnel lens (cheap rectangular A4 page magnifier) the range would be even better. If the beam is bright then TV signal is OK too. If you change LED with a laser pointer then you'll have to go few kilometers away.