Info

Table 7, Crounded-grid amplifier test results. All grids tied together untuned input * Power output of amplifier compared to power output of FT-7. Table 7, Crounded-grid amplifier test results. All grids tied together untuned input * Power output of amplifier compared to power output of FT-7. of driving seven different tubes with an FT-7, as shown in Fig. 1. The 6146 and the 829B tubes have the suppressor grid internally connected to the cathode and just don't function very well in...

Rapid Ii Charger

Our NEW AC version of the Rapid Mobile Charger Charge your handheld radio in 2-3 hours. Will not overcharge batteries due to the same automatic shut-off circuitry found in our Rapid Mobile Charger. The input is equipped with a UL approved transformer and the output with the appropriate charging plug. No adjustments necessary LED indicator shows current is llowing and all the proper connections have ceen made, Models available for Kenwood TR2400, Yaesu 207R, Tempo S1. S2. S4. S5. TERMS US &...

For The Serious Dealer Only

ST AfNLESS steel WHlP FlSERGLASS LOADfNG COIL - PA TENT APPLIED UO COILS to CHANGE - L SS N - ENTlfit T JNING Tune 3 2 TO 30 MHi FROM TH OPERATORS POSITION - FAST ANDSLOV, SCAN RATES The Modal MT-1RT mobile antenna lunes 32 to 30 MHj inclusive. 750 waits CW. 150Q watts PEP for hams, military, MARS. CAP, and commercial service Center loaded for hi h efficiency. Enables tuning to exacl resonance to wanted frequency Allows lull oulpui irom solid stale final's No worry about reduced output from...

Expanded

flfMfl i It* AH t T TAiLtS rthUlt tfcmui fV 'ijhjii f> W Ft * Hirtil eJl Al WbWNH J 17 G CpmiT iifiiii hi.i T rf.rfprtiwtmn c ' WB9TTE Jl2 t*t T& 6* Thf Idiot s Guide pulls no punches and doesn t snow you with nonessentials, but it does unlock some DXers secrets tor example Ho a to QSL What to say Where to place your antenna, How much power to use, Whose awards can you get. Why and When to use SSB or CW, and much more. . things that you need to know and information that Honor Roll mem...

Royal Order Of Hootowls

The Royal Order of Hootowls became a society in June of 1955 with the Llgag nomination and hand-drawn owl being sent to John Woods W7TMI, after burning the midnight oii with the originator, Lee Singleterry, Sr W7YJE, Dick W7VIC, Gordy W7UFE, and Tad W7WZK rounded out the charter membership, and the granddaddy of 50-MHz societies was born The Order became dormant with the passing of Lee, but in 1977h Don Abel WB5SND located Mrs. Singleterry and was granted permission to reestablish the Order...

Spectrum

Export Orders - Contact our international Dept t td fttMfr 'p& l 74J& & 1 J< ZKt J tm 2uai t Sut it 4 ow Pria includes Crystals high stability .0005 Your Call programmed into iDer Provision for Auto-Switchover to Btry. Pwr. Built-in AC Supply basic Panel Controls, Spkr., LED Indicators If you re looking for a new Repeater, but you really don't need (or can't afford) ail the features and options on our world famous, 'super deluxe' SCR 1000 4000, then our new economy line of SCR77...

Mode

Necessary to disrupt copy, due to the narrow Internal filters. Performance in the RTTY mode was even more impressive than CW. The MBA copied every bit as well as most of the com-puter'mterface combinations available. It is at a disadvantage at 300-baud ASCII because text fties by so fast you cannot read it it is doubtful that you'll encounter much 300*baud ASCli. however. tf you have a generai-cover-age receiver, you may enjoy checking out the news services, AEA thoughtfully includes an order...

Fum

RCA Cosmac 1802 Super Etf Computer 106.95 The Super Elf is a Small s- te t ard computer irwl does many big things, (t-- ar> computer for iramng ac torieaT . pfO rsnti g w-rh n machne tanguage 3nc yet ns easily erpaTdeo *ith additional memory. RtU Basic. ASCII lieybwrdJ, ndeo ciar*tnr Qenetaiwn, etc ROM monitor Stare a no Modu displays. Eimgie step. Optional address dispiuys Power Supply Audio Amplifier and Speaker. Fully sockct& d lor all iC's Full documentation The Super Elf includes a...

Newsletter Contest Winner

Picking a monthly winner for 73' Newsletter Contest is no easy task. There are literally hundreds of entries to sift through. Each month we narrow the fiefd to four or five outstanding publications and then make the tough decision. Almost without fail, each month s collection of runners-up has included at least one newsletter from a Chicago area club. For some reason unknown to us, the newsletters com ing from that part of the country are usually first-rate. Perhaps there is some sort of...

