New MFJ-92xx QRP Transceiver

• Category: ham, new equipment |

Photo by MFJ

MFJ-9200 is a bold new addition to MFJ’s legendary QRP transceiver line, delivering unmatched six-band CW performance in a compact pocket-sized package. QRP radios have always been small in size, but thanks to direct-digital synthesis and microprocessor technology, the MFJ-9200 represents a quantum leap over traditional designs with an unprecedented number of features for a very affordable price.

The MFJ-9200 covers 80 through 15 Meters using computer-modeled plug-in filter modules that yield no-compromise receiver performance and solid QRP+ transmit power on every band. There’s also built-in iambic keying with a manual-key sensor, a programmable CQ message, and seamless QSK T/R switching. DDS frequency control delivers rock-solid stability, precise 100-Hz readout, and eight memory channels per band. Plus, you get a choice of three main-dial tuning rates and RIT with 10-Hz tuning resolution.

Other features include selectable IF-band-width for monitoring SSB or CW, a 20-dB front-end attenuator for overload protection, and a switched backlight for the LCD display. There’s also plenty of receiver overlap for monitoring international short wave broadcasting.

MFJ-9200 runs on any power source between 8 and 15 VDC and draws a miserly 40 mA on receive with the display backlight turned off — perfect for prolonged off-the-grid adventures. Best of all, the QR-Pocket Radio is the smallest and lightest backpack transceiver currently available.

MFJ also offers a wide range of QRP accessories to compliment the MFJ-9200 QRPocket CW TransceiverTM. For example, the MFJ-561 Miniature Iambic Paddle is a perfect companion when you’re traveling light. 

Also, consider picking up a pair of MFJ-392B light-weight stereo headphones for cushioned comfort and clear sound during those long QRP contest sessions.

For off-road adventure, check out MFJ’s line of Walkabout portable antennas that plug directly into the QRPocket CW Transceiver’s BNC connector. MFJ-1899T, (see left) features 80 through 6 Meter coverage with a “wander-lead” tapped loading coil and collapsible 52-inch whip. Requires MFJ-7703, BNC to BNC elbow connector.

For mono-band coverage, consider the collapsible MFJ-1880T, MFJ-1840T, MFJ-1830T, MFJ-1817T, or MFJ-1815T.

For random wire antennas, try the popular MFJ-902 miniature travel tuner.

Finally, when operating at home with your feet up, plug in the MFJ-4103 miniature switching power supply.

The MFJ-9200 QRPocket CW Transceiver comes complete with one band module of your choosing, and modules for the other bands.

Transceiver operation is intuitive, easy-to-master, and clearly explained in an easy-to-understand manual written by popular author and QRP Hall of Fame member Rick Littlefield, K1BQT.

We all know working rare DX is exciting, but being rare DX is a truly indescribable!

Given the MFJ-9200 QRPocket CW Transceiver’s diminutive size, features, wide coverage, and solid output, all of the ingredients are here to turn your next vacation or business trip into a expedition to remember!

Specifications:

Frequency Control: DDS, 60-MHz reference frequency Tuning Step: 100-Hz, 1-kHz, and 100-kHz RIT Step: 10-Hz VFO Memories: 8 per band VFO Display: LCD, 802-pixel, switched backlight VFO Display Frequency Resolution: 100-Hz, 10-Hz with RIT activated Operating Modes: Transmit – A1 (CW), Receive – A1, A3J (LSB or USB) CW Offset: ~700 Hz T/R Switching: Full QSK Frequency Coverage, MHz: Band:

80-M Receive: 3.2-4.9 Transmit: 3.5-4.0

40-M Receive: 5.9-7.5 Transmit: 7.0-7.3

30-M Receive: 9.4-12.1 Transmit: 10.1-10.15

20-M Receive: 13.5-15.8 Transmit: 14.0-14.35

17-M Receive: 17.4-19.1 Transmit: 18.068-18.168

15-M Receive: 18.5-22.0 Transmit: 21.0-21.45

Receiver MDS: 0.1-uV, all bands AGC Threshold: 3 to 5-uV, all bands Bandwidth: Selectable, 600-Hz CW, 2.5-Hz SSB Audio Output: 100-mW, 8-Ohm load, stereo plug Receiver Current Drain: ~40-mA no backlight, ~80 mA with backlight Transmitter Keying: Iambic automatic, straight-key sensing, CQ memory Speed Range: 3-45 WPM Transmitter Power: 5-W or better, all bands, at 12.6 Volts Harmonic and spur suppression: -50 dB or better, all operating voltages Typical Transmit Current: 0.9-A at 10-V, 1.2-A at 14-V Supply Voltage: 8-15 VDC at 1.5A Dimensions: 4.8″x3.15″x1.34″, 120x80x34-mm Weight: 7.4 oz, 200 gm

Price: $249

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TEN-TEC 2 Band CW QRP Transceiver Model – R4020

• Category: ham, new equipment |

Photo by Ten-Tec

Covers 40 meters and 20 meter amateur bands.
Receives SSB & CW. Transmits CW

Features:

