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KN-Q7A SSB Transceiver Kit


A popular 80/75m or 40m or 20m single band SSB transceiver kit designed by BA6BF. 10 watts PEP output (5 watts PEP for 20m). Sensitive and selective receiver. Multiple frequency options.

Widely introduced by CQ Amateur Radio magazine in US, CQ Ham Radio magazine in Japan, RadCom magazine in UK, Amateur Radio magazine in Australia, and some other brief introductions in other countries since 2012.

eHam product review

manual for PCB V2.2, including schematics and partlist for 80/75/40/20m

Unit Price: 115 USD. Shipping and Handling: 12 USD.

Frequency Options

KN-Q7A Speaker Microphone 


A handy and must addition to the KN-Q7A kit. The new PCB version 2.2 now supports speaker connection in microphone connector.


Unit Price: 25 USD. Shipping and Handling: 5 USD.

R3500D ARDF Receiver Kit


R3500D is the upgraded version of the well known PJ-80 80m direction finding direct conversion receiver kit. 3500~3600 kHz coverage. Color is random.

R3500D English manual including part list and photo of the PCB assembly

PJ-80 step by step manual is still a good reference

Note that the LO frequency is at half of the working frequency. It is by design, no worries.

Unit Price: 32 USD. Shipping and Handling: 8 USD.

R3500D ARDF Receiver (Assembled)


R3500D is the upgraded version of PJ-80 assembled receiver. 3500~3600 kHz coverage. Color is random.


Unit Price: 39.9 USD. Shipping and Handling: 8 USD.

CRK-10A CW Transceiver Kit


A tiny 40m or 30m CW transceiver kit designed by BD4RG. 3 watts output. Built-in keyer same as HB-1A or HB-1B. Multiple frequency options.

eHam product review

manual including part list


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