Autek qf 1a schematic software

Va1 rx vector analyst the pocketsized va1 is designed to check and adjust antennas, feedlines, and rf networks. Mar 31, 2018 as i have shared in many contest blog entries, the autek qf 1a has become my favorite external audio filter. It includes a microprocessor, ad converters, and a lowpower transmitter with 4 digit frequency readout, continuously variable from 0. As the name indicates, quality first software gmbh is dedicated to quality assurance for the software development process.

So when i hear something about noise reduction or filtering on af it always makes me think of howling cw and scratchy voice. The autek is muc h better in this regard, and also has a fine tuning knob for even better resolution. He lives about 50 miles to the north east of me, he used to live here where i am but moved out to the sticks which is not very sticky anymore. Autek research still in business probably not some years back i called them, here in florida, if i remember correctly. These are directly forward of the right transformer screw as viewed from the front of. I wanted to order a replacement plastic meter cover, the guy on the phone acted like i had just committed a cardinal sin. Autek research ssb cw am audio filter, qf1a inspection. High selectivity will be found to be invaluable in very heavy qrm or pileups, allowing you to hear signals inaudible at. Autek research rf5 vhf analyst bottom line the autek rf5 is a handy and reasonably accurate device that can serve a variety of testing and measurement functions at vhf and uhf frequencies. These manuals are available for download and free of charge. The autek research of a filter radio amateur 051983. On the website of manufacturer id find instruction only. Modify your amateur radio to get better performance, or more functions.

Wesley chapel, fl manufacturer in usa, model types from united states of america, 2 radios, 3 pictures, 5 schematics, tubes, radio. The qf1a gives you your choice at considerable increase in manufacturing complexity. Autek research ssb cw am audio filter, qf1a inspection, part1. Another question i need the schematic for ameritron qsk5. The autek device is very handy because it is tiny and runs on batteries for a long time. In place of the nl diodes, i wired in the circuit board from an old mfj. A vintage cb radio from the seventies is not todays modern hf rig. Btw the manual has a bit of a schematic, but the choke is not shown. Autek research ssb cw am audio filter, qf1a demonstration. One of the most useful accessories i have for vintage receivers is an autek qf 1a 70s era external active audio filter. Qf test tests itself every night with more than 20.

If you squeeze the cabinet or loosen the screws it works. Sizes, shapes, design, and functions can all be custom built to fit any circumstance. Autek research qf 1a filter systemqf1 for saleqf 1a filter cw ssb am used but in good condition free classifed ads used surplus electronics. Second hand autek research qf 1a ssbcwam audio filter, it is an active af filter peak, notch, low pass with variable frequency and selectivity.

Autek research qf 1a active audio filter discussion in amateur radio gear swapshop started by klondike mike, aug 9, 2017. I wanted to order a replacement plastic meter cover, the guy on the. I thought i would give his autek qf1a chance and was fairly blown away. Page 1 autek research qf 1a active audio filter user manual. The tuning resolution on the mfj frequency counter is so tight that its really tough to pinpoint the exact frequency of the dip. Other useful information would include your experience with similar products, infomation. In true dont have a clue or schematic, shotgun approach fashion i. Qftest is a professional tool for automating functional tests for java or web applications with a graphical user interface. Now, if you had a cranked down autek qf 1a on the r75 theyd probably be really bad. Printed on higloss 28lb high quality acid free paper for a professional finish that wont turn yellow with. Autek model qf1 audio filter service manual download. Amps autek wm1 schematic or help i have a problem with an autek wm1 measring the output of my. The difference between the qf 1 and qf 1a is that the a added a hp filter selection and included a notch filter on the input.

The autek tends to agree with my rig much more often than the mfj. In addition to providing much needed audio tailoring and notch functions, this device also. Other annoying artifacts can be eliminated incidentally via the peaklopass filter paths of the qf 1a. More than 7,000 qf test licenses in over 1,000 companies. Your autek qf1a audio filter is the product of several years of development by the originator of commercial active audio filters for shortwave communications. I got fed up listening to the various qrmqrn on ssb and not being unable to clean up the signal on my cobra 2000. It works fine as long as the receiver its connected doesnt have a lot of agc action.

Autek research qf1a active audio filter user manual. Solve autek research wm1 problem solve device problem. Mar 25, 2017 autek qf1a modification for audio level steve ellington. These are directly forward of the right transformer screw as viewed from the front of the unit. Autek research autek research, po box 7556, wesley chapel, fl 33545 usa. You probably wont hear ghosties on a receiver like the r75 with outboard dsp simply because the if bandwidth is too wide and the dsp even when cranked down narrow generally doesnt ring. However the ts570d is not equipped for spectrum analysis but software like commcat can perform this. Battery operation desired locate the rectifier diodes, d1 and d2, on the schematic. A passive lc audio filter for amateur radio use david r. So, if you have a problem, you must solve it in your shack. Have a like new palomar pw5000 triple meter set,has 3 control knobs and 3 throw switches plus window lights onoff switch on back,reads up to 5kw,can. An aquired used rf1 had problems from the start because the unit fails intermittently, usually when i need it most. Our contribution to this area is the product qftest the manual of which you are currently reading. Autek research qf 1a active audio filter user manual.

