Four States QRP Group

Four State
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QRP Resources

This is where we have our QRP resource pages for all QRP'ers to use and enjoy.


T41 Kit Information
Available Here


Long Island CW Club
Learn or Improve your Morse Code


Data Sheets

Technician Licensees → Why Not Try Low Power HF CW?
by Ron Stone, KA3J (on eHam.net)

Complete text in 'PDF' format.

Beginning Ham Radio Info → Resources for the new person
From Conner at Harrison Connunity Park

Broadcasting History
from Wyoming Attorney -- Thanks to Dylan for submitting

Wire Gauge and Current Limits Including Skin Depth and Strength

Simpler Hardware Methods for iCW with the Amazing Hi-Per-Mite Bandpass Filter.
Posted with permission, thanks Chuck Vaughn.

A Meditation On Winding Toroids
by K6JEB

Altoids Punching Tutorial
by Terry Fletcher - WAØITP

TEN-TEC Amateur Radio Equipment
TEN-TEC America's best and oldest manufacture of Commercial and Amateur radio equipment designed to provide the highest performance and greatest ease of use. Ten-Tec products set the standard for real world performance in the most rigorous and demanding applications.

Grounding and Reducing Noise In Your Radio Station
by Phil Anderson - WØXI

Spreadsheets for calculating capacitor and inductor values
for bands other than in a published design.

by Terry Fletcher - WAØITP

SS40 Rcvr. article from Spanish ham radio magazine Radio Afficionados
The author Jon Iza is a well known ham who has translated many ham radio related articles in to Spanish and some Spanish articles into English.

W1PNS / WAØITP / AB8XA Battery Life Estimator

Crystal Sets to SideBand
Frank Harris's (KØIYE) well known and acclaimed book.

A 20- & 30- or 20- & 39-Meter
Vertical Trap Antenna

by Phil Anderson - WØXI

WØXI's 100 Most Common Words, Q-sigs, Pro-signs,
and Abbreviations for CW Practice

by Phil Anderson - WØXI

"EZ Class E Design Spreadsheet"
by Terry Fletcher - WAØITP

SESE80 prototype
by Paul Daulton - K5WMS

Parts Scrounging
by KL7AH

Portable Ops Brochure
by K5EST

CW Interface
by WAØITP

PAØRDT MiniWhip Antenna
by WØMQY

Ozark 17 CW transceiver Kit
by WD5AGO

NorCal Christmas Power Meter
by WØMQY

M3 Electronix Semiconductor Analyzer
by K6QKL

4SQRP Computer Wallpaper
by the 4SQRP gang

4SQRP Member Home Page Links
by the 4SQRP gang

4SQRP Photo Album
by the 4SQRP gang

Cable Strain Relief
by KCØIFQ

Another Strain Relief
by WAØITP

How to Build a 10 Meter Beacon
>by N2UHC

80 Meter Pizza Pan Antenna
by K6QKL

Inductance Adapter
by K6QKL

So You Want to be a Builder, Huh?
by KI6DS

QRP Club Web Page Links
by WØCH

4SQRP Logo and Banner Download Page

 

Updated: July 21, 2025

 
 
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