PO Box 296 • TRACYTON, WA 98393-0296 • (360) 692-7750
HOME
NW80/40/30/20
ZM-2 TUNER
LADDER GRABBER
COAX GRABBER
ORDER
GALLERY
 
EMAIL
 
NW Series Monoband CW Transceiver
80, 40, 30, 20 meters - OUT OF STOCK

The NW8020 is a state-of-the-art monoband QRP transceiver designed to bring Fun, Skill and Pride back into Ham Radio.

Fun, because you find that here is a small rig that offers features of a "Big" rig, but is much easier to operate!

Skill, because QRP contacts are not as easy to make as with the "Big" rig. You develop operating skills that will set you apart from the QRO crowd!

Pride, because you're making contacts, even DX, with a rig that you built yourself!

There are many other things about the NW Series and QRP that will enhance your Ham Radio experience. Take it camping; you can operate it from a gel cell.

Since you built it, you will have a better understanding of how it operates. You will meet other QRP'ers and discover a group of people who are different than many other Hams you may have met.

SuperHetrodyne
The NW Series has a superhet single signal receiver, with a variable bandwidth crystal filter. A two-pole active audio filter (from the ARRL handbook) is available as an option. The kit is assembled in steps, and each step is tested before the next step is started. In this way, you can be sure the finished radio is going to work. The silkscreened and solder-masked printed circuit board makes assembly easy.


Click to enlarge


Strong Audio
The audio will drive a 5" speaker, just like the "Big" rigs. The transmitter puts out four to five watts, and is adjustable down to the MW range.

Solid State Keying
The keying and muting is very smooth, and features solid-state antenna switching, so there is no clicking antenna relay. This is true QSK; you can hear interfering or breaking signals between letters. The sidetone is from the transmitted signal, and the level is internally adjustable to suit your ears. It can be adjusted so that your transmitted signal sounds just like the receive signal. This makes for comfortable, smooth, non-fatiguing, fun operation.

What is incuded in the "FULL" kit
A cabinet featuring painted and silkscreened front and rear panels is included. All hardware and knobs are included. Also included in the full kit is the AF-1 audio filter. The AF-l has optional resistors to set the gain and center freq where you want it. The AF-1 does a great job both of reducing background noise bringing weak signals up out of the noise.

NW - Reviews
NW20 QST December 2000 review by Bob Kellogg, AE4IC

Model NW30 -- HAMBREW Magazine, Autumn 1996 Issue. Article by Marshall Emm, AA0XI / VK5FN.

"HAMBREW" magazine (Summer 1995 issue) published an article which covered adding a Digital Readout to the NW8020, and also showed the unit in a Ten-Tec enclosure.

Building The Kit
MINIMUM TEST EQUIPMENT REQUIRED:
Calibrated General Coverage Receiver (or Transceiver) or Frequency Counter.
Volt-Ohmmeter.
50-ohm Dummy Load.
12 Volt Power Source rated at 1.5 Amps Minimum.
Building time is from 10-30 hours depending on skill/experience.

NW Series Specifications and Lab Test Results
Model tested: NW40, 40M QRP Transceiver
  Unit tested was built by Roy Gregson, W6EMT
Tuning ranges for the models are listed below:
**80 Meters - 3.500 to 3.750 MHz; IF freq is 9.6 MHz; VFO tunes 6.100 to 5.850 MHz
**40 Meters - 7.000 to 7.200 MHz; IF freq is 12.0 MHz; VFO tunes 5.000 to 4.800 MHz
  30 Meters - 10.100 to 10.135 MHz; IF freq is 12.0 MHz; VFO tunes 1.900 to 1.865 MHz
  20 Meters - 14.000 to 14.090 MHz; IF freq is 9.600 MHz; VFO tunes 4.470 to 4.400 MHz ** Note novice band coverage
Physical Size/Weight:
Height 2.75 in. (7cm)
Width 6.625 in. (15cm)
Depth 6.75 in. (14cm)
Weight ~1lb. 4oz. (574 grams)
Lab Tests were performed by Paul Harden, NA5N using HP 1590 and/or Colby SG1000A signal generator; Tektronix 475 or TDS520 (plotting) oscilloscope; Tektronix 7L13 or Tek 2712 (plotting) spectrum analyzer; HP435A Power Meter; HP 5342A frequency counter; Wavetek DM27XT DVM.
DC Power Requirements:
Input VDC-------------------->
11V
12V
13.5V
Low Batt Normal Full Charge
Receive Current (no volume):
48mA
52mA
58mA
Transmit Current:
.92A
1.09A
1.32A
Total TX/RX Current Draw (keydown):
.97A
1.14A
1.38A
Output Power:
3.7W
4.8W
6.2W
XMTR Efficiency:
37%
37%
35%
Receiver Section:
 
Minimum
Maximum
Test
RF Tuning Range:
6.999MHz
7.201MHz
7.040MHz
VFO Frequency:
5.000MHz
4.798MHz
4.959MHz
IF Frequency:
11.999MHz
11.999MHz
11.999MHz
Minimum Detectable Signal (MDS):
-118 to -130 dBm (.07uV)
(from wide to narrow on variable BW filter)
VFO Drift from power on:
 
1 Min.
2 Min.
3 Min.
4 Min.
5 Min.
Measured Drift (Hz):
+380
+320
+90
-60
-10
VFO reaches 10Hz stability in 5 minutes after power on.
Type of VFO: Open-air variable capacitor, FET osc.
IF Filter:
4-pole crystal filter -- 6dB Bandwidth: 1.7KHz - 150Hz wide to narrow.
Transmitter Section:
TX Mixer output level:
-25dBm
Output Power: 6.2W
Driver output level:
+10dBm
2nd Harmonic: -35dB
Total driver gain:
36dB
3rd Harmonic: -46dB
PA stage gain:
25dB
   
Power amplifier type:
2SC1678
   










PO Box 296
Tracyton, WA 98393-0296

(360) 692-7750
Hours: (WEST COAST USA)
9:00 am - 6:00 pm (PST)

Eastern US call between 12:00 pm thru 9:00 pm YOUR time.

Midwestern US call between 11:00 am thru 8:00 pm YOUR time.

Mountain state call between 10:00 am thru 7:00 pm YOUR time.

Europe call between 18:00 thru 03:00 YOUR time.

UK call between 17:00 thru 02:00 YOUR time.

Japan call between 02:00 thru 11:00 YOUR time.

EMAIL



Previous phone number - not in service
HOMENW80/40/30/20ZM-2 TUNERLADDER GRABBERCOAX GRABBERORDERGALLERYFORUMEMAIL