O

Static discharges or nearby lightning strikes. The surge shunt can be used with both receivers and transceivers with up to 200 Watts output. Convenient UHF-type coax* iai connections are used, permitting use into the UHF range. For more information, contact the R. L Drake Company, 540 Richard Street Miamtsburg OH 45342 telephone (513)-866-2421 CODE*STAR is a code reader designed for Novices, SWLs, and veteran amateur radio operators. It should also be very useful to persons learning or trying...

Keim

Q You pay LESS at AES .just Call TOLL FREE 1-800-558-0411 - ask for our DISCOUNT DESK TS 13DS 2G0* PEP 8 band digital Xtvr . & 759 95 TS 130V 25w PEP 8 band digital ic.r 599 95 PS-30 m po ri suppi, to TS 130S 144,95 PS- 20 4 5A poy r supply far IS 130v 77.95 OFC-230 Digital frequency ciflnfroller 289.95 SP-40 Compact mobile Sf-120 External VF0-120 Analog remote YFO 64 95 YK-88CW 500 h. W filter 62 95 YK-88SN 1 8 KH SSS AT-130 8 band antenna tuner 144.95 MB 100 Mobile WH-30S to 2) or MC-35S...

Exchange

QSO number (beginning with 001) and state, province, country, or Texas county, Novice 3710, 7110, 21110. 28110 Phone 3940, 7260. 14280. 21370, 28600 CW 3565f 7065, 14065. 21065. 28065. All non-Texas stations score points as follows phone contact with fixed station in TX 1 point CW contact with fixed station in TX 2 points phone contact with mobile station in TX 5 points and CW contact with mobile station in TX - 7 points. Multiply by the number of Texas counties worked 254 max.). Ail Texas...

Review

-A SECOND GENERATION MORSE RTTY READER RTTY.'Morst-code readers are rapidly gaining acceptance in the amateur community, and for a good reason a reader allows people to sample the activity on RTTY without making The substantial outlay required for a complete system. And while few will admit to ft, there are an awful lot of people having an awfuJ lot of fun copying CW with these things Consequently, AEAns introduction of the MBA-RO reader came as no surprise AEA has earned a reputation as a...

Help

Wanted any information on conversion of Cobra 21XLR to 10-meter FM, Uses Uniden PO 199AB board with crystals for 10*24. 10,695, and 36.57 MHz. Has anyone converted this rig Help i need a schematic and or manual for an Advance instruments oscilioscope model OS 15A sometimes called Xetex). I will copy and return. All your costs giadiy paid. Walter S, Jackson KB3LH 261 Irish Road Berwyn PA 19312 I have the schematic for my WWN-vintage Hammarlund type CHC 46140 receiver, but no values of components...

Egad A Nine Tube Linear

But, no, I don't run all nine tubes in the amplifier at the same time. The photo represents the chassis used to test each of the tubes individually, I mounted all the sockets, wired the filaments and screen grids, but the plate and control grids were moved from tube to tube during the process of experimenting, In the case of grounded-grid, filament wiring also was altered. There are a tot of reasons for buying an FT-7 or a TS-120V or an Argonaut. They are great for...

Closeout Special

YAESU FT-207R 2m FM Hand held Microprocessor controlled. 800 channels keyboard entry 144 to 148 MHz. LED display, up down manual or autoscan. priority channel A memory back up 4 600 kHz.offsets or any odd splits 2 watts or 200 mw output. Witt Nicad pack lt vaN charter, tie antenna, earphone amp strap 7'rh 2y' 2Vdp 1m iiss NC-1A 15 hr drop-mcter t SALE S44M NC-3A 15 4 rirdrojHnchgr AC adapt. SALE 79 fBA-1 Baiter sleeve Iqi N IA jA NBP-9 FNB J Eatra JvCad bafefypacfc 23M NC-9S Eitra lb-hr wall...

Ws Engineering

N.J. 08021 HR. PHONE 201-852 0269 How you can switch to eilher 24 hour GMT time or 12 hour format Double usefulness Switch able Seconds readout tor accuracy 10 timer. Alerts e ery 9 minutes atter you tap the button Also use as snooze alarm. Observed timer Just start clock Irom zero nrj nrte end lime of event up io hours Alarm. For skeds reminder or wake up use Synchronizable with WWV. Fast Slow set buttons lor easy setting Beg. bright, blue digits vacuum fluorescent are 0...

