Category Archives: Reviews and Tests

SSTV images for testing radios / software and compare quality

SSTV is a form of encoding allowing You to transmit pictures over virtually any transmission medium that allow uncompressed human speech – starting from phone ending on  SSB radios. It’s similar to  “fax”  that was used over landline.


For testing i decided to record couple of SSTV sample audio files using different encoding to compare quality.

The slower (longer time) works better on noisy frequency like SSB.

Quicker one working perfect over AM/ FM.

Here are files for testing, You can decode them from “speaker” using Android smartphone and application called “Robot32” <- don’t let name mislead You, it decode all modes used here!


What’s inside ABBREE 47cm SMA-Female Dual Band VHF UHF 144/430Mhz Foldable CS Tactical Antenna For Walkie Talkie Baofeng

Teardown to see what’s inside:

Teardown of RT4 Radio Tone battery 4600mAh for Zello PTT smartphone

This is good real capacity battery.


What’s inside SignaLink USB Interface – Tigertronics

When i was making jumper connectors to set up SignaLink i decide to take couple pictures and show You what’s inside.

Radio Tone RT5 Android Zello PTT mobile radio – quick look at car network radio

Quick testing of RadioTone RT5 Zello PTT mobile radio (it’s dedicated to use in car but in mine application will be a base station).
First impression is good, very loud and clear audio , remind me very much DMR Motorola DM4600 especial round mic connector plug… and i like it 🙂
Keep in mind this is not a DMR radio, just android smartphone.

Vintage Psion Series 5 Palmtop Handheld Computer PDA with Epoc OS

Video and Pictures 🙂


TRI PRC 152 inside pictures and compare real army microphone connector

Couple pictures of tear down TRI PRC 152 and check if possible to replace audio accessory connector with real one.

Why always double check (cheap china antenna) before connecting up to radio!

Description says it will fit DP3600 but how about reality?



“Steel ball monkey fist” self defense keychain from China vs reality




and video

Warning: Undefined array key 0 in /www/wwwroot/ on line 602