{"id":95,"date":"2017-05-09T10:31:00","date_gmt":"2017-05-09T00:31:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2017\/05\/09\/an-ne602-ssb-design-from-china-the-kn-q7-by-ba6bf\/"},"modified":"2025-07-20T12:36:36","modified_gmt":"2025-07-20T02:36:36","slug":"an-ne602-ssb-design-from-china-the-kn-q7-by-ba6bf","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2017\/05\/09\/an-ne602-ssb-design-from-china-the-kn-q7-by-ba6bf\/","title":{"rendered":"An NE602 SSB Design from China: The KN-Q7 by BA6BF"},"content":{"rendered":"
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Allison KB1GMX alerted us to this rig. Pete and I had been discussing with her various designs for SSB transceivers. I recently completed an NE602 rig. <\/b>

<\/b> I really like the KN-Q7 (click on the picture above for a closer look). The T\/R switching is much simpler than my use of three DPDT relays. It even seems simpler than the Epiphyte’s switching of the BFO and VFO frequencies. I also like the analog VFO and BFOs inside the 602s, but I think Pete would use an Si5351. The AF amp muting circuit is kind of neat. <\/b>

<\/b> I questioned the need for the extra IF amp for the receiver. My rig just uses the two NE602s and an AF amp circuit from the BITX40 module (2N3904 and an LM386), and with this I can hear the band noise floor on 40. But Allison points out that different bandpass and crystal filter have different losses, so with these components some additional gain may have been necessary. YMMV.<\/b> <\/p>\n

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Here is the kit manual: <\/b><\/div>\n
http:\/\/www.qsl.net\/bd6cr\/knq7amanual.pdf<\/b><\/a><\/div>\n
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Here is a video of VK2TPM putting his KN-Q7 on the air<\/a>:<\/b><\/div>\n
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