The transceiver uses the down-conversion method on all amateur bands, and features five types of High-IP roofing filter. Narrow bandpass widths selectable are 500 Hz and 270 Hz for CW operation,2.7 kHz for SSB and 6 kHz and 15 kHz, which are suitable for AM/FM. These filters are automat...
Portable amateur radio revisited--3.Part III. Presents the design and construction of a compact antenna matcher for a portable amateur radio unit. Bandpass filter characteristic; Tuning capacitor; Roller inductor unit.JensenPeterR.EBSCO_AspElectronics Australia...
centerpositionpassbandpassbands SHIFTSHIFTSHIFT PassbandPassband Interference Interference IFcenterfrequencyDesiredsignalDesiredsignal ïRITfunction TheRIT(ReceiveIncrementalTuning)functioncom-wTocanceltheRITfunc- pensatesforoff-frequenciesofcommunicatingsta-tion,rotatetheRITcon- tions.Thefunctionshiftsthereceivefrequency...
Quick and Easy Bandpass Filters for Receiver Input Tuning by George G3RJV._(36kb) The "Direx" 40/20m DC Receiver by George G3RJV. (893kb) The "SCD" complete Transceiver by George G3RJV. (71kb). Installing the SPRAT CD by Tony G4WIF. This datasheet was created to assist with the ...
band switching is automatic, it simply senses the RF and switches band as needed, this happens nearly instantaneously, before you have even completed the first ‘dit’ it has switched in the appropriate bandpass filters . The metering is very effective and compares reasonably well with my LP100...
15 separate bandpass filters Adjustable Shift & Width, Notch, Contour Filter Audio Peak Filter and more Push-Pull MOSFET PA 5 – 100W transmit power (5 – 25W AM) 5″ Touch Display with 3D Spectrum Stream display Quick Memory Bank
I plan on make a new set of bandpass filters for the field day crew to replace the ones that I am not sure about. Filters I made for Field Day. These will be remade and better cases will be fabricated Since the lockdown and restrictions put in place due to the COVID-19 situation....
The future of Amateur Radio would be secure if we could all write checks for a few thousand dollars. Kid's Day is an investment we can all make...and you don't need to touch your checkbook! Make a New Year's resolution to share ham radio with the kids in your life. Throughout th...
Years ago I purchased a helical filter manufactured by Aerial Facilities Ltd. It’s beutifully made and has a much better response than the notch filter. It was originally on ~137MHz. I am still trying to tune out the lump slightly HF of the bandpass and improve the insertion loss. ...
I had 2 weapons at my disposal a 2m bandpass filter and the Yagi. The band pass filter works but Campbell Hill’s QRM was too much for it! On to plan B. I have learned through trial and error a Yagi is a potent QRM fighter on 2m and that proved to be the case on Campbell. I...