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Although that receiver is a broadcast-all-frequency portable radio, I
think that this info could be of some interest to homebrewers and especially beginners. Many young future amateurs often ask me where they could buy a good amateur-band receiver. However, all the devices in the market today are transcievers, which are quite expensive and you must have a licence, too. So, I could not give them a satisfactory answer. I usually recommend some kit and my technical support, but this seldom works. The other day I had an opportunity to use a Sony ICF-SW7600GR receiver, and I was pleasantly surpised. The receiver is a double conversion superhet; it has all amateur bands, SSB mode (USB and LSB), CW, a BFO and an attenuator in the antenna. The VFO is a PLL covering all frequencies between 150 kHz and 30 MHz. There as a key-pad where you can type in the frequency, but after that you can change it in 1 kHz steps up and down by means of four press-buttons in the lower right-hand corner of the receiver. Finer tuning is easy with the BFO. The sensitivity is about 1.5 microvolts, and the selectivity about 4 kHz. Since the CW signal is strictly one-sided, it is easy for a homebrewer to add an active AF CW filter, if he thinks it to be necessary. I use the RX also as a precision and very sensitive frequency meter for the HF oscillators I build. I think that SWL listeners, and QRP TX builders could use that receiver. Since the RX has been catalogized as a general consumption produce, it is easy to order it with any Sony seller. The price is about 170 dollars. This is not an advertisement, because I have not any connection with Sony, but I believe that this info will be useful to amateurs. I have been licenced since 1953, being a half-century homebrewer, and I am glad that I could find such a product in the market. You can find something more about it at http://stephan.win31.de/sony7600.htm. You can also read about my Tayloe homebrew receiver at http://www.hanssummers.com/electronics/gallery/4/. Best wishes, Bozidar, 9a2hl |
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