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Reviews Categories | QRP Radios (5 watts or less) | QRPGuys Para40set Help

Reviews Summary for QRPGuys Para40set
QRPGuys Para40set Reviews: 1 Average rating: 5.0/5 MSRP: $$35.00
Description: A 40 Meter QRP "minimal arts" transceiver that evokes the
famous Paraset Transceiver of WWII fame; regenerative
receiver and crystal controlled 3-4 watt transmitter.
Updated and improved by KD1JV from his original MAS-80
design. Also available in an 80 Meter version.
Product is in production.
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K7BHB Rating: 5/5 Nov 7, 2017 20:27 Send this review to a friend
A great value, and loads of fun!  Time owned: 0 to 3 months
I just finished an enjoyable 5 hours building the Para40set by the QRPGuys. The kit was complete with all necessary parts (and none missing!) to get on the air. Several options for cases are depicted, all along the lines of duplicating the look of the original Paraset "spy radio", but my intention is to use the radio to implement an HF version of the small survival radios issued to military flight crews. This radio, properly housed, will be perfect for throwing in the glove box for contingency use, SOTA, backpacking, or "minimal arts operating" challenges.

The construction manual is brief, but complete with color-coded assembly diagrams and clear parts identification tables. Builders with some minimal experience will have no trouble following the steps to a successful result. Winding the small toroids will, of course, be the point of most friction for those with vision and/or dexterity issues. After the build, the close spacing of the three controls will impede some degree of easy operation, but the manual suggests options for mounting or relocating the controls for better ergonomics.

The regenerative receiver is sensitive, smooth and surprisingly quiet; not like the Heathkit "Twoer" and Lafayette Radio "Explor-Air" that I built as a kid. Selectivity is not great- there are no crystal filters or a SCAF- but is adequate for a quiet band. I got 3.5 to 4 watts of clean output with a great sidetone and QSK. The kit comes with 2 switch selected crystals, one for the classic QRP calling frequency, and another for the slow-speed Novice portion of the band (the one I'll be using, Hi Hi).

As I was aligning the receiver, initially I was unable to tune a range of anything other than 6.4 to 6.8 MHz. From prior experiences, I was able to correct this by adjusting the turns spacing on the receiver toroid, and minimizing the trimmers on the tuning capacitor. The construction manual is silent on this potential issue, and is a topic that I think needs to be added to the alignment instructions.

The tuning range covers the entire 40 Meter band, with more than 2/3's of the bandspread in the CW portion of the band, as it should be. The receiver does an adequate job with SSB, but tuning is touchy. The fine tuning control, plus the use of a larger knob on the main tuning capacitor, helps with this.

Overall, this is a well designed, good performing kit that, above all, is fun to build and operate. The 3-4 watts will get you plenty of contacts (to which K1, KX1, HB-1B, and LNR owners can attest), but for $35.00... not $400-$500.

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