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Electronics-World-1959-05

Built -in cooling fan t

Built -in cooling fan t ,,r,.:ais Rotating Slide Rule Dial Compact, Stable, VFO Provision for SSB Adapter $50.00 required on C.O.D. orders. Shipped motor freight unless otherwise specified. HEATH COMPANY Benton Harbor 15, Michigan t alsYbsicïary of Deystrom, Inc j 4 "APACHE" HAM TRANSMITTER KIT This beautifully styled transmitter has just about everything you could ask for in transmitting facilities. The "Apache" is a high quality transmitter operating with a 150 watt phone input and 180 watt CW input. In addition to CW and phone operation, built -in switch selected circuitry provides for single -sideband transmission through the use of a plug -in external adapter. A completely redesigned, compact and stable VFO provides low drift frequency control necessary for SSB transmission. A slide rule type illuminated rotating VFO dial with full gear drive vernier tuning provides ample bandspread and precise frequency settings. The bandswitch allows quick selection of the amateur bands on 80, 40, 20, 15 and 10 meters (Il m with crystal control). This unit also has adjustable low -level speech clipping and a low distortion modulator stage employing two of the new 6CA7 /EL34 tubes in push -pull class AB operation. Time sequence keying is provided for "chirpless" break -in CW operation. The final amplifier is completely shielded for greater TVI protection and transmitter stability. A formed one -piece cabinet with convenient access hatch provides accessibility to tubes and crystal socket. Die -cast aluminum knobs and front panel escutcheons add to the attractive styling of the transmitter. Pi network output coupling matches antenna impedances between 50 and 72 ohms. A "spotting" push button is provided to allow tuning of the transmitter before switching on the final amplifier. This feature also enables the operator to "zero- beat" an incoming frequency without placing the transmitter on the air. Equip your ham shack now for top transmitting enjoyment with this outstanding unit. Shpg. Wt. 110 lbs. - a . Iris - HEATHKIT MODEL SB-10 SINGLE SIDEBAND ADAPTER KIT Designed as a compatible plug -in adapter for the model TX -1 it can also be used with transmitters similar to the DX -100 or DX -100 -B by making a few simple circuit modifications and still retain the normal AM and CW functions. Easy to operate and tune, the adapter employs the phasing method for generating a single sideband signal, allowing operation entirely on fundamental frequencies. The critical audio phase shift network is supplied, completely pre - assembled and wired in a scaled plug -in unit. Features include single -knob band - switching for operation on 80, 40, 20, 15 and 10 meters, an easy -to -read panel meter, built -in electronic voice control with anti -trip circuit. Enjoy the advantages of SSB operation by adding this tine kit to your ham shack now. Shpg. Wt. 14 lbs. MODEL DX -100 -B $18960 00.00 deposit required on C.O.D. orders. Shipped motor freight unless otherwise specified. DX -100.8 PHONE & CW TRANSMITTER KIT The same fine performance of the time proven DX -100 is retained in the DX -100-B with improvements in the crystal and loading circuits. The onepiece formed cabinet has convenient access hatch for changing crystals, etc. and the chassis is punched to accept sideband adapter modifications. Features a built -in VFO, modulator and power supply, complete shielding to minimize TVI, and a pi network output coupling to match impedances from 50 to 72 ohms. RF output is in excess of 100 watts on phone and 120 watts on CW. Covers 160 through 10 meters. Single -knob bandswitching and illuminated VFO dial and meter face. RF output stage uses a pair of 6146 tubes in parallel, modulated by a pair of 1625's. Designed for easy assembly. Measures I ,Ns' 4. x l9yz' W. x 16' D. Shpg. Wt. 107 lbs. 78 MODEL DX -40 $6495 DX -40 PHONE & CW TRANSMITTER KIT Operates on 80, 40, 20, 1 5 , I I and 10 meters, using a single 6146 tube in the final for 75 watt plate power input CW, or 60 watts phone. Single -knob band - switching, pi network output, complete shielding, provision for three crystals and VFO. D'Arsonval movement panel meter. Shpg. Wt. 25 lbs. MODEL DX -20 $3595 DX-20 CW TRANSMITTER KIT This fine unit covers 80, 40, 20, 15, 11 and 10 meters with single - knob bandswitching. Features a 6DQ6A tube in the final for 50 watt plate power input, pi network output, complete shielding to minimize TVI. Easy to build with complete instructions supplied. Shpg. Wt. 19 lbs. ELECTRONICS WORLD