• Bright easy to read LCD display informs you of frequency, mode, supply voltage, S meter, RIT and more
• BNC RF connector
• Sensitivity (typical) .8 micro volts. MDS .2 micro volts
• Transmitter power, 5 watts (typical)
• Powerful DDS electronic synthesizers allow 5-16 MHz general coverage receive.
• Convenient 20 frequency memory storage
• Includes internal battery holders for alkaline batteries. An external (optional) 12 to 14 VDC regulated power supply may also be used.
• Easily adjustable tuning steps for both Amateur bands and general short wave listening.
• Low current consumption: About 55 mA on receive or about 550-950 mA on transmit depending on supply voltage
• Built in adjustable keyer with automatic CQ and call sign insertion for memory keying.
• Use with straight key or your favorite key paddle.
• Built in crystal filters for 2.2-1.6 kHz SSB or 900-400 Hz in CW
• 8 ohm headphone output (requires stereo plug). No internal speaker.
• RIT (receive incremental tuning) allows for 10Hz or 100 Hz tuning
• Power Plug- 2.1mm ID x 5.5mm OD with center positive. The Radio Shack part number for an equivalent is 274-1567. They come in a two pack for $3.29.
• Battery holders for eight “AA” batteries are packaged inside the transceiver. The transceiver can be powered by internal batteries (customer provided) or external DC power.
• Size: 5.7” X 3.7” X 1.4” (not including knobs)
• Weight: 15.8 oz (not including batteries)

Price: $249

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ELECRAFT KX3: Ultra-compact K3/KX1 hybrid

• Category: ham, new equipment |

Just received from Twitter

KX3: Ultra-compact K3/KX1 hybrid, 160-6 m, 10/100 W, all-mode, 32-bit DSP/SDR, 1.5 lbs.

Ultraportable:

1.5 lbs
1.7″ x 3.5″ x 7.4″
KX1 form-factor
internal battery pack & charger
internal wide-range ATU
new adjustable, attached keyer paddle

…and a K3-like front panel, including the same LCD.

RX-mode current drain ~150 mA. Very efficient on TX, with dual-output-impedance 5W/10W PA.

The optional 100W amp is in an external chassis. The internal amplifier is 10W with switchable impedance matching so it can also operate with maximum efficiency at 5W.

Totally different architecture than the K3, of course. (Wayne N6KR)

The MOSFET 10-W amp stage includes an output transformer with both 1:4 and 1:1 windings. When using low power, or when running from internal batteries, the 1:1 winding is used, which optimizes efficiency at about 5 W, greatly reducing transmit current drain. The 1:4 winding is used when running higher power (using an external supply).

Wayne N6KR

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TJ6A PRO 6 BAND QRP SSB CW TRANSCEIVER

• Category: ham, new equipment |

Information sheet and a 23 page construction guide

YahooGroups: http://groups.yahoo.com/group/TJ6A_QRP/
The purpose of this group is to foster an exchange of information and ideas related to the building, modification, and use of the TJ6A SSB/CW QRP Transceiver from YouKits. It is NOT meant to replace the user forum on www.YouKits.com website but to supplement that forum. Please use the YouKits site and email addresses located there to contact authorized support for the TJ6A radio.

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New QRP Kit “Mosquita-3″

• Category: ham, new equipment |

Mosquita is a typical “Made in Old Europe” Kit-Design.

What does this mean?

1. European HAMs know it, US HAMs may have heard about it: Short wave in Europe is a strange thing. Hundreds of high power BC stations cause extrem high signal levels even at smaller antennas in Europe. At winter evenings it is quite normal that a Receiver must handle up to 300mV and more. That´s the reason that typical European Receivers are using a selectiv frontend.

2. “Made in Europe” means: Technical better solutions determine the design. We prefer less compromizes even if this makes it more difficult to sell the kits because it gets a little more expensive uneasier to build the kit.
E.G. Mosquita is offering a full 5 Watt PA using an oversized 2SC1969 transistor. This helps during portable operation where very often the antennas are not so well matched. Mosquita is probably the smallest kit offering a fully functionally AGC with > 90dB dynamic. To get this, we had to use some extra parts on the small footprint – this makes it more complicated to assemble the kit, but we are sure, a real HAM who wants to get the best rig for portable use will be able to handle it.

What do you get if have built Miss Mosquita?

* A fully equipped 40 m CW Transceiver ( DDS Versions of Mosquita will be available for 80m 40, 30, 20m starting June 2006 )
* single conversion superhet with a 6 pole Cohn filter
* filter bandwith of some 500 Hz (40 m version)
* VFO tunable over the entire CW segment
* Sensitivity about 0.4 µV (By design reduced because the < 0,1 uV of the prototypes is ways to much due to Antenna noise at 40m of abt 0,8 uV
* AGC on the IF, more than 90 dB of dynamic range
* Adjustable transmitter output of up to 5 W on 40 meters
* Efficiency of PA of more than 70%
* Soft keying of the transmitter
* Monitor side tone facility
* Working voltage of 10-14 Volts
* Working current, RX 30 mA, TX+RX some 380 mA. Pout= 2W at E=12.5 Volts.
* Optional RIT

Starting in April 2006 Mosquita got a new, more functionally enclosure. It´s made from a very stable 100mm x 100mm x 25mm Aluminia Profile and offers space for usable optional Addons like the Universal RIT, a PK4 keyer, the Micro SWR Meter, a PLL CW Indicator and even a Digital readout.
The Basic Mosquita now contains: Double sided PCB, all parts, enclosure, 10 turn pot with mechanical Readout, all Jacks.

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New Antenna project for poor HAM

• Category: ham |

The question is what kind of HF Antenna I can build with this kit?

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PIC-EL (QRP Kit)

• Category: ham |

The AmQRP “PIC-EL Kit” is a multi-function PIC16F84A-based project board designed by Craig Johnson, AA0ZZ and the American QRP Club for experiments being conducted by John McDonough, WB8RCR in his online PIC Elmer 160 course. The course material is geared around use of common I/O components — pushbuttons, LEDs, LCD display, rotary encoder and speaker — and experiments are designed to take the student through a step-by-step creation of software programs that beep, display and otherwise interact with the user. Read More

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The QRO’s never enough

• Category: ham, new equipment |

Electronic Products Design, Inc have the capability to design Single and Three Phase Units up to 250KVA and Manufacture Single and Three Phase Units up to 150KVA.

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