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Amateur Radio Links & Notes by William Eric McFadden revision 02052012-1613 |
Table of Contents
Links to sites not related to amateur radio can be found in my Bookmarks.
Read my disclaimer.
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"You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat." -- Albert Einstein (1879 - 1955) |
QRP Contests (and other operating events) (return to top)
WA7BNM QRP Contest Calendar
Original QRP Contest Calendar at the E-PA QRP Club
(Logs and Dupe Sheets for QRP ARCI events are available here.)
QRP Field Events (return to top)
April 28, 2012: QRP to the Field (traditionally the 4th Saturday in April; rules); theme: WPA/CCC/State Park
June 23-24, 2012: ARRL Field Day (always the 4th full weekend in June; rules)
July 29, 2012: ARS Flight of the Bumblebees (always the last Sunday in July; rules)
September 15, 2012: QRP Afield (always the third Saturday in September; rules)
(Logs and Dupe Sheets for QRP ARCI events are available here.)
Hamfests & Symposia (return to top)
May 16, 2013: QRP ARCI Four Days in May QRP Symposium
May 17-19, 2013: Dayton Hamvention
Search for hamfests at ARRL
QRP Discussion Groups & Blogs (return to top)
HF Pack and Yahoo! Club (and sign in)
QRPer.com, a blog by Tom Witherspoon, K4SWL
The QRPer (no longer being updated) & Trail-Friendly Radio Extra, blogs by Richard Fisher, KI6SN
W2LJ's Blog -- QRP, Morse Code & Amateur Radio
KC8QVO, a blog by Steve Damico
Rooster & Peanut's GoatTube with Steve, WG0AT
Elecraft (return to top)
Reviews in QST at ARRL (Members Only)
The Elecraft Owner Online Database
N0SS's Amateur Radio Page, K2 Section
K2 Mods by W3FPR (new URL)
LA3ZA Unofficial Guide to Elecraft K2 Modifications
Improving the K2's CW Filter Ultimate Rejection by KO0B
Elecraft K2 & K1 Links by K8ZT
PSK31 and an Elecraft K2 Mod (PDF) by WB4QXE
by G4ILO
K2 Quick Reference Cards:
Rework Eliminator for K2, including Internal Mic Adapter
Heathkit (return to top)
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On Heathkit Manuals: In October, 2008, the intellectual property rights to Heathkit legacy products were purchased by Don Peterson of Data Professionals of Pleasanton and it appears Mr. Peterson has been very aggressive in stopping on-line manual downloads and sales. Downloadable Heathkit manuals are no longer available at BAMA (or at the mirror) or from other sources on the web. Data Professionals offers printed copies of some manuals but at this time none are available for any of the Amateur Radio products ever offered by Heathkit. |
1st HW-16 Yahoo! Group (& sign in)
2nd HW-16 Yahoo! Group (& sign in)
The Heathkit Shop by Mike Bryce, WB8VGE
RTO Electronics, specializing in the repair of Heathkit Amateur Radio equipment
Harbach Electronics--Heathkit, Drake, Collins, and Dentraon parts and upgrade kits
N0JMY's Hayseed Hamfest--Re-Cap kits
Technology Systems with photos of unbuilt kits and downloadable catalogs and manuals
The Heathkit Virtual Museum
Heathkit Message Board
Heathkit Information at Nostalgic Kits Central
Schematics for Heathkit equipment can be downloaded at Vintage Radio Information
The Benton Harbor Lunch-boxes: the Tener, Sixer, and Twoer
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HW-19, HW-29A, & HW-30 at the Heathkit Virtual Museum HW-30 "Two-er" at Richard Post's Boat Anchor Pix
FT-243 crystals are available from AF4K--$12 plus shipping |
Hotwater QRP: the HW-7, HW-8, and HW-9
ARRL Product Reviews on ARRL's Members Only site:
KK4KF's HW-7/8/9 Information Page
Michael Bryce's Repairing the HW-8 at The Heathkit Shop
WB6FZH's HW-8 Page & HW-8 Modifications, Repairs, & Recollections
K8YTOs Index of HW-7, 8, and 9 Modifications in Excel 97 spreadsheet format
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The Freq-Mite from Small Wonder Labs is ideal for incorporation within an HW-7 or HW-8. (See notes here about installing a Freq-Mite in the HW-8.) In HW-8 Handbook, First Edition (1994), Michael Bryce recommends replacing the MPF-105 front-end in the HW-8 with a 2N4416 for a significant increase in sensitivity. He notes, "The extra pin of the 2N4416 grounds the case, and it may be done with a small hole drilled into the PC board nearby the new unit, or the ground simple (sic) may be left 'floating' with no noticeable loss in performance." (This suggestion was not included in the Second Edition of the book.) The 2N4416 is available for $2.50 each at RF Parts. The 2N4416A is available at Mouser for $2.00 each. (Note: RF Parts has a $25 minimum order; Mouser has no minimum order.) |
Classic Heathkit Stations:
Heathkit Citizen-Band Walkie-Talkies:
The GW-31/31A "Hand-Held Transceiver" is a single-channel rig with superregenerative receiver and crystal-controlled 100mW (input) transmitter.
