80m and 40m Dual-band Vertical Antenna CP8040 Operation Instructions ・Description ①The CP8040 is a dual-band vertical antenna for HF low band. ②Compact, light weighted and very easy to assemble. ③It is completely self-supported and does not need any guy wires. ・Parts Description ④Trap radials could be concentrated on one direction instead of spreading them around the Pipe No. 1 φ7.4 M45001 antenna. This is especially convenient if the antenna is Tapping screw M4x8 installed on balcony railing or M45021 window side of condominiums and Inner tooth washer M4 M45022 urban apartments. Pipe No. 2 φ10 M45002 ⑤Since the antenna is direct DC Tapping screw M4x8 ground at the feed point, coaxial M45021 cable and transceiver are being Inner tooth washer M4 protected from the high voltage Hat M45022 M45008 Hat S caused by lighting. Hat SS Hat ring M45009 ⑥Center frequencies of the antenna M45010 M45011 are adjustable in each band S trap simply by change radial length M45006 and capacity hat (80m only). Tapping screw M4x8 Screw with radial M45021 ⑦Top loading structure utilizing element fastener ring capacitive hat enables the Inner tooth washer M4 Nut with radial M45022 antenna to complete with full element fastener ring Tension ring quarter wave length antennas in M45018 its performance. It is rigid and rugged enough to ⑧ Loading Coil for 7MHz withstand the wind pressure over M45007 35m/sec. Mast brackets area adjustable to ⑨ Tapping screw M4x8 accept 1 1/5” to 2 1/3” diameter M45021 mast. Inner tooth washer M4 ⑩Since feeding point is covered by M45022 the support pipe, it is excellent in Pipe No. 3 φ30 the waterproof property. M45003 ⑪CP8040 can be used 3.5-3.8MHz / Tapping screw M4x8 7-7.2MHz. M45021 Inner tooth washer M4 ・Parts Description M45022 Parts # Description Qty Pipe No. 4 φ30 M45001 Pipe No. 1 φ7.4 1 M45004 M45002 Pipe No. 2 φ10 1 M45003 Pipe No. 3 30 1 Tapping screw M4x8 φ M45021 M45004 Pipe No. 4 φ30 1 Inner tooth washer M4 M45005 Pipe No. 5φ30 1 M45022 M45006 S trap 1 Pipe No. 5 φ30 M45005 M45007 Loading coil for 7MHz 1 Feeding point assembly Hex head screw M6x8 M45012 M45008 Hat 2 M45023 M45009 Hat S 4 Spring washer M6 Radial element M45024 M45010 Hat SS 4 M45017 Radial ring M45013 M45011 Hat ring 1 Screw with radial element holder M45012 Feeding point assembly 1 M45013 Radial ring 1 Radial nut Radial coil for 3.5MHz Radial coil for 7MHz M45014 Support pipe 1 M45025 M45015 M45015 Radial coil for 3.5MHz 1 M45016 M45016 Radial coil for 7MHz 1 Hex head screw M6x8 M45017 Radial element 2 M45023 Support pipe Spring washer M6 M45018 Tension ring 2 M45014 M45024 M45019 Mast bracket 2 M45020 V-volt set 2 M45021 Tapping screw M4x8 12 M45022 Inner tooth washer M4 12 V-volt set M45023 Hex head screw M6x8 3 Mast bracket M45019 M45020 M45024 Spring washer M6 3 M45025 Radial nut 2 （Fig-１） -Note---------------------------------- <<Rumbling Thunder>> <<Note>> <<Installing the antenna>> ①The thunder seems to rumble in ・Fastening the radial element trap ①Don’t install on a rainy or windy the vicinity, don’t touch the coil assembly tightly may be day since it is dangerous. antenna and coaxial.When you damaged. ②Don’t attempt to install the don’t use the radio, take off the ・Install radial as much as far from antenna only by yourself. Installing cable from the radio. building. the antenna alone on the roof may ・In case of using the metallic stay lead you dangerous accident. <<If there is something wrong, wire, set the wire on the lower Always ask your friends for help stop transmitting immediately>> mast bracket set and attach the insulators at within 1m from the installing the antenna. ①Keeping transmitting with high ③Don’t drop the antenna, tools and VSWR may cause the radio to be mast bracket set in order to attachment when installing the damaged. insulate. It is possible to remove the radials antenna in the height. Install the Stop transmitting immediately and ・ antenna before assembling it on check the following matters. If it you don’t use the band for. the ground. doesn’t solve the problem, please <<Antenna location>> ask the dealer or Diamond ①If the CP8040 is located on the Antenna Corporation. roof of a house or top of a [Condition: If the antenna doesn’t building, look around the roof to ・180 degrees radial see if there are any obstacles seem to receive well or propagate such as an electronic wire or TV well] antenna. The CP8040 has to be 3.5MHz 7MHz located as far away as possible Check 1: Is the antenna too close to from those things to obtain its the building wall? If the maximum performance. Installing obstaclesare too close to （Fig－3） the antenna too close to the antenna, VSWR is higher building wall may cause bad effect and the radiation pattern is for electrical characteristics of the disturbed. Please install the antenna. antenna from the building ・ ②Don’t install the antenna where is as far away aspossible. 