Ramsey D Digital Multimeter

Ftollable, aticurftip iiiij-irii inufl-suromanls at an flmsjinflly low CMt * IrHJne cotar codtfti push button , speeds range jcloclion lbs plasme tin Bland recessed npu racks * veriGJiJ protection on an Tar.q& z Ti digit lCP d *-p-iiiy *i n aulc tero, uto pourity & taw SAT indhofen Check iranfipjilijrs, diodos and LEDs wIlTi ihia pro-lftssionsi quality meter. Other fodturdi include docfbei sea if1 * von metering iysiem * 3' ' mirfOHlif Bf file * P tftJi(y switch 0 measuring fang atatv...

Oscillator

Age frequency and will be detected it allowed to enter the mixer. Fortunately, the designers incorporated the proper circuitry beginning at the antenna input and in the rf amplifier stage(s) to reject the image frequency. If you desire, you can determine that the image frequency on 10 meters falls within the 6-meter band The problem I had to solve was on what frequen-( v must the master frequency source operate to receive a 52 525-MHz signal and produce a 10,695-MHz output. I rejected using the...

Mti

ames t Patterson DAIG> K85tJ POBox 123 APO NY 09130 Why stop at 10 meters KB5LF's Hy-Gain conversion will take you to VHF just as easily. Several years ot converting CB sets to ten meters makes one really appreciate the built-in ability ot these little rigs. Those of us who are oj> erating them now on single sideband ur 1 M ( in attest to their stability, sensitivity, and clean output It was for these reasons t began experimenting uith the possibility of converting a ( B to stx meters...

Info

FM-5 PC Board Kit - ONLY 178 complete with controls. heatsmk etc. 10 Watts, 5 Channels, for 2M or 220 MHz TypiCSt Sotectivity Curv& S ot Receive and Helical Resonators IMPORTANT REASONS WHY YOU SHOULD BUY FROM THE LEADER 7. Larges selection of vhf and uhf kits in the world. 2. Exceptional quafity and low orices due to large volume 3. Fast delivery, mos t kits shipped sa me day. Complere, professional instruction manuals- 5. Prompt factory service available and free phone consultation. 7....

Lfc

7- 3MHz 10,6935MHz 11,2735MHz CF 3179.3KHz 10,7MHz 2pole 15KHz bandwidth 11.7MHz 2pole 15KHZ bandwidth 12MHz 2pole 15KHz bandwidth 21,4MHz 2pole 15KHz bandwidth 10.7MHz Spole bandwidth 7,5KHz at 3dB, 5KHz at 6dB 45MHz 2pole 15KHz bandwidth 20.6MHz 36KHZ wide CF 7.825MHz 12,6KC Bandpass Filter 3dB bandwidth 1.6KHZ from 11.8-13,4KHz 4 55KHZ+ 2KHz bandwidth 4-7 at 3dB 4 55KHZ+ lKHz bandwidth 6dB T ,in 12KHz, 60dB wax 36KHz

Flea Market Space

17 in advance. (Valid for all 3 days) Dayton KAMVENTION Box Z205. Dayton. Ohio 45401 Meet your amateur radio friends from all over the worid at the internationally famous Dayton HAMVENTION. Seating will be limited for the Grand Banquet and Entertainment on Saturday evening so please make reservations early. Noted humorist Jean R Sheperd, K20RS* will return for his third appearance as Banquet Speaker- His presentation promises to be outstanding in an all new banquet program format. If you have...

Satellite Supremacy

Sometimes 75 Watts just doesn't cut it with OSCAR 10. The solution Use WIGEF's 60-Watt uplink amp-stripline construction makes building it a snap Many hams who have followed the home-buill transverter route for OSCAR 10 have wound up in the 10-25-Watt output range and feel a little underpowered. You can build an effective, low-cost amplifier to get a good solid signal into the satellite without feeling guilty about robbing transponder power from the other guy. With 60 Watts and a net gam of 10...

