Optimized QRP Transceiver for 7 MHz
An Optimized QRP Transceiver for 7 MHz Here is a rig that provides real challenge for the QRP home builder. Nonetheless, this is a classic circuit and a favorite in the
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50 July 2002 also be protected. The method of protection will change, how-ever, since the interface is electronic. Once the peak operating interface voltages are determined, it is relatively straightfor-
From April 2006 QST © ARRL Figure 2 — Ultrasonic dish assembly. Figure 1 — Simpliﬁed block diagram of the ultrasonic detector. at full blast, and the ...
Amateur Radio Emergency Service@ ARES@ Registration Form Name: Cal Sign: Mailing Address: City, state, ZIP code: e-mail address(es): Home phone number:
QEX – May/June 2013 7 important role in the generator. A DDS chip like this one builds the waveform using discrete voltage samples whose amplitudes
Page 2 This manual is intended to serve as a quick trainer and reference for amateurs deployed in the field for emergency services work, primarily through the ARRL Amateur Radio Emergency Service (ARES).