2006年11月1日 · The z-match acts as a mighty good pre-selector (a good thing, ordinarily, but not for shortwave listening). For example, if I tune the z-match for 40 meters, I can just about hear KEEL on 710 kHz, which ordinarily comes in 40 db over S9.

2020年4月18日 · Being a parallel resonant circuit, the Z-match can provide some band-pass filtering for your receiver and harmonic attenuation for your transmitter. A well-designed Z-match tuner has a high Q and is more efficient (less lossy) than other types of tuners.

A well-designed Z-match tuner has a high Q and is more efficient (less lossy) than other types of tuners. The fixed inductor simplifies construction (no taps or rollers needed). Using a toroid inductor and some small poly film variable capacitors, the Z-match can be built into a very compact package.

formed by the Z Match Tuner circuit, is that to match low resistance loads, some reactance is required to be reflected back to that network. In the Z Match circuit, this is provided from either reactance reflected from the antenna load, or by reactive characteristics of the L1/L2 coupling circuit, or by a combination of both.

In 1993, the single coil Z-Match was made popular by VK3OM and VK3AFW after their development of an earlier design of ZL3QQ. This design had the advantage of only one coupling link thus removing the necessity of bandswitching two links as …

Compact Z-Match: Intended only for coax fed antennas, this one is built in a gray-painted Bud Mini Box. The tuning controls on the top are the same as the deluxe matcher above. The switch on the end above the antenna BNC selects the hi and low Z coupling links.

A Z-match Tuner for QRP. Contribute to cebarobot/Z-match-Tuner development by creating an account on GitHub.

The QRPGuys Multi-Tuner is a Z-match design that will match a wide range of coax fed, long wire, and balanced line antennas, like high-impedance, low-loss UHF twinlead or ladder line for 40m-10m. The Multi-Z tuner is based on a design by Charlie Lofgren, W6JJZ.

2024年11月13日 · The Z-Match antenna matching unit while not exclusively designed for a balanced antenna system is particularly well suited to this configuration.

The Z-Match is built around the multiband tank circuit that came into use around 1950 to reduce bandswitching chores in the tube rigs of the period. This circuit simultaneously tunes through two frequency ranges--for example, 3.5 to 10.5 Mhz and 10 to 30 MHz--to cover the full HF spectrum.