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QRP Show & Tell. A Report on QRP kits and QRP Projects Low-Power Ham Radio – Less than 5 watts. Jim Larsen, AL7FS 907-345-3190 [email protected] Alaska Ver 1.0 5/6/05 By Jim Larsen, AL7FS (add’l credit: N2APB “Why QRP?”) . Overview of QRP Stuff. What is QRP and Why Use it?

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qrp show tell

QRP Show & Tell

A Report on QRP kits and QRP Projects

Low-Power Ham Radio – Less than 5 watts

Jim Larsen, AL7FS

907-345-3190

[email protected]

Alaska Ver 1.0 5/6/05

By Jim Larsen, AL7FS

(add’l credit: N2APB “Why QRP?”)

overview of qrp stuff
Overview of QRP Stuff
  • What is QRP and Why Use it?
  • Overview of QRP Kits – a sampler
    • Small projects
    • Intermediate kits
    • Advanced kits
  • Manhattan Construction
  • Commercial Radios on QRP
  • More Fun Stuff
  • QRP Magazines and Clubs
  • How to read more on QRP
what is qrp
What is “QRP?”
  • A telegraphy Q-signal
    • “QRP” = To lower ones power
    • “QRP?” = Can you lower your power?
  • Five watts RF output power (or less!)
    • Use a “QRP” rig, or
    • Turn down your present radio

Only 5 watts?You must bekidding...

pretty amazing stuff
Pretty Amazing Stuff

AL7FS – Jim Larsen – Anchorage

Worked All States - 67.548 watts total

& In Year 2000 – 1.5M Miles per Watt

why qrp many reasons but let s focus today on
Why QRP?Many Reasons but let’s focus today on:
  • Quality and simplicity of equipment
  • Joys of homebrewing & kit-building

???

qrp optimization
QRP Optimization
  • 1) Size & weight increase with maximum output power
  • 2) Minimize current draw
    • No lamps (except LEDs)
    • No digital display unless LCD
    • Maximize TX efficiency
  • 3) Use few components & pack the board tightly
  • 4) Use ICs if possible
  • 5) Sensitive RX - If you can’t hear ‘em, you can’t work ‘em
size and weight vs max power
Size and Weight vs. Max. Power
  • Conventional Icom 735, etc. 12 lbs.
  • 100w Tuner 6 lbs.
  • setup Astron RS-20 25 lbs.
  • TOTAL 43 lbs.
  • TRANSPORT Trunk of Car
  • QRP setup QRP rig 2 lbs.
  • 5w Tuner 2 lbs.
  • setup Power supply/battery 3 lbs.
  • TOTAL 7 lbs.
  • TRANSPORT Small Briefcase
power requirements for a day
Power Requirements for a Day
  • To run for 24 hours - 10% xmit, 90% receive:
  • Conventional, compact HF rig (IC-706, Yaesu FT-890)
  • Receive - 2 amps…Xmit - 4 to 20 amps (avg. 10 amps)
  • TOTAL CONSUMPTION - 67.2 A-H (a car battery)
  • QRP- optimized rig
  • Receive - 100 milliamps…Xmit - 500 milliamps
  • TOTAL CONSUMPTION - 3.36 A-H (a 3-lb. gel cell)
kitbuilding homebrewing
Kitbuilding & Homebrewing
  • QRPers are natural builders and experimenters
  • Thousands of schematics are available
  • Hundreds of kits and projects are
  • available today
slide10

Showing off homebrewing projects

  • George N2APB • Jim AL7FS • Brian KF2HC
  • Antenna Analyzer - DDS VFO - MicroBeacon
overview of qrp stuff1
Overview of QRP Stuff
  • What is QRP and Why Use it?
  • Overview of QRP Kits – a sampler
    • Small projects
    • Intermediate kits
    • Advanced kits
  • Manhattan Construction
  • Commercial Radios on QRP
  • More Fun Stuff
  • QRP Magazines and Clubs
  • How to read more on QRP
slide12

The “Tuna Tin 2”

AL7FS to W1AW – 20 meters

  • Simple Transmitter, less than 1W
  • W1FB original design
slide13

“Herring Aid” Receiver

  • Simple Receiver project
  • Mate to Tuna Tin 2 transmitter
slide14

The “Pixie”

Bruce Hopkins - KL7H built his for 3.920 and 3.933. Checkins were successful with net control on both Motley and Snipers Nets

  • Simple 250mW transceiver kit from HSC Electronics
slide15

The NorCal “38 Special”

  • 30m superhet CW kit from NorCal Club
  • 2W output, wide VXO
  • Very popular as instructional kit
  • Kit no longer available but full doc online
slide16

N2APB’s “38 Special”

  • Custom cabinetry in LMB enclosure
slide17

The N0SS HF Noise Source

  • Noise Source Kit
  • Easy to build w/o kit
  • Spectrogram software
  • Easy readout – filters
  • This is 150 Hz BW on K2
slide18

