No antenna is perfect in every respect. Losses, non-optimal space and many other circumstances prevent you from always being able to use an ideally matched antenna. Most of the time the resonance is not quite right, with the result that the standing wave ratio which the transmitter 'sees' is not very good. And so the transmitter can't transmit all its power to the antenna, it is converted into heat loss. An antenna tuner solves this problem by matching the impedance of the antenna to the impedance of the transmitter. You must compensate for capacitive or inductive mismatch, depending on how the antenna is constructed.
A distinction is made between manually and automatically tuned antenna tuners.
Manually tuned matchers are those that are equipped with variable capacitors and coils, which are then changed by hand to compensate for the reactive components of the matching. Manual tuners have the advantage to be tuned very precisely and to be designed for high power. The disadvantage is the time-consuming, manual operation.
Automatic antenna tuners tune automatically on demand, mostly with a relay network different fixed capacitors and inductors are switched through. The more such components a tuner has, the more precisely it can achieve precise matching. Most built-in antenna tuners also work according to this method. However, there is usually not much space available for large capacitors and coils. Therefore external tuners are usually superior - they have a larger impedance range in which mismatching can be compensated. Important for automatic tuners is the possibility to connect the tuner directly to the transceiver with a cable that fits exactly. This usually makes operation much easier.
Other distinguishing features of antenna tuners are weather resistance, the type of antenna connection (wire or coax), and the circuit design (L-element, Pi-element) etc. WiMo will be happy to help you find the right tuner for you!
Manual and automatic antenna tuners
Hardly any shortwave station can do without it - the antenna tuner. A device with many names: Tuner, Matchbox, Matching Network... but it does the same thing: it provides the best possible power matching between transmitter and antenna.
-
RT-100 outdoor antenna tuner, with RC-100Weatherproof automatic tuner for remote mounting
In stock, shipped in 1 to 2 days
€342.90incl. VAT, plus shipping €288.15 -
€255.00incl. VAT, plus shipping €214.29 -
MFJ-929 antenna tuner unsymm. 200WVery fast automatic tuner with 2 antenna connectors, 1.8 - 30 MHz, 6 - 1600 Ohm, 12 - 15 V
In stock, shipped in 1 to 2 days
€386.50incl. VAT, plus shipping €324.79 -
MFJ 989D Manual antenna tuner asym./sym./longwire 1.8-30 MHz, 1500WMFJ 3KW tuner with instrument and dummy.
In stock, shipped in 1 to 2 days
€720.90incl. VAT, plus shipping €605.80 -
€365.00incl. VAT, plus shipping €306.72 -
New
AlexLoop RC-2 remote tuningUpgrade for AlexLoop Hampack loop antenna, for precise tuning or fast band change
Available from 23.12.2023
€499.00incl. VAT, plus shipping €419.33 -
MFJ-939I antenna tuner asym., 200W, for IcomAutomatic tuner with energy saving function, 1.8 - 30 MHz, 6 to 1600 Ω, incl. control cable MFJ-5114I
In stock, shipped in 1 to 2 days
€257.50incl. VAT, plus shipping €216.39 -
MFJ-949E Manual antenna tuner asym./sym., 300WMFJ 300W tuner with dummy load.
In stock, shipped in 1 to 2 days
€373.90incl. VAT, plus shipping €314.20 -
MFJ-945E Manual antenna tuner symm. 300W - for mobile operation incl. 6mMFJ-945E - Mobile tuner- incl. 6 m Band.
In stock, shipped in 1 to 2 days
€245.00incl. VAT, plus shipping €205.88 -
MFJ-939Y Antenna Tuner, 200W, for YaesuTuner Yaesu, incl. MFJ-5114Y.
In stock, shipped in 1 to 2 days
€257.50incl. VAT, plus shipping €216.39