90 degrees radial easily reachable by people. Check 2: Did you assemble the (one directional style) ③Install the antenna firmly not to fall antenna correctly? Please down due to the strong wind. Even read theinstruction again if falling down the antenna, locate and reconfirm the assembly. the antenna at the safe place Check 3: Is the coaxial cable where people and building are not something wrong? Please inflicted injures. check if soldering the connector is okay and the <<Before transmitting>> wire breaks by the volt-ohm 3.5MHz ①Transmit after confirming if the meter. antenna works normally by an 7MHz Fig 4 SWR meter. If VSWR is less than ・Antenna location （ － ） 1.5, it is no problem. If VSWR is Resonate frequency of HF antenna higher, stop transmitting and can change based on location. ・Assembly Instruction check if the parts of the antenna Antenna should be mounted away ①Put radial element in each radial and coaxial cable are connected. from tree, building and other antennas. element trap coil assembly by If there are tall buildings or referring to the typical element obstacles or the distance between ①If the CP8040 is located on the length listed in Table A/B and the antenna and the ground is roof of a house or top of a fasten it with element fastener short, VSWR may not be lowered. building, look around the roof to ring. (Figure-5) see if there are any obstacles ②Set grip nut rightly to treaded part ※Diamond Antenna SWR/POWER such as TV antenna or water of each radial element trap coil meter is an insertion type being reservation tank. The CP8040 has assembly. connected between a transmitter to be located as far away as and an antenna. Transmitting possible from those things to Radial element trap coil power and SWR can be measured obtain its maximum performance. Radial element fastener ring with very simple operations. In ②If the CP8040 is installed on a addition with those conventional balcony railing, installing the measurements, PEP (peak antenna too close to the building Grip nut envelope power) on SSB mode wall may cause bad effect for Adjust length of radial element can be measured with a PEP electrical characteristics of the monitor function. With our antenna. Locate at least 2m to 5m （Fig－5） Diamondís wideband and low (7’ to 16’) away from the building insertion loss directional coupler wall depending on structure of the those measurements can be building. ③Connect vertical element parts performed withminimum effect in (Pipe No. 1, No. 2, S trap, Loading transmission line. coil for MHz, Pipe No. 3, No.4, No. <<During transmitting>> 5) and fasten them with tapping screws and inner tooth washers Touching the antenna during ① by aligning holes in each joint transmission may cause to section. electrify. Pay attention not to touch （Fig－２） Attach two Hat and two Hat S the antenna especially for children ④ alternately on Hat ring. if installing on a balcony railing. ⑤Attach mast support pipe to mast <<Note>> If the radial element of a band is with mast brackets. Mast support To avoid breaking each radial made longer, resonant frequency pipe’s tapping hole has to be element trap coil assembly, turn it of the band is made lower propor- placed above the brackets and it into a holder lightly till it stops and tionally. has to be pointed outside against turn backward to align water drain Though typical adjustment length the mast. Upper end of mast hole downward and secure with a of each radial element is set at support pipe has to be placed screw. center frequency of each band, it more than 12cm(4.7’) above the varies more or less depending on ・ top end of the mast. Adjustment the place the antenna is installed. Coaxial cable <<Note for frequency adjustment>> Adjustment example: Practice the following adjustment If center frequency of 40m band is procedure at the place where set at 7.050MHz and real center Applox. 12cm(4.7") theantenna is actually installed.Test frequency when the antenna is Trapping hole transmission for the adjustment has installed is at 7.010MHz, then this side to be performed for as short time as frequency difference between is possible and with as low RF power 7.050MHz (desired center frequency) - Mast Support pipe as possible. Maximum RF power 7.010MHz (real center frequency) = rating of continuous wave (CW) is 40KHz. about 1/3 of it in SSB mode.If the From Table A, adjustment length at antenna is installed on a long 40m band is about 10mm per Mast brackets balcony railing, the railing itself may 10KHz,therefore: work as a radial element and VSWR Spring washer 10mm x 40KHz / 10KHz = 40mm of the antenna may not be changed Since real center frequency is lower Nut with the adjustment of attached than desired center frequency, radial radial element length.