The OpenQRP transceiver (Photo: kanga-products.co.uk)
Graham Smith (G3ZOD) writes:
“Kanga Products (UK) provided the first Open QRP 40m transceiver kits at the UK National Hamfest on 27/28th September.
The kit is priced at £89 (GBP) and has an LCD display and front panel controls for Tune, RIT, RF Gain, and 6 push buttons. Output is 6 to 8 Watts at 13.5 V. [T]he Open QRP transceiver also includes a separate chip that decodes incoming CW and CW sent via paddles!
The spec. is available here:
The transceiver was designed by Steve Elliott, K1EL, of WinKeyer fame.
(Kits are also expected to be available in the USA at some point from a separate supplier.)
I was fortunate to be able to purchase one of the kits at the Hamfest. Although I haven’t yet had time to put it together, one purchaser already has his transceiver up & running.
This is an exciting product for us in the UK, as normally items like this are imported from the USA, suffering high tax and import charges.
It begs comparison with Ten-Tec’s Model 506 Open Source QRP CW Transceiver, which is more or less the same concept based on Arduino technology (probably the Rebel was inspired by K1EL’s design, which he started in 2009). The Open QRP is single band and a kit, whereas the Rebel has two bands and is ready-built. The Open QRP has an LCD display and 6 push buttons, where as the Rebel has no display and two push buttons.
When UK companies sell USA amateur products such as the Rebel, they quite often adopt a “dollar – UK pound equivalence” pricing, which makes them far more expensive here than they are in the USA (although the UK companies do have to shoulder the import costs). On this basis, if the Rebel is priced at £199 (GBP), it will make the Open QRP kit less than half the price at £89 (GBP).”
Many thanks for the info, Graham! Please let us know about your experience building and getting the OpenQRP transceiver on the air!
I saw a prototype of the FX-4 at the Dayton Hamvention this year. Initial impressions are that it is well-built and easily back-packable.
I will see about reviewing the LNR FX-4 after they become available.
Many thanks to Chris (K4RCH) for the tip!
(Source: LNR Precision)
It is has been a few months since we announced the FX-4 Transceiver but it is getting very close to being available for purchase. For those of you that are friends of our Facebook page or visited our booth at Dayton Hamvention got an early peek at it. Here is an updated picture and it will be a very sharp black color. Other pics are on theFacebook page. We have been making some last minute tweaks that we think you will really like. We plan to offer it for purchase under $500 and you can add your name to the wait list which can be found at the bottom of our purchase page.
|Transceiver size in inches
||4.10L X 2.8W X 1.5T
|Current Drain on receive
|Current Drain on transmit
||7.000.00 to 7.300.00 MHz
14.000.00 to 14.350.00 MHz
9.999.00 to 10.150.00 MHz
18.068 to 18.168.00 MHz
|Transmitter Max output power
||5 watts CW
5 Watts SSB
||-43dB at 5 Watts
|Side tone pitch
||550Hz to 1500Hz adjustable
||-3dB/ 2.6K -40db/ 4.5K
||1 Watt with 8 ohm speaker
||Iambic A & B adjustable speed from 5 to 40 wpm
||10 per each Band total of 40
||300KHz, 500KHz. 1.3KHz, 1.6KHz, 1.9KHz, 2.2KHz, and 2.5KHz.
||<5Hz after 5 minute warm up at 30c (<10Hz after 30 minute operation @ 40c)
I was very surprised to find this handy talkie, the Tokyo Hy-Power XT-751 HF handheld transceiver, at the Dayton Hamvention. This radio will cover from 40 meters to 6 meters in both SSB and CW. It will also have an internal ATU. It is only a concept radio at this point.
Tokyo Hy-Power hopes to have this radio in production mid 2014.
Readers, I just received this release:
A new kit from the Four State QRP Group and David Cripe (NM0S)
NM0S’s Cylcone 40M QRP transceiver. Look for it at Four Days in May!