A Simple and Inexpensive Morse Frequency Display

  • Small Wonder Labs’ “Freq Mite”
  • PIC microcontroller as digital frequency meter
overview of qrp stuff2
Overview of QRP Stuff
  • What is QRP and Why Use it?
  • Overview of QRP Kits – a sampler
    • Small projects
    • Intermediate kits
    • Advanced kits
  • Manhattan Construction
  • Commercial Radios on QRP
  • More Fun Stuff
  • QRP Magazines and Clubs
  • How to read more on QRP
slide20

Small Wonder Labs’ “SW40+”

  • Built by AL7FS
  • 40m 2W CW transceiver
  • Improved, simplified
  • RIT add-on now avail.
  • Educational Project

AL7FS

Elmer 101http://www.qsl.net/kf4trd/faq.html

slide21

The NorCal 40A

  • 40m 2W CW transceiver
  • Grandfather deluxe
slide22

The NorCal 20

  • 20m superhet CW
  • Great front end
  • Norcal kit for
  • 3rd world countries
  • Red Hot Radio
slide23

The “Sierra”

by Wilderness Radio

  • All band CW transceiver
  • Superhet, VFO
  • Dig display & key options
  • Removable band modules
  • Rivals quality of rigs 5x $
  • ARRL Hndbk cover ‘96
slide24

Small Wonder Labs’

“White Mountain 20m SSB”

  • 20m 2W QRP SSB transceiver
  • Solid design
  • Easy construction
  • No longer available
slide25

OHR – Oak Hills Research

  • Single band superhet CW rig
  • + improved
slide26

OHR – Oak Hills Research

  • 5 band superhet CW rig
  • 5 band + improved
some commercial qrp kits
Some Commercial QRP Kits
  • Ten-Tec Model 13xx (single band)
  • Oak Hills Research 100A (single-band)
  • MFJ 90xx (CW), 94xx (SSB) (single-band, not kits!)
  • S&S Engineering TAC I, ARK-series (single-band)
  • NN1G Small Wonder Labs SW40+
  • W6EMT Emtech (single-band)
  • Kanga UK/US
  • Wilderness Sierra, Cascade, SST, and NorCal 40A
  • And many, many, many more…
overview of qrp stuff3
Overview of QRP Stuff
  • What is QRP and Why Use it?
  • Overview of QRP Kits – a sampler
    • Small projects
    • Intermediate kits
    • Advanced kits
  • Manhattan Construction
  • Commercial Radios on QRP
  • More Fun Stuff
  • QRP Magazines and Clubs
  • How to read more on QRP
slide29

Elecraft K1 transceiver

A compact, high-performance CW rig that you can build.

five watts is all you need to work worldwide DX

four bands into the affordable, easy-to-build K1-4 transceiver

  • http://www.elecraft.com
slide31

Elecraft K2 transceiver

  • The K2 is a full-featured HF transceiver
  • Build the K2 for QRP or 100W Operation
  • Can challenge even the Yaesu FT1000 Mark V on Rx
  • And you build it yourself…just like the old Heathkits
  • http://www.elecraft.com
elecraft kx1 portable
Elecraft KX1 Portable
  • ultra-light, multi-band CW station with internal battery and automatic antenna tuner, full 20 and 40 meter ham bands, with 30 meters optional.
overview of qrp stuff4
Overview of QRP Stuff
  • What is QRP and Why Use it?
  • Overview of QRP Kits – a sampler
    • Small projects
    • Intermediate kits
    • Advanced kits
  • Manhattan Construction
  • Commercial Radios on QRP
  • More Fun Stuff
  • QRP Magazines and Clubs
  • How to read more on QRP
overview of qrp stuff5
Overview of QRP Stuff
  • What is QRP and Why Use it?
  • Overview of QRP Kits
    • Small projects
    • Intermediate kits
    • Advanced kits
  • Manhattan Construction
  • Commercial Radios on QRP
  • More Fun Stuff
  • QRP Magazines and Clubs
  • How to read more on QRP
commercial qrp radios
Commercial QRP Radios
  • Turn back the power on your big rig
  • Turn back the power on your semi big rig
  • Buy a QRP radio
use 100 watt rig as qrp equipment
Use 100 watt Rig as QRP Equipment

Kenwood TS-450S fully adjustable – zero to 100 watts

other qrp equipment
Other QRP Equipment
  • Direct Conversion Radios
    • Heath HW-7, HW-8 Ten-Tec Century 21, 22
  • Superheterodyne Radios
    • Heath HW-9;
    • Ten-Tec Argonaut 505, 509, 515, Argo 556, Argonaut II
    • A&A Engineering K9AY 20, 30, 40m
    • Index Labs - QRP+, QRP++
    • Yaesu FT-301S, Kenwood TS-130V, Icom 731
slide45

Index Labs’ “QRP Plus”