"MOHAWK" HAM RECEIVER KIT Designed for ham band operation and for maximum stability and accuracy, the Heathkit "Mohawk" receiver will let you enjoy ham activities to the utmost. This 15 -tube receiver features double conversion with IF's at 1682 kc and 50 kc and covers all the amateur frequencies from 160 through 10 meters on seven bands. An extra band is calibrated to cover 6 and 2 meters using a converter. The "Mohawk" is specially designed for single -sideband reception with crystal controlled oscillators for upper and lower sideband selection. A completely pre - assembled, wired and aligned front end coil /bandswitch assembly assures ease of construction and top performance. Many more important features are provided in this outstanding receiver for dependable and effective amateur communications. Ruggedly constructed with well rated components throughout. Shpg. Wt. 66 lbs. Matching accessory speaker kit; optional extra. Model AK -5. $9.95. Shpg. Wt. 8 lbs. Prewired and Aligned Coil /Bandswitch Assembly Crystal Controlled Oscillators for Deft -Free Reception HEATHKIT MODEL AR -3 SZqs (LESS CABINET) i do 40 "c ALL -BAND RECEIVER KIT A fine receiver for the beginning ham or short wave listener. Frequency coverage is from 550 kc to 30 me in four bands. Features include bandswitch, bandspread tuning, phone- standby -CW switch, antenna trimmer, noise limiter, RF and AF gain controls and headphone jack. Easy to build. Shpg. Wt. 12 lbs. MODEL QF -1 $995 "SENECA" VHF TRANSMITTER Brand new in every respect, the model VHF -1 "Seneca" is the latest addition to our line of ham transmitters. This self -contained 6 and 2 meter transmitter features built -in VFO, modulator, and dual power supply. A pair of 6146 tubes are employed in the push -pull final amplifier stage and features up to 120 watts input on phone and 140 watts input on CW in the 6 meter band. Slightly less in the 2 meter band to prolong amplifier tube life. Panel controls allow VFO or crystal control, phone or CW operation on both amateur bands. Four switch - selected crystal positions. Complete RF shielding to minimize TVI. Spotting push- button provided. The VFO slide rule type dial features edge- lighting and vernier tuning. An ideal transmitter for the ham who wants to extend operation into the VHF region. Shpg. Wt. 56 lbs. KIT "Q" MULTIPLIER KIT Use with any receiver with IF frequency between 450 and 460 kc to add additional selectivity for separating two signals or to reject one signal and eliminate heterodyne. A great help on crowded phone and CW bands. Not for use with AC -DC type receivers. Simple to connect with cable and plugs supplied. Shpg. Wt. 3 lbs. MODEL CA -1 s1395 "AUTOMATIC" CONELRAD ALARM KIT This easy -to -build device gives instant warning and cuts AC power to your transmitter when a monitored station goes "off-the-air". Use with any radio receiver having an AVC circuit. A sensitivity control adjusts to various AVC levels. Incorporates a heavy duty six -ampere relay and manual "reset" button to reactivate the transmitter. Complete instructions provided for connection to receiver. Shpg. Wt. 4 lbs. MODEL AM -2 51595 MODEL VX -1 $2395 MODEL VF -1 $1 950 REFLECTED POWER METER KIT ELECTRONIC VOICE VARIABLE FREQUENCY Check the match of your an- BALUN COIL KIT CONTROL KIT OSCILLATOR KIT tenna transmission system by Unbalanced coax lines can be This unique device lets you Far below the cost of measuring crystals to the obforward and re- matched to balance lines of switch from receiver to trans- tain the same frequency flected power coverage or standing wave either 75 or 300 ohms by using mitter merely by talking into this VFO covers 160, 80, 40, ratio 20, 15, from 1:1 to 6:1. Handles this balun coil kit. Use without your microphone. Provision is I I and IO meters with a peak three basic power of well over 1 kilo- adjustment from 80 through 10 made for receiver and speaker oscillator frequencies. watt Better than and may be left in antenna meters at power up to 200 watts. connections and also for a 117 10 volts RF output on fundamenfeed line. No external power re- May be located any distance volt antenna relay. Adjustable tals. Requires quired. only 250 volts 1,60 through DC at 6 meters. from transmitter or antenna. to all conditions by sensitivity Is For to 20 ma, and 6.3 VAC at 0.45 a. 50 or 75 ohm lines. Shpg. Protective cover included. Shpg. and variable time delay controls Illuminated Wt. dial reads direct. 3 lbs. Shpg. Wt. 4 lbs. provided. Shpg. Wt. 5 lbs. Wt. 7 lbs. May, 1959 79

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