It is an excellent all-around 40 meter antenna for those who don't have room for or can't afford a yagi

How's this for no-frills hamming? this cute little 40 meter cw transmitter is nothing more than a 6aq5 oscillator coupled to the antenna, power output is on the order of 6 watt

I first saw such kinds of articles on japanese cq magazine or japanese ham journal no.65 in late 80's. i recognized that there was a trial of let's do the optimization of the antenna by using a computer

Before starting construction, collect all the parts to complete the 3 boards in the design: circuit boards, semiconductors, and surface mount parts, wire for inductors, xtal, toroid form, etc

Able to produce 20 A of continuous power at constant 13.8 volts,overvoltage protection, undervoltage protection, short circuit proof

PCAAD 7.0 is a Windows-compatible antenna analysis, modeling

Esistono numerosi tipi di adattatori, tipo uno spezzone di cavo coassiale della lunghezza di λ/4 d'onda

Amateur-radio-construction-projects

An-examiniation-of-the-gamma-match

A multirange meter can be constructed in two units

Practical microwave antennas provide high gainwithin the range of amateur fabrication skills and budgets

Antenna Modeling Software and Other Utility Programs

An antenna for the 11 meters in the attic

This 25 foot high antenna works great on 80m to 6m, and works well on 160m. on the entire 80/75m band the vswr is less than 2:1

When building an ATV Transmitter at 23cm, the need for a power meter for small powers arose

I stumbled on an article by a german ham and materials engineer

We go through putting together a solar-powered off-grid ham radio station ham shack

La costruzione di un condensatore variabile utilizzando delle comuni basette ramate per circuiti stampati ed una lastrina d'alluminio

The 50MHz-Yagis are designed with an impedance of 12.5 Ohm or 28 Ohm and some types with 50 Ohm impedance, the 12.5-Ohm-Yagis are designed with small bandwidth 300 KHz at highest

The antennas were designed with YagiMax, tweaked in NEC, and the driven elements experimentally determined on the antenna range

è un oscillatore Colpitts con bobine intercambiabil

L'elemento radiante è un triangolone di 6,7 metri per lato per un totale di 20,10 metri ed al centro della base del triangolo, realizzare un bobina fatta di 16 spire in aria - diam. 2 cm., lunga 10 cm<

Simple to build, high performance yagi and quad antennas

Description of some types of antenna

Lab bench device that counts signals from below 500mhz to above 12 Ghz

Was running 15W and using a home made transceiver

The material is feather-light, tough as a tank, and definitely UV-Resistant

A small 70cms antenna that could be pointed at the satellite

Homebrew RF Test Equipment and Software

Installing a long wire antenna when the only best way is to attach one end to a tree

Much of the coaxial cable used by hams has an outer diameter of 0.405", such as the popular rg-8 and rg-213 cables. is inexpensive and universally available, 1/2" heliax is perhaps the first cable you encounter as you start to increase the diameter, increasing the diameter usually

The circuit was built exclusively in cmos technology, the quiescent current of the entire electronics is typically 1 ua, switching off the device is not necessary because of the extremely low power consumption

Realizzare un LC meter portalile digitale, con l'ausilio di un microcontrollore

This version features a much simpler front end, an extended frequency range and a coarse calibration function implemented in software

Here is the description of a simple capacitance and inductance meter

Element losses are particularly important at the highest frequencies where yagi antennas are used for space communication because the sky temperature is very low

The test oscillator shown in here is a very handy thing that can be used to easily measure the inductances and a little bit of work on a calculator

Utilizza un circuito stampato a doppia faccia della dimensione di 73,6 X 48,2mm e display ad un digit del tipo TDSL 5150

A tutti quelli che hanno bruciato il commutatore di banda del TL-922

La causa del guasto, il ball retainer, che tiene equidistanti le sei sfere per ogni lat

Design a narrow-band optimized log-periodic dipole array which has the same or better performance characteristics

Amateur radio construction projects including qrp, homebrew and kits, special event operating across the uk

Speed range of 5 to 30 wpm operates in either iambic A or B mode, with B being the default 2 message memories

After some research on the internet, I decided to choose a simple solution where a zener diode is used as a noise source followed by a few amplifier stages with HF transistors

This fine project was found on Talino's site, IZ7ATH and works very very well up to about 35 Mhz

The inverted dipole is a very popular antenna. It's also known as a Inverted "V" antenna, the inverted antenna is a horizontal dipole with the ends tilted down to the ground, the angle between the two legs us usually between 90 and 120 degrees

The popular usage of the skew-planar an ideal due to its omnidirectional and circularly polarization

Questo semplice circuito è rivolto a coloro che desiderano gestire direttamente tutto il processo di rice-trasmissione della propria stazione, avendo costruito preamplificatori d'antenna, amplificatori lineari

UHF Series - RF Connection

If you want a top-performance vhf/uhf long yagi, why not build it yourself

When building antennas for the WiFi band such as the 8dBi omni, the need quickly arises to test these antennas in a simple manner

Disclaimer failure to install, maintain or use a Yagi antenna properly could result in serious injury or death, or damage to property

Easy to read digital multimeters from Circsafety features which help prolong the tool's life span. Both accurate and reliable, these multimeters are perfect for many electrical applications

This project is a simple LC meter based on PIC16F682A mcu