Dl Krlj Dummy Load

Palomar Engineers Vlf Converter

The DL-1 is a unique chemical dummy load. UnUhe messy oil-filled dummy loads, it wjh not Teak Sealed ready to use Max. 1000 watts PEP for 15 sec. SWR Jess than 1 5 1 225 MHz Portable only 3Vs x 4 -. P.O. BOX 21305 S. EUCLID, OHIO 44121 The famous Palomar Engineers VLF Converter with new added features Antenna bypass when turned off. Special amateur and SWL models Hie VLF Converter shifts all the signals in the 10 to 500 KHz band up to the 80 meter band so you can tune them on your receiver....

Tune

Spond to rapid variations in the level of the input audio signal. The result is distortion and poorer performance, The RF-670 s photGCOupler variabie-gain amplifier design permits a very rapid response to input levels resulting in c ean output. The RF-670 features Veicro pads for easy mobile or base mounting. For more information, contact MOM Communications, 858 E. Congress Park Drive, Center-vitle OH 45459. Reader Service number 462.

Jjt Distributing

G l 1. 90504 Call COD Orders to 213 515-6800 R-1143 WRR-3-14-600 Khz AM -CW-FSin five fends mechanical difliiai lunrng WrtWAxftVt ao ids Usee checkec 295. Manual partial repro 15 R-388 URR - 0 5 30 5 Mh In 30 tjands, rackmount Mll-Coiltns 5U3 10' jx19x13' 55 lbs. Used, chftcm 400. Manual, partial repro 10. HAMMARLUND SP-600JX - 0 54-54 Mhz AM CW In seven bands, rack mount 1tTMi9 i7, 85 lbs Used, checked 285 Manual partial repro 10. R- amp 46 ARR-41 190-550 Khz and...

Pnjl V T

QI.C IC ai i gt au 3 iw 01 P ID W 31. E 10 41 BLi Bit LQ 2 tO-H Mhi w 3 pc r 10J MH cr gt - t Fih 10mir M V from inj il vtH Oui 6mtf Hi i-iflicnd 10 Mhf out. . . . m M H 11 mixluli iriLlgJti pafc try -i.i filler SKKi tf deeply FM deWulof , . ,, T TTn lir-4- IiibpHt4 H-fc-H a M H Mo HM'MUt mi I I 4 I j-piji I a j g i i i bJ R M H I I t 4 2mi IV' C-ajRr- gt m 1C MSiki-llK iUhtBf 2 mir ppmamp Qm m 40 out rclj gt nil _________ mmn T f iTip tn Ad kCi- LUiide. Oi iJi i Ht -1 m PAIJ4 15 kii tvr l1...

R Receiver

Trio-Kenwood Commumca tions has ust announced a new general-coverage communications receiver, model R-600, covering 150 kHz to 30 MHz in 30 bands. The use of PLL synthesized circuitry results in highly accurate frequency control with maximum tuning ease The unit features an easy-to-read digital display, AM, SSB, and CW reception, built-in i-f filters, noise blanker, rf attenuator, S meter. The Trio-Ken wood Communications TR2500 hand-heid. 152 73Magazine January, 1982 The Trio-Kenwood...

Cubic Communications

CorpsrjrciT tyt ccmp nies Scott el son 7 KUF 8o Snowbird v a e Snoxviwd UT 84 lt W since the mountains started influencing my life. As a youngster living m New Hampshire, I remember reading books and looking at photos of far-away peaks bearing no resemblance to the rolling hills of New England, It took years, but in the early seventies I moved to Utah and took up residence in the Wasatch Mountains at Snowbird, one of the country's premier ski areas. Now, snow-wise and...

Indiana Quick Charge

Find something that people want and fill the demand. That is how fortunes are made. The de mand for a better way to charge nicad batteries came about shortly after synthesized handie-talkies arrived on the amateur market Frustrated by the slow charging rate of the simple plug-in adaptors and horrified by the Jack of availability and high prices for the official accessory chargers, hams learned to roll their own and before long several enterprising fellows started selling them. I don't know if...

Dx News

Stacked Radio Beams

A6XJA, United Arab Emirates, showing up on 15m around 21.200, Operator is Jan Keur QSL via PACLPor direct PO Box 2730. Abu Dhabi, United Arab Emirates. A6XJC keeps occasional schedules with WB20HD near 26.688 for short lists around 1500 1530 GMT. Claim ing valid license and expects to be there for some lime. QSL via PEQMGM. A9XDO, Bahrain. Operator Howard showing up on 28.607 at 1545, 14.236 at'0200, 14.020 at 0345. QSL via KA4S. A9XDA, Paul, around 14 182 at 0200 QSL via N48PP, A22ZMt Botswana...

