Dentron AT- 3. K Tuner. The. Dentron AT- 3. K Antenna Tuner and How to Find Some Usable Documentation Key search words: Dentron.
AT- 3. K, AT- 1. K, built like a battleship, AT- 3. K Operation Manual, AT- 3. K schematic. I'm guessing that anyone who found this article by searching the Internet did so because. Dentron AT- 3. K antenna tuner and failed to find. This was the position I was in recently when I'd bought a "does not. Dentron AT- 3. K on ebay and was trying to find some information, or at. I found several entries where people were also looking.
I was but nobody seemed to be able to locate any. I had one of the. I set out to "reverse engineer" the one I had, at least to draw. As with several of my website entries, if I have trouble finding. I figure there's probably several other folks out there in the same boat so I. I'll know where to. The AT- 3. K is the budget version of the MT- 3.
Dentron Monitor Tuner (160-10 AT 3KW) product reviews by real people like you. Only at eHam.net. - eHam.net is a Web site dedicated to ham radio (amateur radio). Description: Full legal limit tuner rated at 3kw for 10 thru 160 meters. Coax, balanced line, and single wire antenna hookups. A large 4/1 balun inside. Built in power meter with 0-200 forward, 0-200 reflected. K5LAD's Assorted Ham Stuff. The Dentron MT-3000A Antenna Tuner and How to Find Some Good and Readable Documentation Key search words: Dentron, MT-3K, MT-3000A, built like a battleship, W-2 Wattmeter, MT-3000A Operation Manual. This is the manual page for Dentron. Here you will find instruction manuals, service manuals, user guides schematic, brochures etc.
A tuner with. information available also on this website. Whereas the MT- 3. A has a built in low- power.
AT- 3. K has. a switch position for an external dummy load and dual meters that only to read relative. SWR readings from a simple bridge circuit, i. The variable capacitors, the tapped inductors, and the inductance selector switch. The MT- 3. 00. 0A has a built in 4: 1 high- power. AT- 3. K only has a switch.
BAL) to feed to an external balun. Both units are heavily built with heavy chassis and cabinets. The MT- 3. 00. 0A is built like a. AT- 3. K is built more like a small destroyer. This is still better than.
PT boat. The case size of the AT- 3. K is a bit smaller than the. MT- 3. 00. 0A's case.
The schematic and instruction book for the MT- 3. A can be found in numerous sites on the. Internet although the printing is usually quite light and difficult to read. That's why I. re- did the MT- 3. A. schematic to make it plenty dark and easily readable and it is available also on this. The information, instruction booklet and schematic for the AT- 3. K, however, seems to have.
EHam.net Classifieds Detail [Classifieds Home] Date Posted by Category User IP; 2016-01-24 (UTC) K5MBX. Tuners. 50-26-176-176.abilcmtk01.res.dyn.suddenlink.net: FS Dentron AT-3K Antenna Tuner FS Dentron AT-3K Antenna Tuner. This tuner is the conventional T-shaped transmatch tuner made popular by Lew McCoy (W1ICP. The tuner tunes from 160-10 Meters.It has. These are fairly rare tuners and it is hard to find a manual. I can provide a link to a website that has lots of information on the.
Mission Impossible TV show. Even the. sites that sold copies of instruction booklets didn't seem to have any. Dentron also made an AT- 1. K tuner which was, no doubt, a budget version of one of their. The information sheets on this tuner are also. Internet. The AT- 1.
Dentron AT-3K Tuner. Discussion in 'Ham Radio Gear For Sale' started by N4ZYV, Feb 4. N4ZYV Ham Member QRZ Page. A nice Dentron antenna tuner. No evidence of any arcing or repairs. Looks brand new inside. 18 position tapped inductor, 7 position antenna switch built-in. RF and. ground lug. No manual. Outer case shows some wear, front panel has the call sign of a PO and a small directory of inductor settings for his antennas. I didn't care about removing them. Overall, a very good tuner. Dentron antenna tuner at 3k operating manual (1112) Did you mean: destroy antenna tuner at 3k operating manual? Price: All; $2~$117; $117~$233; $233~$349; $349~$465; $465~$581 - Grid Grid. Orders. Price. Discount. Show: Page: 1/19 Next. NRF24L01 + PA + LNA Wireless Module w/ Antenna - Black (3.0~3.6V).3V); Maximum power: 20dBm; Transmit mode operating current (peak): 115mA; Operating current.
K had smaller. components and a single meter for SWR readings. I suspect that the information to follow. AT- 3. K will be fairly similar to and go a long way toward assisting someone. AT- 1. K. Click on the schematic.
You can also click this line to download a file with the schematic. NOTE: Thanks. to sharp- eyed reader Jim Hargrave - W5. IFV, there was a small error in the input switch. This revised schematic shows the wire removed between connections for positions 2. Revision 1. If you happened to get it when it. Thanks Jim! The Dentron AT- 3.
K is the conventional T- shaped Transmatch tuner made popular by Lew Mc. Coy. - W1. ICP (SK). Basically, the power comes into the unit via the antenna Input port. SWR Bridge sensor, to the input switch.
This switch allows the input power to. Coax #1 (bypassing the tuner circuit),or (3) to the Transmitter Matching variable capacitor. Once through the second variable capacitor, the path is back through another area of the. Coax #1, #2, #3, the insulator. This circuit is shaped like a capital T with the two top.
Obviously, for this to work. RF burns while tuning. The picture to the left shows the white insulated piece connecting the. When I get a new tuner I find that they almost always have. I like so I generally loosen the knob mounting screws. Typically I find knobs at the 0. I prefer it just the opposite.
It. makes more sense to me for the knob to indicate zero at minimum capacity and 1. The reason I do this is because often, with this type of tuner, I can. SWR. Typically, however. SWR, the tuning which uses more capacity and. With my knobs placed pointing to the highest number for the highest.
I can remember which tuning to use, i. When I received my AT- 3. K tuner, the SWR bridge. Even when I connected the tuner to a load with an. SWR, the lower meter (SWR) did not read anything.
I checked the meter itself and. Since it was difficult to remove the cover protecting the SWR bridge circuit I had planned. To. remove it required unsoldering a bunch of stuff to get to it but with the SWR part of the. I had to unsolder and remove it anyway. At least it allowed me to. I assumed that the problem was. I got the PC board out and.
Ultimated the steps which led to the fix. SWR bridge board, even though they all.
I guess the lesson to be learned was, when in doubt...... These. pictures show the SWR bridge PC board removed from the chassis and cover. This will. RF choke which was not identified with a value. The circuit used was a simple RF pickup. This type of pickup is somewhat. On the higher frequencies, only a few watts can pin the meter.
Also, the alert reader might notice that. It had actually broken free while I was removing the board and it was easer. The center lead was resoldered in. On the AT- 3. K schematic, I've identified all the values that I could. A few were not.
I had to leave them without a known value. The RF choke. on the SWR bridge had no markings and I was unable to find a similar circuit for any other. Dentron product so that one is a guess.
The dual potentiometer on the front panel was not. I was unable to get a good reading on it. Usually pots in a similar circuit are. K each but I kept coming up with a much lower value, something like 3. K. for both. The primary thing is, if you're replacing this dual pot is, both pots should be. If I had a choice between the Dentron AT- 3.
K and the Dentron MT- 3. A, and prices were. I'd always go for the MT- 3. A. If, however, I was trying to find a.
AT- 3. K would be very much in the. And if you can find a tuner but cannot locate the documentation and/or schematic. I hope this has been helpful to you. Enjoy! Click on any of the pictures below for a larger.
Antenna Selector switch. Rear cabinet view. Inductance Selector switch. Tuner Inductance Parts. Interior view from the front. Rear view of tuner interior NOTE: SWR bridge PC board and cover has been. Interior view of meters.
Interior showing SWR bridge in place. Smaller inductor. Insulator for single wire antenna. Note: Orange inspection sticker... I wonder where. Annette is now? If you're also needing the actual operating instructions.
AT- 3. K tuner, you should be able to download the instructions for other Dentron. AT- 3. K. This website has a copy of the original MT- 3. A manual in the. Downloads section. Created August 2. Email to: k. 5lad@arrl.
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