Autek QF 1A. Discussion in 'Ham Radio Discussions' started by KB4MNG, Feb 1, 2013. Thread Status: Not open for further replies. KB4MNG Ham Member QRZ Page. I see on ebay these audio filters occasionally come up. I see they get favorable reviews. Anyone tried one on cw? Categories Categories VA1 RX VECTOR ANALYST The pocket-sized VA1 is designed to check and adjust antennas, feedlines, and RF networks. It includes a microprocessor, A/D converters, and a low-power "transmitter" with 4 digit frequency readout, continuously variable from 0.5 to 32 MHz in 6 bands.Like its little brother, the RF1, it measures RF values of true impedance (0- AUTEK RESEARCH QF-1A SSB/CW/AM Filter for Ham Radio Operations - $126.01. Autek Research QF-1A SSB/CW/AM Filter for Ham Radio Operations This filter is in great condition with minimal wear for its age. This item was recently removed from an active and operational ham station, and is expected to be fully operational. U239 Autek Research QF-1 $39.95 SOLD Audio Filter This Autek Research QF-1 audio filter features: Peak, Notch and Low Pass. Input is via a hard wired ? inch cable off the rear panel.Operates from 120 VAC. [05/06] UI69 Autek Research QF-1A $64.95 SOLD Audio Filter This Autek Research QF-1 audio filter features: Peak, Notch and Low Pass. View and Download Autek Research WM1 instruction manual online. User Guides and Service Manuals. Manuals > Autek Research > WM1 > Autek Research WM1 User Manual. Size: 1.61 Mb. Download. Contact Us Autek Research QF-1, Autek Research QF-1A, Autek Research RF-1. An antenna is an extreme case of Z. The circuit board should be hold in place with 4 screws. I connected these three parts into several series and parallel combinations in order to create a set of expected values. Autek research wm-1 manual. The following are of particular interest to teen drivers. 2014-10-16 01 10 - 2014-07-16 18 07 - 00681984 Microsoft Corporation C Windows System32 termsrv. mkdir apps - contains personal installed applications 2006-09-11 14 05 - d- C Program Files Spyware Doctor Mapping out legal rights L Temporary Internet Files Content. Radio Communication Manuals & Magazines; Guaranteed Delivery. see all. No Preference. 1 day shipping. Save autek qf-1a to get e-mail alerts and updates on your eBay Feed. + Items in search results. New Listing 1 Autek Research QF-1 Vintage IC Active Audio Filter for Ham Radio Operation These manuals are available for download and free of charge. AUTEK RESEARCH WM1 user guide original.pdf (735 KB) Autek WM1 SWR wattmeter retyped.pdf (484 KB) Autek WM-1 Watt Meter and schematic.pdf (3 MB) This is the BAMA archive. These manuals are available for download and free of charge. Autek VA1 Antenna Analyser Review. By Steven Greenyer. Early this year I emailed MJF Enterprises to inquire if they made an antenna analyser that operated at MW frequencies, the answer was no. By chance Jim Searle from Dunedin visited an Oamaru Branch meeting at Waianakarua and had with him an Autek VA1 Antenna Analyser Review. By Steven Greenyer. Early this year I emailed MJF Enterprises to inquire if they made an antenna analyser that operated at MW frequencies, the answer was no. By chance Jim Searle from Dunedin visited an Oamaru Branch meeting at Waianakarua and had with him an IC Audio Active-Filter QF-1 Amateur-D Autek Research; Wesley Chapel, FL, build 1977 ?, 1 pictures, 3 schematics, 2 semiconductors, United States of America