The elecraft kx3 and qrp antennas

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The Elecraft KX3 and QRP Antennas John VE3IPS

Transcript of The elecraft kx3 and qrp antennas

The Elecraft KX3 and QRP Antennas

JohnVE3IPS

Elecraft KX-3• 160-6 meters SSB/CW/DATA/AM/FM • 10 W PEP (100 W with KXPA100 amp)• RTC and Battery Charger Board• 1.5 pounds + Current drain @150 mA• Pin Diode switching• Roofing Filter Option• Optional attached keyer paddle• -135 dbM receive (Sherwood Tests)• One-click firmware upgrades via the web (with free PC software)• Center-tuning indicator for CW and data modes• 8 band equalizer tailors passband to your voice and microphone• Internal options include ATU, battery charger, 2-m module; built-in speaker• Advanced 32 bit DSP provides dual watch, NR, NB, auto-notch• Software-defined radio (SDR) architecture• Operates in data modes (PSK31/RTTY) w/ or w/o a PC; includes RX I/Q

soundcard outputs• 30 sec DVR up to 4 channels• Norcal & Elecraft: Wayne Burdick (N6KR), Eric Swartz (WA6HHQ)

Direct Conversion SDR Design

LO is the operating frequencyRoofing Filter limits audio to AF chainDSP manages filter Bandwidths

Superhet

Roofing Filter and DSP

Good, Bad and UglyGood:• SDR receiver with excellent receive• Software driven provides many controls and DSP features• Low current consumption• Awesome customer serviceBad:• Likes a tuned input so SWLing a bit harder• Form factor different than the Icom 703 or Yaesu Ft-817• Microphone connection week – 4 pin plug• Lots of cables in the harness• Internal AA batteries needs a optional charger board $60• Low speaker output – needs a separate amplifier or headphones• AM BW about 4.2 KhzUgly:• Expensive• Direct Purchase and Repair only

Lots of Features on Multi Use Buttons

Mods have begun

PX3 Panadapter and KP100 Amp

• Full-color waterfall and spectrum displays, with fast sweep and excellent sensitivity

• Simple plug-and-play operation—no PC, soundcard, software drivers or setup required

• CW RTTY and PSK Display

100w with ATU

4lb DX Package Go Kit

DTX1866 11.1v 5A

Think Tank Camera Strobe case

iSDR app and KX3 Controls- Griffin iMic , Apple Camera Connectivity

Kit, iPad 2 - Manual Tuning of Pass band

- Pignology by Nick N3WG- Hamlog App and Piglet

- KX3mate and KX3 Companion - Android

Buddipole and BuddistickBudd W3FF has a HBP and CBP version. Get the Book

SuperAntenna MP-16 feet long and radial sensitive. Slider tune

Vest Pocket size

Radio mount

KA5DVS PAC-12 Antenna

8 feet long

Other Antenna Ideas

Other Antenna Ideas

Earchi end fed 40-6m 30’WA3WSJ

Crappie Doublet NJQRP

QHB Vest Pocket Vertical

Thanks

Get out in the field and operate