MFJ-835 HF Ampere meter Parallel wire, max. 3A

HF Ampèremeter, Parallel wire, max. 3A
without VAT, plus shipping
In stock, shipped in 3 to 4 days.
Inserted directly into the antenna feedline, measures antenna current in three calibrated ranges.

Use the RF current meters for precise measurements of antenna currents, while tuning your amplifier or tuner, calculate the impedance of your antenna feedpoint. Highly suitable for experiments with antennas or monitor changes of the antenna during operation.

Tuning for maximum antenna current usually results in highest radiated power (power rises to the square of the current). The minimum SWR is not necessarily the point where the highest antenna current is found. Or compare the efficiency of various tuners, the MFJ HF current meters identify losses quite easily.

The MFJ HF current meters are solid constructed devices for shortwave. Frequency range 1 to 30MHz, calibrated ranges for max. 0,3, 1 or 3A. 3A correspnd to 450W on a 50Ω antenna. Ideal to check the current balance of parallel wire feeds. The large bar in the middle of the instrument clearly identifies the range of balanced current on both wires. Balanced currents lead to less radiation from the feedline, reduces distortion of the antenna pattern, less risk of TVI and BCI. The MFJ-835 allows you to analyse the problems exactly.

Binding posts for parallel wire. Large, backlit analog cross-needle instrument, size 152 x 89 x 114mm, weight 620g.

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Technical Data
Impedance (Ω) 50
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