  • Super stable QRP rig
  • Great user interface
slide46

Argonaut 515

  • QRP for CW and SSB
slide47

Heathkit HW-8

  • 4 band direct conversion CW QRP rig
overview of qrp stuff6
Overview of QRP Stuff
  • What is QRP and Why Use it?
  • Overview of QRP Kits – a sampler
    • Small projects
    • Intermediate kits
    • Advanced kits
  • Manhattan Construction
  • Commercial Radios on QRP
  • More Fun Stuff
  • QRP Magazines and Clubs
  • How to read more on QRP
club projects
Club Projects
  • Northern California (NorCal) QRP Club
    • Sierra, Cascade, NC40a, 40-9er, 38 Special, SST, NC20a, SMD BC Receiver
  • NJ QRP Club
    • Rainbow Tuner, Fireball 40, MicroBeacon, SOP Receiver, PSK31 Audio Beacon
  • Columbus QRP Club
    • MRX-40 ultra-compact receiver
  • St. Louis QRP Club
    • St. Louis Vertical

And much, much more.

slide50

Portable Paddles

  • N2APB enclosure for New Zealand ARC project
slide51

N2CX “Rainbow Tuner”

  • Kitted by the NJ-QRP club
  • Resistive (absorptive) SWR bridge w/LED indicators
  • Built-in tuner suited for half-wave end-fed antennas
slide52

N2APB’s “Rainbow Tuner”

  • Custom enclosure with panel mounted
  • switch for tuner inductor settings
slide53

The N2APB Field Stack

  • Batteries
  • Rainbow Tuner
  • 38S Xcvr
  • QRP paddles

This is what N2APB takes on biz trips (along with “Halfer”

half-wave end-fed wire for 30m). Easily fits in small briefcase!

slide54

Mini-Keys from Whiterook

  • Great for portable use!
slide55

The NorCal Paddles

  • First club project not being electronic-related
  • Unfinished kit … yields superior quality
slide56

Miniature QRP Paddles

  • Original design by WK8G
overview of qrp stuff7
Overview of QRP Stuff
  • What is QRP and Why Use it?
  • Overview of QRP Kits – a sampler
    • Small projects
    • Intermediate kits
    • Advanced kits
  • Manhattan Construction
  • Commercial Radios on QRP
  • More Fun Stuff
  • QRP Magazines and Clubs
  • How to read more on QRP
slide58

Alaska QRP Club

  • No officers, no directors, no constitution & No dues.
  • Meets the Third Friday of every month - 7:00 PM (Some show for dinner at 6PM)
  • Meet at Dennys (in the back room) on DeBarr near Bragaw.
  • Contact is Jim Larsen, AL7FS, 345-3190. [email protected]
  • http://www.qsl.net/kl7aqc/
slide59

American QRP Club

  • AmQRP carries “journal-quality” articles,
  • project descriptions, event coverage, etc.
  • http://www.amqrp.org/
slide60

QRP

Publications

  • The mainstay of QRPer information
    • Homebrewer from AmQRP
    • QRP Quarterly from ARCI
    • SPRAT from G-QRP
slide61

QRP Amateur Radio Club International

  • QRP ARCI is superset of all QRP clubs
  • http://www.qrparci.org
slide63

The NorCal home page

  • Northern California QRP Club
  • http://www.norcalqrp.com/
slide64

G-QRP Club – Great Britain

  • http://www.gqrp.com/
support groups for addicts
Support Groups for Addicts
  • QRP Amateur Radio Club International (ARCI)
  • http://www.qrparci.org/
  • Internet QRP Club (QRP-L mailing list)
  • http://qrp.lehigh.edu/lists/qrp-l
  • NJ QRP - http://www.njqrp.org
  • NorCal - http://www.norcalqrp.com.
  • Adventure Radio Society, Knightlites (NC)
  • Maryland Milliwatts, NW QRP
  • Alaska QRP - http://www.qsl.net/KL7AQC
qrp kits still available
QRP Kits-Still Available

And Kits from lots of Vendors

http://www.amqrp.org/misc/links.html

kd1jv at sprint 3
KD1JV – AT Sprint 3
  • QRP Kit-still available – about $160
  • 80-40-30-20 meter CW at up to 5 watts
norcal keyer
NorCal Keyer
  • QRP Kit - still available – $16.50
  • Memory keyer, with 3 programmable 40-character memories, iambic A & B mode, straight key and bug mode, 2 beacon modes, and variable speed control by either a 100K pot or the paddles themselves.
you might ask why qrp
You might ask, “Why QRP?”
  • It’s FUN!
  • That about says it all.

!!!

qrp references literature
QRP References: Literature
  • QRP Power, published by the ARRL
  • QRP Classics, published by the ARRL
  • W1FB’s QRP Notebook, published by the ARRL
  • The History of QRP, by Adrian Weiss, W0RSP, ISBN 0-9614139-1-3
  • The Joy of QRP, by Adrian Weiss, W0RSP, ISBN 0-9614139-0-5
  • … and many, many more!
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