. QST . st. By the way, EAS just received an EANcertificate. K2HXP is on 50 Mc. He needs a copy of QST. Can anyone help? K2IKS is planning to operateportable in VE2- and VE3-Land this fall. BRC is rebuildingfor the fall season but got in the July CD Party just thesame. CVW now is settled in a new QTH. He has no an-tennas up as yet but ran up 23,760 points in the CD Partywith a wire strung in the attic. GVZ has been hit by thesummer lull but promises to be back full strength come thefall season. EWZ has a new 33-ft. vertical. A ngw club inthe section is the St. Peters Prep. Radio Club,
. QST . st. By the way, EAS just received an EANcertificate. K2HXP is on 50 Mc. He needs a copy of QST. Can anyone help? K2IKS is planning to operateportable in VE2- and VE3-Land this fall. BRC is rebuildingfor the fall season but got in the July CD Party just thesame. CVW now is settled in a new QTH. He has no an-tennas up as yet but ran up 23,760 points in the CD Partywith a wire strung in the attic. GVZ has been hit by thesummer lull but promises to be back full strength come thefall season. EWZ has a new 33-ft. vertical. A ngw club inthe section is the St. Peters Prep. Radio Club, with head-iiuarters at 144 Grand Street, Jersey City. The Club in November of 54 with no one having any type ofradio license. Presently there are 3 General Class and 8Novice licensees as a direct result of the club activities.(Continued on page 92) 90 MALLORY HAM BULLETIN Switch Common Power to several RF Transmitters with Mallory Hamband Switches 0 -a- ■ ■>* i(&- -1^.-i«- » 10-. Mallorv #1600 Series Rotary Switches, better known as Hamband switches were designede pec I U for coil switching in high frequency transmitter service. How^ever, the heavy, wade-Zccd contacts, high quaUty ceramic insulation, and positive indexing which make these desirable for use^n transmitter plate circuits, also, give them exceptional capability for manyother switching functions. For example, the diagram above shows how a #164C (4 section Hamband switch), connected asa crcuit changer, permits operation of two separate RF chassis from common power supplies anda sin. e modulator VHF operators in particular, who operate separate rigs above and be ow 50mIcvcres w 11 recognize the economy and convenience this arrangement adds to such a s a contact carrying abilitv of several hundred milliamperes and with 1000 volt insulation,this switch is entirely adequate for transmitter powers up to 100 watts. Tlie circuit shown was devised bv a dyed-in-the-wool VHF man to per
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