World Time Watch

The first microprocessor watch made especially for hams The HAM 1 functions include local time, world time, fG.M.T. too count-up and count down chronometer, day month, date, alarm ar gt d hourly chime. It's ideal for log-Weeptrig, DX fime conversion and 10 minute I.D. timing. The HAM-1 features a high contrast Seiko display and solar celt battery assist. Battery fife is better than 4 years. The HAM is water resistant to 20 meters, the case is 100 solid stainless steel and the crystal is scratch...

Worked All Hawaii Awards

Sponsored by the Big Island Amateur Radio Club, these awards are available lo all licensed amateurs Contacts made after 00C0Z January 1, 1982, are valid for the awards, Any mode on any band is acceptable No terrestrial repeater contacts will be accepted, and only fandbased stations are valid for the awards. Do not send QSL cards, A list showing the time, signal report, mode, cailsign. and band, certified by a club or society official, is sufficient. The fee for any award is US S3 50 three...

Element Multiple Choice

1 During 1961, the FCC issued a number of amateur s at ons special authority to experiment with a new communications mode. This technique, which uses 10 to 100 times the bandwidth of conventional modes, is known as 2 Spread Sideband 3 Spread Frequency 4 gt Packet Radio 2 According to the FCC, John W, Munson, Jr,t K6EOA, was sen fenced to 3 years probation, fined 500, and ordered to undergo psychotherapy for saying the following over the air 1 Is this frequency in use 2 1 would love to shoot me...

TVRO Signal Source

In order to do any experimental work at UHF or microwave frequencies for amateur or TVRO projects, certain minimum equipment immediately becomes necessary The first requirement for this work is to be able to generate known signals at these frequencies, to modulate, and to detect them. The use of microwave equipment trom ilea markets is not satisfactory bee ause oi its limited availability and its cost, and because relatively few units cover the frequenc range ot interest 500 MHz to 4 GHz Photo...

Leader Ldm

Leader Instruments Corporation. of Hauppauge, New York, now offers a 3V digit digital multimeter that fills the need for both laboratory and field work. The new LDM-855 offers automatic ranging, semi-automatic zeroing, and a large LCD display for straightforward, hands-free operation. When manual range or function sefection controls have been changed, a momentary audible tone is heard When used in the resistance mode or or checking continuity, the tone is sounded continuously when short-circuit...

Use Of Additional Digital

CODES BY AMATEURS PROPOSED Docket No. 20777 and PR Docket No, 81-699 In response to a rulemaking petition by the American Radio Relay League IARRL . the Com mission is proposing to amend Part 97 of its rules to permit the use of new and experimental digital processes by amateur radio operators. Currently, the only digital codes authorized for amateur use are ASCII American Standard Code for information Interchange and the Baudot code. Such limitations may be discouraging the kind of innovation...

Ham Help

In order to repair my Hallicrafters receiver, model SX 122, I must find a schematic diagram and my problem is that I can't even find Haflicrafters in the States let alone the schematic. A tag on the receiver shows it was made in Chicago but the Embassy here has no Chicago address. What to do Has it gone out of business Any help will be greatly appreciated indeed. Hal R Cozzens Managing Director P.V.S. Enterprises Co., Ltd. Need manuals for Ballantine Labs model 300E or 300H also TS-323 AU...

Power Supply Triple Output

25 Volts 18A 5 Voits 8A 15 Volts 1 25A Isolated independent operation Constant Voltage Regulation 25 Volt line adjustable with 10 turn pot from 23.5 V to 28 Volts. 120 Volt - 60 Hz input Fused- Has both t MHZ and2 MHZ TTL - outputs Hermetically sealed Ultra high stability over wtde temp, range originally cost over 40.00 each - we made a super purchase from a major computer manufacturer 5 Volt operation -fits standard 24 pin socket-Manufactured by Motorola oscillator division.

Rf Speech Processor

Daiwa has announced a compact audio speech processor that rivals the performance of rf types at an economical price. The photocoupier design delivers a high level of processing with a minimum of distortion. Traditional audio-processor design Is handicapped by circuitry time constants that limit the ability of the processor to r amp -

Engineering Consulting

V6Y2A8, CANADA v Se amp List of Advertisers on page 130 Now, for the first time Every amateur operator can enjoy the unparal felled freedom of a private phone patch in an economical package. The dramatic new CES 5Q0SA Autopatch is all the equipment you need to patch an FM base station to your home or other telephone line, without expensive repeaters, cavities, or other equipment. Connections with any standard FM base station are rapid and simple, Bypass the...