Arising from Dave’s entry in QRP ARCI’s 72 Part Challenge Design Contest in 2010, the Cyclone 40 is an enhanced version of the original design. The transceiver designed for the design contest had 72 total parts, performed well, and won honorable mention. This improved version has less than 100 components and even better performance! The kit features all through hole parts and easy assembly. The receiver is a superhet design with very good sensitivity and selectivity, and tunes the entire 125 kHZ CW segment of the 40M Band – and does so at a comfortable tuning rate. A frequency readout is included so you know where you are at all times.
This is a complete kit, including the enclosure. A high quality board package includes the pc board, front and back panels, the sides, and top and bottom all of which make up the enclosure. The control and jack labels are silk screened in white letters and vividly contrast with the black solder mask, and the holes for the connectors and controls are pre-drilled. The ends are “dovetailed” together making a very rugged, easy to build, and attractive enclosure.
Features and Specifications
- Enclosure: A very nice predrilled and silkscreened enclosure is included. It’s easy to assemble and looks great.
- Ergonomics: Smooth solid tuning, a quiet receiver with QSK and well behaved AGC. Nicely laid out front and rear panels.
- VFO: The VFO is a simple PTO design, is very stable, and also quite easy to build
- Sidetone: Included!
- AGC: Audio derived, fast and smooth.
- Frequency Range: 7.000 – 7.125 typical.
- Tuning Speed: 10kHz/knob turn typical.
- Stability: 300 HZ the first 5 min after power up, less than 10 HZ/hour after that.
- QSK: Fantastic QSK! Full Break in, excellent muting, really fast!
- All Through Hole Parts There are NO SMT parts in this kit, and only three easy to wind toroids.
- Dimensions: 4.4 x 3.6 x 1.9″
- Power Connector: 2.5×5.5mm coaxial, center positive. Should be fused at 1A, fast blow at PS
- Antenna connector: BNC
- Configuration: Superheterodyne, 11 MHZ IF, 4 Crystal IF Filter.
- Sensitivity: MDS (Minimum Discernable Signal) -125, Typical, below the normal 40M band noise level.
- Selectivity: Four crystal, 500 HZ IF filter
- IMD3: 90 dB typical, better than most commercial gear!
- IP3: +10 dBm typical – another very good number
- Frequency Readout: 3 or 4 digit CW, 1 kHz or 100 Hz resolution (user selectable), developed by Adrian Hill, KCØYOI.
- Band Edge Marker: A band edge marker is heard at 7.001 MHZ
- Headphone Jack: 1/8″ stereo, standard earbud/Walkman® headphone compatible
- DC Current consumption: 30 ma typical at 13.6 VDC.
- Configuration: Stable, Wide Range VFO (PTO design), Efficient Class E Final.
- Spectral Purity: All harmonics and spurs less than 50dB below the carrier.
- Output Power: approximately 4W into 50 ohms
- DC Current consumption: 500ma typical at 13.6 VDC Will operate down to 9v DC.
- Key Jack: 1/8″ stereo, grounded shell, switching the tip keys TX. Contacts accessible for an internal add-on keyer
Kits should be available at QRP ARCI’s Four Days in May conference at Dayton, and will be for sale on the Four State QRP Group’s web site approximately May 20th. The final price hasn’t been determined yet but should be less than $100 plus shipping.
If you’re planning to attend the Charlotte, NC hamfest (March 8th and 9th), make a point to join the SOTA (Summits On The Air) forum. Christian (KF4LXB), provided me with details:
The forum itself is from 11:45am-12:45pm [Saturday March 9th] in the Cabarrus Room B. There will be total of five of us “SOTAteers” KF4LXB, W4ZV, KI4SVM, WH6LE, and W4ZTM with our kits. We hope to be able to set up a table outside of the conference room so we can have some extra “show and tell” time with our rigs for those interested. We want to get the word out to as many people as possible so we can share about something we all love.
Forum page: http://www.w4bfb.org/hamfest2013/forum_sota_webpage.html
Hamfest site: http://www.w4bfb.org/hamfest2013/hamfest.html
SOTA is serious QRP fun. Thanks for sharing this, Christian!
If you have a QRP related event you would like to publicize, simply contact me with the details and I would be happy to post it on QRPer.com.