Sinager (IZ0MJE)

Doing things with radios and computers. Studying intelligence through the cold war. Specialization Is for Insects.

[Andrea Borgnino IW0HK @aborgnino]

«Salviamo la presenza della radio nei nuovi modelli di auto»
Campagna di comunicazione #RadioInAuto per richiamare l’attenzione sull’accessibilità in tutte le auto. https://t.co/eLlwUEo3Wl

[Sinager (IZ0MJE) @SSinager]

@alpha_adhito @lambdaprog @airspy_com Yes, plenty. Almost any CB radio today has some trick to put it in "export" mode, covering up to 24-30MHz spans.

[Sinager (IZ0MJE) @SSinager]

@ZhaoFen37759626 NE32584C has "D" marking and similar application.
Google "Franco board" for literature

[Sinager (IZ0MJE) @SSinager]

Mini AZ-EL rotator in progress.

Arduino Mega with the amazing K3NG software
LCD & button shield
Cheap tilt & pan mount
L298 H-bridge
HMC5883L digital compass
ADXL345 accelerometer

[Sinager (IZ0MJE) @SSinager]

@vittben No clue. Pity I didn't think about following it and see if there was a repeating pattern.

[Sinager (IZ0MJE) @SSinager]

Adding to the catalogue of #QO100 #interferences #QO-100

[Sinager (IZ0MJE) @SSinager]

@vittben Riusciamo a darci uno sked? Anche con @aborgnino @Chris_Diemoz

[Sinager (IZ0MJE) @SSinager]

@BoscoMac WiFi ?

[Sinager (IZ0MJE) @SSinager]

Measure taken with 40dB attenuator, so about 4dB gain.
Also idle current doesn't match datasheet typical data.

[Sinager (IZ0MJE) @SSinager]

While looking for a small driver amp at 2.4GHz I found these RF2126 based devices. First one was DOA. Second had negative gain at 2.4 and almost 10dB gain at 1.296 GHz.

[Sinager (IZ0MJE) @SSinager]

Input and output capacitors don't match the small application note on the datasheet. Replacing them with something closer at least brings in positive gain field. Input return loss still to be worked on, as 0.5 is bad even for a bodger like me.

[Sinager (IZ0MJE) @SSinager]

@CyberAntani Version designed for Canada

[Sinager (IZ0MJE) @SSinager]

Impressed by the €4 Pixie kit. A skilled CW operator (not me) will discriminate the right signal in the wide bandwidth. I cheat using the pc but a small bandpass audio a filter can easily be added.

[Sinager (IZ0MJE) @SSinager]

@vittben @ibelings Grande!

[Sinager (IZ0MJE) @SSinager]

@vittben @ibelings Grazie, non è il caso di rischiare il danno: speravo si sfilasse.

[Sinager (IZ0MJE) @SSinager]

@vittben @ibelings Bellissimo! C'è per caso modo di farne una scansione per costruirne una copia?

[Sinager (IZ0MJE) @SSinager]

Surplus parts compulsive shopping.
Anybody needs 1GHz low pass filters?

[Sinager (IZ0MJE) @SSinager]

Opening requires some work, as screws are potted in epoxy