Si Frequency Synthesizer

The SI-160 frequency synthesizer is the latest in a series oi laboratory instruments announced by Syntest Corporation. The SI-160 is an advanced 5-digil synthesizer' providing ECL signals into a 50-Oh m load over the range of 20 to 160 MHz, with a resolution of 1 kHz. Utilizing all solid-state circuitry and employing a single, phase-locked loop, this instrument provides higti performance and high reliability at low cost. Temperature stability is guaranteed to 1 ppm over the temperature range of...

Twin Oaks Cw Trainer

Twin Oaks Associates has announced a ne-v compuieriied Mo'secode ear-training program which is compatibJe with the Apple IJ family of personal home computers Features include programmed learning with behavior modification automated er user-seieciaDie menus variable speed and pitch, automatic grading of Student performance, and interactive routines C W Tutorsofl teaches character word, caJtstgn. and QSO phrase recognition it does this through an intotreiatpd series of passive and active learning...

Future Schlock

The strange tale of the KA5S experiment Was he a genius or a madman When t first started my experiments, I had no idea they would ead me to such arcane conclusions Like many others. I was just curious, And, tn true amateur spirit, was determined to breadboard my way to knowledge, I could not know I would be answering the question of the Long Delayed Echo or discovering what happened to the missing OSCARsf I began by asking why LHCP Left-Hand Circular Polarity signals could not be received by an...

Super Surplus Surprise

If s super 50 Watts on 160, 80, 40, and 30 meters It's surplus That means inexpensive It's the GRC-9 Still surprised The need for a low-cost rig for the new Novice for Field Day or camp- mg trips or just as a spare rig has surfaced in the life of every ham. Here is an answer to all those needs and at a price you can't refuse The GRC-9 covers the upper portion of 160 meters, all of 80 and 40 meters, and the new 30-rneter band It will operate with almost any antenna you can conceive of. I haven't...

Mfj Antenna Bridge

The new MFJ-204 antenna bridge gives an accurate reading o' -our antenna's re-sislarce up- to i gt Q0 Onms and covers all of he ham bands jp to 30 MHz When used to measure me resonant frequency of your antenna, you can check to see if the resonant frequency is higher or lower than desired. Tnen you can lengthen or shorten your antenna based on the information gathered ith the MFJ-204 antenna bridge. It's easy to use Just connect the antenna coa lead to the antenna bridge, set ihe frequency that...

Radio Uhf 255mhz

Fig, 5 New dr ver iina circuitry simplified . reveal a problem here, but it's worth checking. d Any time vou modify the capacitor values in a tuned circuit to change the resonant frequency, the value of capacitance found is only approximate Vou may need to change the value slightly in the actual circuit. This is due to the dynamic loading effect when a circuit is in operation. Fig. 4 shows a block diagram of the Hy-Cain transmitter section Also shown are the vco frequencies for both an original...

Publisher

TM-211A DCS a new turn in 2 meters 70 cm. The TM-211A 2 meter and the TM-411A 70 cm mobiles combine ultra compact si.Te with the added feature of a 7 pos tion adjustable front panel, allowing you maximum flexibility in both home and automotive installations' These compact transceivers also feature Kenwood's innovative DCS Digital Code Squelch circuit that allows you to program your transceiver to respond only to transmissions from stations whose radios transmit a pre-selected digital code. Both...

Edited By Perry Donham Kw

A LONG, HARD BATTLE is drawing to a close in Burbank, Illinois. In 1982 the Chicago suburb of Burbank enacted an ordinance thai virtually froze ham radio in its tracks. Among otfier things, the ordinance required registration of all radio antennas with proof of insurance , suspended the issuance of amateur and CB antenna permits for one year, and declared that any interference by a transmitter to any device was unlawful, wtth a penalty of up to 1000 for each day of violation After two and one...

Never Say

I am looking for Informaliun on lhe use and modification o the General Radio 1606 rf nnpedance bridge, George Ctiurpek N6FL fl39 Cambon Circle Ojil CA 3ZQ3 Ocvs anyone knovi it a rnodiUcation tria can be mace to lhe Kenwood TR-75 0 that will enable it to be used on the entrre . metef a teur tar d A , n- 1 be appreciated ano 1 wilt pa gt an copysng costs m oived Dave SUpnowski KC3AM 73t W Birchtree Lane Clay mon E 19703 I need a copy o the scherttallc am insn- uaI tor an ElCO model 460...

