Tuners

A T-Match ATU - An homebrew antenna tuner project

Dave's Homemade Antenna Tuner - A multi-use Antenna Tuner

Multiband wire antennas and ATUs - DC1YB experience on multiband wire antennas. In particular examine FD4 windom and G5RV antenna, considering noise levels and matching aspects. Author reviews also the usage of Automatic antenna tuners in TS-50 TS-480 and GC-3000

Do You Need an Antenna Tuner - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format

A *balanced* balanced antenna tuner - The published version of this article appeared in the February 1990 issue of QST Magazine

Remote Antenna Tuner - Remote antenna tuner

The Ultimate transmatch - Usage and benefits of transmatch. A pdf document from a QST article made available for novices and beginners by ARRL

A Portable Antenna Matching Unit - A small HF antenna tuner project for qrp operations. Includes circuit diagrams pictures and test results by GW4ALG

A Mini T match - KC8AON mini antenna tuner that tunes almost any antenna you connect to

How to Use an Antenna Tuner - Get maximum power to your antenna by learning how to hook up and use a tunner to properly "trick" your rig

A remote antenna tuner - Interesting project to remotely control, using a servo control circuit, a common commercial antenna tuner by N30X

W8ZR High-Power Antenna Tuner - This homebrew legal-limit antenna tuner is based on the famous "Ultimate Transmatch" introduced by the late Lew McCoy, W1ICP. The Ultimate Transmatch was described in the "Beginner and Novice" section of the July 1970 QST (Page 24).

QRP 20m Antenna Tuner Unit - A QRP antenna tuner for 20 meters band

Antenna Tuner Operation - Antenna Tuner operation, correct way to tune an antenna.

A Z match tuner for HF bands - This small tuner by KC8AON has only 2 controls and will tune almost anything from 10 to 80

G3EJS 2 Tuner for FT-817 - A small antenna tuner for the Yaesu FT-817

A Multi-type "one-box" Antenna Tuner - This antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks.

L Network Antenna Tuner - L Network Antenna Tuner Project by K7SFN

Legal Limit L-Match Tuner - The match is built around a 35 uH roller inductor and 350 pF variable capacitor and is used to convert a 40m loop antenne to match 80 and 160

LF MF Antenna Tuner - W5JGV antenna tuner for 150 - 500 Khz band

Link Coupled Tuner - Legal Limit Link Coupled Balanced Tuner,for the amateur ham radio HF bands. This Tuner uses plug-in Coils sets for 40, 80, & 160 meters

Link-Coupled Antenna Tuners - W4RNL tutorial on on inductively coupled (link-coupled) antenna tuners

MFJ-940 modification - The MFJ-940 VERSA TUNER II is a useful little antenna tuner for the HF-bands. However it suffers from a minor design error, which can be easily rectified.

Mini ATU - SP5DDJ mini antenna tuner for QRP operations

MT-3000A Modification - Article on the Dentron MT-3000A antenna tuner and some good modifications by W1AN

Murch UT-2000A Tuner Mod - Adding a bypass to the Murch UT-2000A Antenna Tuner

N4EKV.COM - Antenna Tuners - Homebrew balanced-L antenna tuner. Covers 160-10m. Designed specifically for balanced feedlines.

Pi-filter ATU for Beams and Verticals - A ATU for beam and vertical antennas by PA0FRI

Portable L-Tuner - A small, simple portable L-Tuner project by N6LEW

Putting a Balun and a Tuner Together - Two wire transmission line as a three terminal Device , The W2DU and W7EL models of a choke balun, The effectiveness of a balun. Article by Kevin Schmidt, W9CF

QRP 20m Antenna Tuner Unit - A QRP antenna tuner for 20 meters band

QRP 20m ATU - A handy little QRP Antenna Tuner designed specifically for 20m, although it works fine up to 10m.

QRP Antenna Tuner for 20 m - A small antenna tuner for 14 MHz

Remote Antenna Tuner - Remote antenna tuner

Remote antenna tuner controller - Software to remotely tune an HF antenna, included in help a principle hardware picture, by M.Recchia IK0VVE

Remote ATU - Remote control L match Aerial Tuning Unit

S-MATCH Universal ATU  ^updated - PA0FRI's "S-MATCH ATU" published in RSGB's RadCom March 2003). The Balanced Universal ATU Photographs of ZL2ML's S-Match were added.

Short Whip Antenna Tuner - Here is a circuit that will resonate a short whip antenna for the HF Bands.

Single Coil Z Match - The simple Z match tuner simplified, article by Lloyd Butler VK5BR

Super Tee Antenna Tuner - W3TS small but effective antenna tuner

Switched inductor L match tuner - A 10 to 80 meters band qrp antenna tuner by KC8AON, based on Steve Weber, KD1JV "ALT or Altoids L Tuner"

T-MATCH ATU - T-Match Network Antenna Tuner for a wide range of complex antenna loads between 1.8 and 30Mhz at moderate power levels by VK6YSF

Tenna Dipper Kit - The "Tenna Dipper" is a low power antenna analyzer and ATU tuning aid. With this handy accessory, you can determine the 50 Ohm resonance frequency of antennas or you can adjust your antenna tuner for a 50 Ohm match without generating QRM

The "Woodpecker" Tuning aid - This little gadget is that it allows you to tune up at full peak output power, whilst limiting the average power to a fraction of the peak, thereby protecting the PA from meltdown

The EZ-Tuner - The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.

The L‐Network Impedance Matcher - N6LYU Greg article on L-Network

The Ultimate transmatch - Usage and benefits of transmatch. A pdf document from a QST article made available for novices and beginners by ARRL

The Z-match antenna tuner - Article about the z-match antenna tuner

Tips for Automatic Antenna Tuners - Useful tips for the use of automatic ATUs

Using Auto-Tuners - General advice regarding auto-tuners and their use by G8JNJ

W8ZR High-Power Antenna Tuner - This homebrew legal-limit antenna tuner is based on the famous "Ultimate Transmatch" introduced by the late Lew McCoy, W1ICP. The Ultimate Transmatch was described in the "Beginner and Novice" section of the July 1970 QST (Page 24).

What tuners do - How atenna tuners works and what are real effects on feed lines and maximun power output by G3TXQ

Z Match for High RF power - Based on VK5BR's Z-Match and designed for High RF Power covers 160 to 10 meters by VK6YSF

Z-Match Antenna Tuner project - This Z-Match is a link coupled all-band tuner. Two all band tank circuits cover 3-14mhz and 14-30mhz. The tank output links are selected with a very heavy duty SPDT rotary switch.