. QST . reel and rod as a means ofpajnng out the guide line. Four-pound nylontest line and a short rod is the best combinationto use. Tie the line to the arrow just to the rear ofthe feathers. As the arrow passes over the topof the tree or other tjpe of support, have theperson holding the rod apply enough pressure tothe reel to control the flight of the arrow. \Mienthe arrow has landed, untie the nylon line andfasten the halyard in place. Now haul the hal-yard back to the firing position so that thehalyard and antenna can be connected together.— E. M. Fry, K2CW IMPROVED CABLING FORREMOTE-
. QST . reel and rod as a means ofpajnng out the guide line. Four-pound nylontest line and a short rod is the best combinationto use. Tie the line to the arrow just to the rear ofthe feathers. As the arrow passes over the topof the tree or other tjpe of support, have theperson holding the rod apply enough pressure tothe reel to control the flight of the arrow. \Mienthe arrow has landed, untie the nylon line andfasten the halyard in place. Now haul the hal-yard back to the firing position so that thehalyard and antenna can be connected together.— E. M. Fry, K2CW IMPROVED CABLING FORREMOTE-TUNED VFOs AFTER constructing and using several remote-1- tuned variable-frequency oscillators, it be-came apparent that one of the weakest points inthis system is the cabling between the frequency-control box and the rest of the oscillator. Instabil- Amp. Fig. 3 — The simple gridmodulator circuit used byW8MMK. L2 and La areeach 10 turns of No. 26enamel wire wound over R12and i?i3, the popular 4-250A amplifier described in recenteditions of the Handbook. Many of the components shown in Fig. 3bear designations — R^, Ce, Li, etc. — whichrefer to the original diagram inasmuch as theseparts remain unchanged in both value andplacement. With respect to the original circuit,it should be mentioned that the 6SL7 section ofthe unit requires no modification. L2 and L3 and ity or intermittent operation of a VFO can fre-quently be traced to poor contacts in the plugsand receptacles used to terminate the intercon-necting coax Une. I have found that Amphenoltype 83-22SP and 83-22R plugs and receptacles,respectively, used in conjunction with. RG-22/Ucoaxial cable, provide the most reliable tank-to-tubc connections vet emplo5ed. — Donald Miller, W4VZQ July 1955 57 NEW BOOKS License Manual for Radio Operators, by Johnson. PubHshed by Rinehart &Company, Inc., New York. 480 pages, includingindex, 6M X 9J^, cloth cover. Price, $ A question-and-answer man
Size: 2003px × 1247px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