Mhz Microwave Downcooterter

Model RP . . 75 35 miles Send check or money order to K amp S ENTERPRISES Box 741 -,6S For 'he ftam tnal warts a fttU mon perfomiantp out oi i fr- flanflrr dui rs ftnited it tarn our CI 33 on a 18 fool Doom is the way to go For those thai want MONO SA JO pr'tormance oui of a Trr-Bander want to hear better, and be Jouder Ihe CL-36 5 for you For Ihe ham that wants to start right at the top the pno-3 7 is Ihe antenna mat witi give y ou king t rhe hhir oerformance fl is the bnoadesf banrt-edL...

Czechoslovakia

Ftudoff Karate OK3KFQ ARC Koivenskeho 1477 8 955 07 Topotcany Czechoslovakia CRC, PO Box 6fl, 113 27 Praha 1, Czechoslovakia. is oiving this award 7 e Sfa vsnsMo Award Is issued by the OK3 DX Club of laaio Amateurs of Slovakia to all ireensed amateurs who provide proof of contact with siaiions working Jn different districts of Slovakia 0K3, OLB, OU9, and OLG districts listed in Fig i after January 1, T946, as follows 1 Stations In countries abutting on Slovakia SP. UB. HA, OE need 35 districts...

R

I purchased a Kenwood TS- 30S recent Jy and have been extremely pLeased with the operation or the- rig with the acception of the scanning feature Whether you're m program or memofy scan modes, the scanner does not stop on ar. acbve fre Quency In trie memory scan mode it pauses for about one second on each channel and men continues on to the next one. hemer me frequency is busy or not in the program scan mode. U scans a band of frequencies beiween an upper and low-ei limit set oy the operator to...

Reconditioned And Lab Calibrated

Hp606a SIGNAL GENERATOR 50 KHZ TO 65 MHZ 0 1 MV TQ 3V INTO 50 OHMS, 400 1000 HZ MODULATION, CRYSTAL CALIBRATOR 375 00 HP608C SIGNAL GENERATOR 10 MHZ TO 460 MHZ 0.1 MV TO IV INTO 50 OHMS. AM CW OR PULSE MODULATION, CALIBRATED ATTENUATOR 345 00 HP614A SEGNAL GENERATOR 900 TO 21Q0 MHZ 0.5 MV TO IV INTO 50 OHMS, INTERNAL OR EXTERNAL POLSE OR FM MODULATION CALIBRATED 00 HP610B SIGNAL GENERATOR 3 8 GHZ TO 7 6 GHZ 0.1 MW TO .1 V INTO 50 OHMS. CALIBRATED OUTPUT INTERNAL QR EXTERNAL PULSE OR fM...

Bearing And Distance Chart

Pages of data lists Amenrta headings and distances to 600 Locations worldwide Compuier-generaied chart is based on your QTH User's p Hde included. Allows you to aim your dipole or beam toward areas yoti wish to ark Legible print, bond paper, viityt cover,, snipped flat 510-00 complete CA add 6V, Dawn VacKey Box 1157 Fetton CA 9501B XYL NW6Ui OSL tor inf isampie BNB267 tSGHi COUNTER. Systron Donner 103 I292-S500. Motorola T1012A bench power supply 15 V dc at 30 A, 0-35 V dc al 20 - 0 -135 V ac...

H T

A more complex version of the cabinet in Fih 3. too many holes in the wrong places. The original piece serves as a perfect guide for bending a new one Photo D shows two power supplies in identical boxes. One supply, however has a home-brew aluminum bottom to go with the dark top left over from a dead project. From the photo, I cannot tell which is which hg 5 is an example of hybrid home-brew lt abinetry The cabinet is a common chassis base. The bottom plate is perforated aluminum. With...