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Και η <b>ΤΕΛΙΚΗ</b> εκδοση (V1.2), απο εδώ και πέρα μονο διορθώσεις (αν και το δοκιμασα εκτεταμένα).<p>Περιληπτικά οι λειτουργίες:<b><br>LOGBOOK</b>: Εισαγωγή και …

Download for free TABBY EVO - Open Source Vehicle

Slim Jim / J Pole Antenna Calculator

Before we start, be prepared to experiment! The calculator will get you close (or spot on if you’re lucky), but there are so many variables. You can …

Breadboard header for ATTiny 25/45/85 - Electronics-Lab

This handy breadboard header for ATTiny 25/45/85 microcontroller is a new design based on the original idea from Tinkerlog. Maybe the most useful …

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Supermate DC-6 charger “USB” port – NOT!

As part of a plan to upgrade a couple of 18V NiCd powered devices to LiPo, I just got a Supermate DC-6 charger from HobbyPartz. Pretty flexible, …

Mare & Gal Electronics » Blog Archive » Raspberry Pi + RTL SDR dongle = APRS Rx only gate (Part one – FM Radio)

Introduction<p>I have couple of raspberry pi’s laying around doing nothing useful. I decided it’s time to use it better than dust collectors. This …

Wobbler with AD9850

<b>Wobbler & generator with PC controlled DDS <br>Dr. Peter Halický, OM3CPH, Peter Halický, Jr., OM2PH</b><p>Fig. 6: PCB of A/D converter with amplifier (2,3 x 3,9 …

Purpose VFO

The Frequency instability in VFO stage is a common problem. This is usually occurred in VFO's due to low “Q” of the tank circuit, capacitors real …

An Altoids Tin Low Pass Filter For Shortwave Transmitters

In my last post, the Michigan Mighty Mite was discussed; a very simple shortwave transmitter that puts out about a half a watt on several HF bands. …

You might want to measure inductance of hand-wound toroidal coils or surplus canned coils. A simple inductance meter made of cheap computer crystal …

NorCal 49er QRP Eagle PCB

This is the PCB design the NorCal's 49er QRP 40M CW transceiver. The original design can be found …

STM32F4-Discovery tutorial with Visual Studio

Start Visual Studio. Select File->New->Project.<p>Select VisualGDB -> Embedded Project Wizard. Pick a directory and a project name:<p>As we are creating a …

RF386

<b>Note: The low-pass filter values for 21-28 Mhz are incorrected. They will be uploaded after testing the filter</b><p>RF386 is the Minima's companion RF …

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VFO Page

This VFO has excellent short and long term frequency stability and the measured output voltage was ~6 dBm. While the output voltage was less than …

30 m Band Direct Conversion Receiver

Bliss Radio QRP Kits

Ham Band: B1: 7.000 - 7.300 Mhz<br>B2 14.000 - 14.350 Mhz<br>General Coverage Band (GENE) on DDS<br>B1: 4.000 - 7.500 Mhz<br>B2: 7.500 - 14.500 Mhz<p>Panda Mono Band …

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<b>GMNA Engineering Centers<br>General Motors Corporation</b><p>January 2002 Issue<p><b>Radio Telephone / Mobile Radio Installation Guidelines</b><p>Certain radio telephones or …

Chip Tuning LAda Niva 21214

Hello Guys,<p>I need your help.<br>I want to tune the chip of my Lada.<br>I have 2 Bosch ECU, MP7.0H and ME 7.9.7<p>What I need to dump, modify, and Flash my …

Conquer Cold With DIY Hand Warmers

Keeping warm with chemistry<p>Cold weather makes for cold hands—unless, of course, you have a hand warmer. Don’t waste money on those cheap disposable ones. Instead, use kitchen chemistry to make your own reusable versions.<p>When vinegar and baking soda react, they form a compound called sodium acetate. …

Filter Designs in Minutes with Filter Designer | WEBENCH® Tools

Active filters are vital in modern electronics; every data acquisition systems need them for bandwidth-limiting signals before ADCs as anti-aliasing …

SDR HF receiver design

In this page I will briefly describe the design of a simple but decent HF Software Defined Receiver, SDR. I am not going to invent anything, it is …

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