Run only the power necessary to maintain the desired. During years the zmatch has become one of the most used atu for the qrp community. The reason was not that i have not been satisfied with the zm2, but during time i had found 2 problems which i tryed to solve. And most times that is 1 to 1 swr where other tuners only get close. It is not just another standard tuner circuit repackaged. The zm2 may just be the best atu you have ever used because of its. This is approximate for this version, but it will be able to match most antennas in this range to a i to i swr.
Housed in a rugged extruded aluminium case with a large torroid and pcb. The z match worked fine providing a match across the bands of interest, 80m to 20m. Qrp information qrp builder w5cyf w5cyf zm2 youtube 7 videos zener diodes schematic reading electronic symbols. How to operate a zm2 zmatch antenna tuner kit by emtech.
Emtech zm 2 antenna tuner kit the emtech zm 2 antenna tuner is a nifty little portable transmatch for qrp low power. Zm2 with bnc prebuilt and tested the zm2 is a state of the art antenna tuning unit. This is a kit by emtech that i built 810 years ago, and it works great. I wanted a lightweight compact qrp atu to go with my ft817 and this has. It is only active if the wings are closed and at the end of the work time or at the 1st manoeuvre after the system has been powered. The zm 2 is a state of the art antenna tuning unit. Balanced and unbalanced output from banana jacks and bnc. With the ft817 turned off, press the a, b, and c keys at the same. Zm 2 with bnc prebuilt and tested the zm 2 is a state of the art antenna tuning unit. The zm2 atu is unique in that it does not need a tapped coil to accomplish an antenna match. Series zm vacuum ejector with valve and switch note cecompliant. I tried out a few random wires and whips and they were extremely easy to tune. Excellent condition emtech zm2 atu qrp manual antenna tuner handles up to 15 watts using the unique z match circuit. I thought that it was going to be a fairly quick build but it took much longer than i thought.
Wish it was like the keyer from idiom press that you just push a. Zm 2 zm 4 zm 6 zm 1 j zm 3 j zm 5 j zm 1 k zm 3 k zm 5 k zm 1 a zm 3 a zm 5 a zm 1 b zm 3 b zm 5 b zm p q symbol specifications double check valvefor manifold with individual exhaust spacer double solenoid supply valve with release valve double solenoid supply valve without release valve x107 x111 x126 x5 series zm 3. R bernard springer authors editor evarist gin6 department of mathematics university of connecticut 196 auditorium road u9, r. During years the zmatch has become one of the most used atu for the qrp. Zm 2 with uhf so239 connectors prebuilt and tested the zm 2 is a state of the art antenna tuni zm 2 atu antenna tuning unit kit with uhf so239 connectors the. I also test it against my lnetwork tuner to compare efficiency. Option side entry sidebottom entry vacuum port location 0. To use the keyer memory you have to push 2 buttons. When it all looks good, press in place, remove the rest of the protective. The emtech zm 2 antenna tuner is a nifty little portable transmatch for qrp low power. Zm 2 z match atu antenna tuning unit the zm 2 atij is unique in that it does not need a tapped coil to accomplish an antenna match. No additional parts to buy the kit includes everything bar the tools and time. Emtech zm2 atu qrp manual antenna tuner excellent shape.
Zm2 z match atu antenna tuning unit the zm2 atij is unique in that it does not need a tapped coil to accomplish an antenna match. Run only the power necessary to maintain the desired communications. Zm 2 atu antenna tuning unit kit the zm 2 is a state of the art antenna tuning unit. Just my opinion, but everytime i see the rig those screw heads sticking out bother me. I take bigger parts, so the tune can handle 100 watts pep. I bought the emtech zm2 used about three years ago, but didnt get around to using it much. Ham radio a look at the emtech zm 2 antenna tuner youtube. However i wanted to have the option to operate with the feeders shorted together, to run the antenna as a flat top loaded against ground radials. I have experimented a bit with the this zm2 atu and im really impressed. It utilizes the wellknown zmatch circuit, which is especially useful for balanced antennas like dipoles and loops.
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