For the filters, the circuitry didnt change much, but the audio amp was replaced by a lm380. Power consumption is about 100 ma on the 15 30 mhz ranges. I decided to have a go and build the circuit from the schematic diagram. Printed on higloss 28lb high quality acid free paper for a professional finish that wont turn yellow with age. The manual is adequate, but it could benefit from some. Booth cabin double skinned walls are solid interlock panel construction, precoated finish and prevented with plastic film. Amps autek wm1 schematic or help, jim w7ry amps autek wm1 schematic or help, peter chadwick. As i have shared in many contest blog entries, the autek qf 1a has become my favorite external audio filter. The best filter i used at audio was the old autek qf 1a. I have no idea what it is worth these days any input on this would be appreciated in near new conditon. The difference between the qf 1 and qf 1a is that the a added a hp filter selection and included. The buttons sometimes dont function, the knobs have worked their way loose. Although many active filter designs pass themselves off as multi mode filters, as being equally useful on phone as on cw.

Insulated, rubber gasket sealed doors with positive internal lock bar in threshold base and solid header base, standard trifold 910 w x 86. This site helps you to save the earth from electronic waste. Its an older ham operator that has been doing this for awhile. Autek research qf1a active audio filter discussion in amateur radio gear swapshop started by klondike mike, aug 9, 2017.

Directing the radio and laptop audio run through separate isolation transformers keeps unnecessary groundmismatch hum out of the ears. Page 2 your autek qf 1a audio filter is the product of this switch and the selectivityfrequency controls several years of development by the. It includes a microprocessor, ad converters, and a lowpower transmitter with 4 digit frequency. Amps autek wm1 schematic or help i have a problem with an autek. The aea vhfuhf analyst which wont be much help on 160m. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. Found a more modern solution that i can use with this rig, a autek research qf1a ssbcw. Autek research ssb cw am audio filter qf 1a demonstration part 2 autek research ssb cw am audio filter qf 1a demonstration part 2. Autek research ssb cw am audio filter qf 1a demonstration.

But he was annoyingly famous for refusing to provide schematic diagrams or much in the. I downloaded the instruction manual and the first day, i was all sorts of confused. Describe your experience with the autek research qf1a and tell us why you give it the rating you did required. Autek qf1a modification for audio level steve ellington. Second hand autek research qf1a ssbcwam audio filter. Service manuals, schematics, eproms for electrical technicians. It includes a microprocessor, ad converters, and a lowpower transmitter with 4.

It works fine as long as the receiver its connected. My autek wm1 lighted version computing swrpower meter seems to have quit computing in that it doesnt show an swr reading. One of ihe faw exceptions to mis rufe is the autek research qf 1a. Pagina 1 di 2 rf5 vhf analyst the pocketsized rf5 is designed to check and adjust antennas, feedlines, and rf networks. Autek qf 1a external audio filter the box just above the swr meter tnc for packet computer running windows vibroplex keyers for cw swr meter desktop computer with 17 display and sound card ham software. This site is for hams there want all the best from his radioamateur equipment. Autek research qf1a active audio filter worldwidedx. I have a problem with an autek wm1 measring the output of my amplifier. Amps autek wm1 schematic or help, jim w7ry amps autek wm1 schematic. Because the ftmp is a dualreceive unit, both receivers now have a qf 1a. Here you will find instruction manuals, service manuals, user guides schematic, brochures etc. I am now accepting new manuals for inclusion in this archive. Like its little brother, the rf1, it measures rf values of true impedance 0.

In true dont have a clue or schematic, shotgun approach fashion i replaced all three ics with high quality sockets and new ics in case it was one of them. Autek qf 1a filter, along with the transceivers mainrx audio. Reading this thread i decided to breakout my trusted frg7 to give it a revisit. Page 1 autek research qf 1a active audio filter user manual page 2 your autek qf 1a audio filter is the product of this switch and the selectivityfrequency controls several years of development by the originator of adjust the response of the main filter all but the aux commercial active audio filters for shortwave notch. Request an estimate we manufacture a wide variety of paint spray booths to fit all types of budgets. Autek research ssb cw am audio filter, qf 1a demonstration. Your autek qf 1a audio filter is the product of several years of development by the originator of commercial active audio filters for shortwave communications since 1972. Antique radio forums view topic opinions on yaesu frg7. As i have shared in many contest blog entries, the autek qf1a has. I like them both and they are still in regular use. Ic audio activefilter qf 1 amateurd autek research.

Because the ftmp is a dualreceive unit, both receivers now have a qf 1a on the output. Autek research qf1, autek research qf1a, autek research rf1. Please read the instructions carefully for best results, and save them for future reference. Automated ui test tool qftest quality first software gmbh.