User manual BARKER & WILLIAMSON AP-10B WINDOW PORTABLE ANTENNA

[. . . ] BARKER & WILLIAMSON 603 CIDCO ROAD COCOA, FL 32926 321-639-1510 www. bwantennas. com MODEL AP-10B ANTENNA 40 - 10 Meters Continuous Coverage 6 and 2 Meter Bands Power Rating: 300W PEP The AP-10B is a base loaded style antenna for 10 through 40 meters continuous frequency coverage (all frequencies from 7 through 30 Mhz). Operation on 2 and 6 meters is also provided without the use of loading coils. The bracket design allows simple installations for apartments, townhouses, trailers, boats, hotels, etc. [. . . ] OPERATION To properly utilize the antenna, you must perform two steps to tune it for your frequency of operation. Then, the counterpoise length is adjusted and fine tuned for good VSWR. To set the fly lead on the coil, check the table for the number of windings down from the top of the coil to clip to. Figure 2 shows how to count the windings from the top (the end the whip attaches to), and where to locate common bands. When using the clip on the fly lead, make sure that the screw is loose before pushing on or pulling off the coil wire, then tighten the screw moderately. The clip is best attached next to a plastic rib on the coil, where the wire is held up the highest from the PVC support pipe underneath. When adjusting the counterpoise length, roll up the unused portion from the free end into a coil. Start out at the suggested length in the table, and then fine tune with a VSWR meter or power meter. Best results will be obtained with the counterpoise parallel to the antenna. For rooms above the ground floor, slight improvement in operation can sometimes be noted by hanging the counterpoise outside, down the wall. For operation on a boat or mobile home where the deck or floor is metal, the counterpoise may have to be stretched two or three feet above that surface. When you achieve a good SWR, mark the counterpoise and coil for a favorite band with a magic marker. If you cannot adjust the SWR low enough with the counterpoise, but have seen a definite dip, you need to readjust the flylead. Note that the higher the frequency you are working with, the more sensitive the adjustments become. On 2 and 6 meters, the coil is bypassed with the fly lead , and the counterpoise is not used. Antenna whip length may be adjusted as necessary. COIL / COUNTERPOISE TABLE Frequency 40 meters 30 meters 20 meters 17 meters 15 meters 12 meters 10 meters 6 meters 2 meters Fly Lead Coil Adjustment Use all of coil, detach the fly lead Attach fly lead 25. 5 turns down from top (point E in Fig 2) Attach fly lead 14. 5 turns down from top (point D in Fig 2) Attach fly lead 10 turns down from top Attach fly lead 6. 75 turns down from top (point C in Fig 2) Attach fly lead 5 turns down from top Attach fly lead 4 turns down from top (point B in Fig 2) Bypass all of coil with fly lead (point A in Fig 2) Bypass all of coil with fly lead (point A in Fig 2) Counterpoise 35 - 40 Ft 17 Ft 12. 5 Ft 9 Ft 7 Ft 5. 5 Ft 4. 5 Ft No counterpoise. [. . . ] Warranty is voided if product is subject to misuse, neglect, accident, improperly installed or used in violation of the instructions furnished by us. We reserve the right to make changes in design at any time without obligation to update previously manufactured models. This warranty is given in lieu of any other warranty, expressed or implied. [. . . ]