![]() The mAT-30 connects to either the CAT/LINEAR or LIN/TUN port on the back of the radio, dependent upon the radio model, and is operated by the front panel of the radio through the included interface cable. Soon I will be adding a section on the website specifically for the AT-AUTO II.The mAT-30 automatic antenna tuner is engineered to integrate with Yaesu transceivers. The "ballpark" price of the AT-AUTO II is $3,200 - $3,600. The 8 coaxial outputs can be used any combination, such as feeding multiple elements simultaneously (think antenna array). The fiber-optic cable is able to work over several km. The tuning unit may be located practically any distance away, the only limitation being the RF feedline between the tuning unit and the radio transceiver. The "tuning unit" has 8 coaxial outputs and is designed to be remotely located, and communicates via fiber-optic cable with a "control head" located in the hamshack. The AT-AUTO II uses the variable inductor (discussed above) in a "T" configuration comprised of two 15-750pF, 10kV vacuum capacitors. Without an approximate Bill of Materials, I can't definitively determine overall price. This has delayed both the sourcing of the inductor sub-components and subsequently the Bill of Materials. I have found several production facilities but their pricing has not been acceptable. manufacturer to produce some of the variable inductor's sub-components. However, its production delay is due to problems finding a U.S. In order to avoid these problems the AT-AUTO II uses a sophisticated variable inductor (NOT a roller inductor), which while electrically superior, is more mechanically complex than a roller inductor. The delays center around the variable inductor.Ī major problem associated with high-power tuners that utilize "roller" inductors is their reduced Q, significant inductor power dissipation, and the roller inductor's in-band resonances. The electronic and mechanical design work was completed months ago and component sourcing for the meters, motors, and the vacuum capacitors, etc., had been completed in August, 2011. I'll explain the on-going circumstances and let you make your own conclusions. I don't want to keep stringing folks along. I had in good-faith believed that it would have been ready long before now and had given estimated dates that I was subsequently unable to live up to. Wipe off any excess lubricant, being extremely careful NOT to get any of this mixture onto the coil.įirst - Thank-You for being patient. Turn on the AT-AUTO, enter Manual Mode, and motor the inductor back and forth from one end of travel to the other. A little bit of this lubricant goes a long way. The apply small amounts of the lubricant ONLY to the wheel shaft. Remove the existing lubricant from the wheel shaft by wiping it with a paper towel. Look at the roller inductor and you will see the wheel shaft - it is parallel with the axis of the roller inductor. Take a small portion of the white lithium grease (about the size of tip of your index finger) and start mixing in graphite powder until the mixture is dark black, and is the consistency of thick yogurt. Visit your friendly neighborhood hardware store and purchase a very small tube of white lithium grease and some graphite powder. The contact surface between the contact wheel and the contact wheel shaft is where the sound is emanating from. The roller inductor has a contact wheel which rides back and forth along the length of the roller inductor.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |