Elecraft T1 Miniature ATU for all Low-Power Transceivers product reviews by real people like you. Only at – is a Web site dedicated to ham. Elecraft Automatic Tuner, max 20W, ready built. Symmetrical Antennas with optional BalUn, Longwire with BNC/Banana Plug Adapter. Elecraft Automatic Tuner, max 20W, kit. Symmetrical Antennas with optional BalUn, Longwire with BNC/Banana Plug Adapter.

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Even the less frequently needed functions like detailed tuner info and battery voltage are described.

The second button is used in combination with the eleccraft to switch the tuner in-line wlecraft to bypass it, or if you press, hold, and release, it will give you detailed power and SWR information by blinking the yellow LED in slow Morse. Yes, tuning with 9v would be better than 12v. Looking forward to meeting you folks on the hills and on air!

This tuner is very fine. The 3B was first offered as a self build kit, again with a case by TenTec, but this time all aluminium. The green light would flash and I would hear the chirp that the tuner made while tuning. I made the cable from a good quality shielded twin core microphone cable. It is much more interesting to try with some realistic portable antennas:. I think the circuitry ramps down the power too low? You need a fine-tipped soldering iron, a steady hand, and good soldering technique to be successful.


Reading the power and swr using the three leds may seem a little funny at first sight. In this way, SSB voice as well as any other modulation method can be used for tuning, with little loss of accuracy compared to the use of a constant carrier.

Elecarft is very important to mount the parts in the same order as specified in the assembly guide, otherwise you may find yourself having elecratf hard time.

When that is done, the green LED begins to blink for 3 seconds and, if one begins to transmit during this time, the T1 will start to re-tune. A modulated SSB transmission can be used for tuning, with almost as good accuracy as a constant carrier.

Elecraft T1 Automatic Antenna Tuner – OZ9AEC Website

Embedded software engineer in the satcom industry during the day. I recall reading somewhere that Elecraft does not whish to provide elefraft for any non-QRP transceiver. The T1 has 7 elceraft and 7 capacitors to provide a wide tuning range. But at a third of the price of the ready-built ATU it’s a luxury some FT owners may decide to forego. Combining 7 inductors with 7 capacitors in 2 network types, the T1 has a total of possiblities to try.

I built this as a daughter board that the Arduino Nano can plug into.

When the band changes, it turns on the T1 and sends it band information, allowing the antenna to be automatically tuned to the new band. There are several options, depending on whether you tap or hold the buttons, but don’t worry if you have a memory like a sieve like me: It’s small, light and I haven’t come across anything that it elecfaft match.


Automatiktuner Elecraft T1 kit version

I got tired of messing with the little, manual, kit tuners for my EF wire antennas, so I sprung for this T1 in pre-built version. Circuit Description The T1 has seven fixed inductors and seven capacitors, which are switched in and out of circuit using relays 1t tune the matching L network. The adapter is a great boon, allowing you to switch from eledraft to band without tempting you to send a burst of spectrum-polluting RF to re-tune the antenna.

On masts with a very smooth surface, it may be better to use rubber band without a textile coating so that the tuner does not slide down.

All relevant docs including the schematics are publicly available on the Elecraft web site. So it has been very good practice to begin with just 3 close turns for L1, then continue with 5 evenly spaced turns round the core, then 7, 11, 16, 20 and finally After that, the band settings can be recalled from memory.

A schematic for the interface is shown below. I stayed away from my radio activities for 2 years. The details are described in the T1 manual on page 8.