We hope that you are enjoying the Amateur Radio learning materials here on our website. Thank you for supporting our work to create materials to assist Hams in building their skills and learning new things.
Maximillian, KM6VDK – San Francisco, CA. We’d like to welcome our Internet Subscribers to the Nashua Area Radio Society: All contest contacts were made QRP (5 watts)! He worked 48 states (missing ND and WY), and 58 DXCC entities in 17 zones in just a few days of operation. The author made 977 contacts on this antenna including 808 in the CQ WPX SSB contest (794 unique stations after duplicates were removed). Pure resistive load, no reactance, resonant. The small green line along the real axis between 50 and 75 Ohms is the plot for the antenna. Thomas in March of 2010 (Figures 2 and 3). The two plots below are from the author’s installation on St. SWR and 2:1 BandwidthĪ properly tuned antenna will provide a good match across the band. The author found that even guesses (no rulers) for the element lengths were good enough for creating a good match. Make small adjustments to the reflector to tune. 
#7th call area qso party macloggerdx full
Extend each whip to full length, then retract the outer-most section 6 or 7 inches. The lengths of the elements are such that the antenna can be tuned easily. Use the second RAK knob to secure the antenna to the mast.
Locate the mast collar from the Buddipole Yagi kit and attach it to the top of the mast. Guy as necessary, or weigh down the tripod with a heavy rock or other weight. Set up the tripod and mast as you would for a standard Buddipole deployment. 
(Additional straps, or other means of routing the feed line back to the center IT adapter may be necessary).
Attach the feed line to the VersaTee with black and red wires going to the corresponding colored banana plug mounts on the VersaTee. Then attach the reflector, ensuring it is properly aligned with respect to the boom’s IT adapter, using one of the large RAK knobs. Attach the reflector to the boom by first fixing the second Yagi collar on to the other end of the boom. Locate two 9.5’ Buddipole whips and, with the whips collapsed, attach the whips to the ends of those arms. 
Attach 22” arms to each side of the VersaTee. Be sure to have the VersaTee in the same plane as the boom’s IT adapter so that the elements will be horizontal with respect to the ground when the antenna is mounted. Attach the VersaTee to the boom and mate with the Yagi collar. Attach the Yagi collar to one end of the boom. Screw this rod into the top of the VersaTee.
Construct the driven element by locating the threaded 3/8” x 24 threaded rod. Locate two 9.5’ Buddipole long whips and, with the whips collapsed, attach a whip to each side of the reflector assembly. There should be approximately 34” of arms on each side of the IT adapter. Attach an 11” arm to each side of this assembly. Screw a 22” inch arm into each side of the IT adapter. Construct the reflector by locating the second IT adapter. Add a second 22” arm to each side to produce a boom nearly 8-feet in length. 
Screw a 22” arm into each side of the IT adapter. Locate one of the IT adapters that came with the Buddipole Yagi kit. Buddipole 15m 2-el Yagi Construction Details The basic design of the antenna is illustrated in Figure 1.įigure 1. Guying system or very heavy weight on the bottom of the tripod to prevent tipping.Velcro strap (and additional strapping to secure the feed line to the boom).The other knob holds the center IT adapter to the mast.One knob holds the reflector to the end of the boom.Rotating arm kit (RAK) knobs with nylon washers.The components necessary to construct this antenna are: This note provides assembly instructions for this antenna. Thomas, USVI, during the 2010 CQ WPX Phone contest by NE1RD to generate nearly 800 QSOs using only 5 watts (QRP). The standard Buddipole Deluxe kit can be augmented to produce a very effective two-element 15 meter Yagi. There was a query after the September newsletter was published regarding the antenna pictured in my 100 Pound DXpedition article.
0 kommentar(er)
