Teledyne LeCroy HDO4024 Teardown
Since the text-blog article about me tearing down my Teledyne LeCroy HDO4024 was so successful, I decided to shoot a video with a more detailed teardown. Here it is:
Electronics
Look Inside: Teledyne LeCroy HDO4024
True beauty lies within, or so they say. For an exclusive look under the hood, I decided to break the warranty seal on my Teledyne LeCroy HDO4024. It took me a while to debate with myself whether or not I should void the warranty on this scope. Curiosity won and I couldn’t resist, I just … [Read more…]
IC-706 MKII Extended Tx Modification
Expanding the transmit range of an amateur radio transceiver is probably the most common modification. Because of its use associated with the Military Auxiliary Radio Service (MARS) or Civil Air Patrol (CAP), this modification is often referred to as MARS or CAP mod. This article shows how to perform this extended transmit modification on the … [Read more…]
Review: ADSP-BF592 EZ Lite Kit
Blackfin processors from Analog Devices (ADI) precede their reputation. Anyone who has even remotely thought about Digital Signal Processors (DSPs) has come across ADI’s Blackfin processor series. ADI considers the BF592 as the low-cost entry point into the Blackfin portfolio of processors. To make evaluation a piece of cake, ADI offers the BF592 EZ-KIT Lite … [Read more…]
FT-101E and IC-718 Repair Impressions
Over the past weeks I had KF5FBR’s Yaesu FT101E ad N5WSA’s Icom IC-718 on my bench for various services. The FT-101 needed a general health check and brand new capacitors. No output powers was the problem the IC-718. The latter was caused by burned out final transistors. While working on them, I shot some pictures … [Read more…]
L-Network impedance matching
Impedance matching is an everyday problem for RF circuit designers. The L-Network is one of the easiest lossless ways of matching a low source impedance to a higher load impedance. This article shows how they work and how to design them. Matching a transistor amplifier’s low output impedance with the higher impedance of an antenna … [Read more…]
Review: Abracon MEMSpeed Pro II Programmer / MEMS Oscillators
Most circuit design engineers know this problem. They seem to have an inexhaustible amount of oscillators with all kinds of frequencies available, but there’s always one frequency that seems to be unavailable: the one they need. Abracon offers a variety of low-cost MEMS oscillators that can be programmed for a wide range of frequencies. When … [Read more…]
12-bit vs. 8-bit – What’s the difference?
Teledyne LeCroy and Agilent offer brand new 12-bit oscilloscopes and promise clearer, crisper waveform displays than an 8-bit oscilloscope can deliver. But what does it really mean for a real world application to have 12 instead of 8-bit resolution? I have no idea if that was just my perception or if the year 2012 was … [Read more…]