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Antennas : Baluns- BalUn for Delta-loop & Quad-loop antennas
- This Guide helps you to build the 1:2 BalUn 600 Watts DIY kit step by step. If a delta-loop or quad-loop antenna is powered with a coax cable from the transceiver it is necessary to use a 1:2 BalUn. This 1:2 BalUn uses a symmetrical 1:2 impedance transformer.
[ Hits: 286 | Votes: 1 | Rating: 9 ]
- Semi-automatic antenna tuner project
- Thsi article describes a microcontroller driven semi-automatic antenna tuner capable of handling power levels up to 150 watts. The device is a low pass filter tuner manually tuned by setting the optimized L/C combination by hand and then storing the values into the EEPROM of the mictrocontroller to recall them later (seperately for each band from 80 to 10 meters including WARC bands)
[ Hits: 291 | Votes: 0 | Rating: 0 ]
- 100 Watts and a Wire
- 100 Watts and a Wire is a ham radio talk show was originally launched as an audio podcast on June 22, 2015. Today, you can see the show on YouTube. It features topical conversation, interviews and ham radio news. You can listen anytime by subscribing wherever you get podcasts.
[ Hits: 129 | Votes: 0 | Rating: 0 ]
- PolEx Technologies
- Makers of the The Polar Explorer transmitter, which operates on 9 HF bands from 160 through 10 meters and is capable of 500 watt peak output power on SSB, CW, AM, FM and RTTY. It is intended to be used in conjunction with a transceiver.
[ Hits: 501 | Votes: 0 | Rating: 0 ]
- QRP - Low Power Operating ARRL
- QRP is a way of operating that involves using low power transmitters, that are no more than 5 Watts for Morse or data modes, or 10 Watts pep for voice. Introduction to QRP operations
[ Hits: 73 | Votes: 1 | Rating: 8 ]
- ZL2IFB Elecraft K2 K3
- A page dedicated to the Elecraft K2 and K3 transceivers, Connecting the K3 to your PC
Useful K3 features, K3 REF CAL re-calibration of the VFO frequency, W2 wattmeter, KPA500 QSK amplifier
[ Hits: 104 | Votes: 2 | Rating: 10 ]
- 100 Watt RF Power Amplifier for 2 GHz
- Modification to an old cellular phone base station modules, with a fairly reduced output power (10 watts or so), the stock power amplifier modules will cover the 2.3 GHz and 2.4 GHz amateur radio bands.
[ Hits: 160 | Votes: 0 | Rating: 0 ]
- 432 MHz 100W RF Power Amplifier
- This article describes the construction of a 100-Watt, 70 cm amateur band linear power amplifier. It is the result of a protracted period of experimentation during which I investigated a number of final amplifier stages from obsolete UHF FM 2-way radios.
[ Hits: 239 | Votes: 1 | Rating: 9 ]
- 100W UHF Linear Amplifier
- This page details my building of a 100 Watt Power Amplifier for the 432 MHz Band based on two Motorola MRF646 transistors taking inspiration by Carlo Gnaccarini VK3PY, formerly VK3BRZ
[ Hits: 193 | Votes: 0 | Rating: 0 ]
- Homebrew 1 Watt 2.4 GHz Power Amplifier
- This will show you how to add a RF power amplifier to your Proxim Symphony for under $50. The cost is reduced by using the existing components on the Symphony, such as the PIN diode switch, and just inserting a higher power final amplifier.
Increase the RF output power of your wireless network card to 1 Watt.
[ Hits: 159 | Votes: 4 | Rating: 6.5 ]
- TE Systems 6 Meter Amplifier Review
- TE Systems 0510G 50 MHz meter amplifier set up for 10 watts in and 170 watts out.
[ Hits: 157 | Votes: 2 | Rating: 5 ]
- Online dBm to watts conversion
- dBm to watts conversion calculator and explaination on how to convert dBm to watts, including dBm to watts conversion table
[ Hits: 131 | Votes: 4 | Rating: 4.5 ]
- mW to dBm Calculator
- Online calculator that will convert power entered in milliwatts to dBm. Includes a quick mW to dBm conversion table
[ Hits: 82 | Votes: 0 | Rating: 0 ]
- Dummy Load Construction
- This will document a custom version of the K4EAA Dummy load done using 20 1K ohm 3 Watt Resistors, Piece of brass sheet, a quart paint can and a BNC connector
[ Hits: 187 | Votes: 1 | Rating: 5 ]
- Homebrew a High Performance SSB RTX for 14 MHz
- This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.
[ Hits: 346 | Votes: 5 | Rating: 7.8 ]
- Experimental HF 6-band SSB transceiver
- An SSB radio for the HF bands will be presented. Featuring 12 to 20 Watts of output power (depending on DC supply), full DDS frequency generation, covering 6 major frequency bands (1.8, 3.5, 7, 14, 21 and 28 MHz) within the short wave amateur radio spectrum. The rig also features colored LCD and front panel backlight.
[ Hits: 709 | Votes: 14 | Rating: 9.86 ]
- A Three-Band One-Tube Novice Transmitter
- A homebrew radio transmitter project, based and inspired by the original 30 Watts input on 80 50 and 15 meters band transmitter by W11CP
[ Hits: 345 | Votes: 2 | Rating: 10 ]
- Gimme Five - QRP SSB Transceiver
- Gimme Five reloaded, a compact 5 band QRP SSB transceiver in SMD technology. This unit covers 5 bands within the amateur radio spectrum (3.5, 7, 14, 21 and 28 MHz). Receiver is a single conversion unit with an interfrequency of 9 MHz. Transmitter uses 5 stages and has got a power level of 10 watts PEP output.
[ Hits: 285 | Votes: 1 | Rating: 10 ]
- QRP 20m Transmitter
- The 1 watt 20 meter QRP transmitter with VXO. This is a nice QRP transmitter that can be used in combination of one of the simple receivers.
[ Hits: 151 | Votes: 0 | Rating: 0 ]
- 17 meter QRP Transmitter
- 1-watt 17-meter cw transmitter that was originally done about 10 years ago as a club project for RAMS, the Radio Amateur Megacycle Society. It uses a VXO, rather novel at the time. It also uses a bandpass filter at the output rather than the usual lowpass
[ Hits: 122 | Votes: 0 | Rating: 0 ]
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