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WD8RIF has a pair of GW-21 transceivers and a GW-31 which he may move to ten meters.
GW-21/21A: The receive crystal is 455kc higher in frequency than the transmit crystal. The GW-21 & GW-31 were designed for the NEDA #1602 carbon-zinc battery which is 9 volts and 850mAh; see Energizer No. 246. Modern, smaller, 9v alkaline batteries have approx. 625mAh capacity; see Energizer 522; a pair in parallel would have 1250mAh capacity. |
Ten-Tec (return to top)
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ARRL Product Reviews:
The W8KC Virtual Ten-Tec Museum
Power Mite by VE3JC
Power Mite manual in .PDF format
The Odyssey of the Argonauts by Anthony Luscre
WB6FZH's Argonaut 505 portable station in a tube caddy
Argonaut 509 Schematics courtesy of Rob Frohne
| According to Paul Clinton, WD4EBR, Ten-Tec Service Manager (email), the dial string for the Argonaut 509 is $1.50 and the PTO kit is $25.00. Shipping is $6.00. |
The NorCal VE3DNL Marker Generator would work well as a crystal calibrator for the Argonaut 509.
The NorCal FCC-1 Frequency Counter looks ideal for an external digital display for an Argonaut 509.
From The Second Coming of the Argonaut, November, 1971, CQ:
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Argonaut 509 at RigPix Database Argonaut 515 at RigPix Database Argonaut II at RigPix Database Argonaut V at RigPix Database Omni D at RigPix Database Corsair II at RigPix Database Omni VI Plus at RigPix Database |
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On powering older Ten-Tec 100-watt transceivers with non-OEM power supplies:
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R.L. Drake (return to top)
K2TQN's Drake Novice Station, with 2NT transmitter and 2B + 2BQ receiver
WWII Command Sets (return to top)
The Command Set Story by Gordon Elliot White, from November, 1964 CQ (.pdf)
The Entire ARC-5 & B29 Radios at U.S. Military Aircraft Avionics from 1939 to 1945
The ARC-5 Pages at Glowbugs
AN/ARC-5 at Wikipedia
SCR-274-N by WA6IKJ
AN/ARC-5 Airborne Communications Systems
Command Sets at Ray Robinson's Communications Museum
Command Set Transmitter SCR-274-N at Kurrajon Radio Museum
ARC-5/BC-455 Modification Notes by Phil Salas, AD5X (.pdf)
N3FRQ's B-17 Aircraft ARC-5 Communication System
Photos of radios in B-17: here, here, & here
B-17 Radio Operator
B-17 Crew Requirements and Standard Operating Procedures, including Radio Operator
B-26 Radio Operator Compartment
Rich Post's ARC-5 Navy Receiver
K5MBX's WWII Military T-21/ARC-5 Transmitter
BC-696 schematic
KF6NUR's BC-224 and BC-348 Aircraft Radio Receivers
BC-348 at Wikipedia
The Irrepressible BC-348 Receiver by WA2CBZ
Rich Post's Signal Corps BC-348Q Receiver
BC-348 FAQ
AC7ZL's Restoring the BC-348-Q
BC-348 by James Moorer
BC-348 at Kurrajon Radio Museum
rec.radio.amateur.boatanchors FAQ
Manuals are available in the "military" section of Boat Anchor Manual Archive (BAMA) ( and mirror)
Transmitters:
Receivers:
"Resurrecting a Command Set Transmitter" by W8KGI appears in January, 2009 QST.
The ARC-5'er -- A Power Supply for the BC-453 and other Command Receivers (PDF) at jlandrigan.com
ARC-5 Manual (AN 16-30ARC5-2) (PDF) at HillTopArmyRadios.com
Complete 80-Meter CW Station Using Surplus Units (PDF) at ARRL (June, 1960)
Converting Surplus Transmitters for Novice Use (PDF) at ARRL
Two-Band Coverage with the BC-454 (PDF) at ARRL (January, 1960)
BC-348 Alignment (PDF) at ARRL (July, 1959)
"Bring That WWII Command Set Receiver Back to Life" by AD5X appears in January, 2009 QST.
Getting Your ARC-5 Transmitter Running Without Hacking it Up (PDF) at Glowbugs
Command Set Receivers for All Frequencies (PDF) at Glowbugs (CQ, January, 1967)
ARC-5 Receiver Mixer-Mod (PDF) at Glowbugs
The Command Set Roundup (PDF) at Glowbugs
AN/ARC-5 Military manual (PDF) at Glowbugs
Command Sets (PDF) at Glowbugs (CQ, 1957)
Guide to ARC Sets (PDF) at Glowbugs
AN/ARC-5 Alignment Procedure (AN 16-30ARC5-501) (PDF) at HillTopArmyRadios.com
Dave Stinston ARC5 Notes (PDF) at HilltopArmyRadios.com
Command Sets (CQ Magazine book) (PDF) at HilltopArmyRadios.com
Surplus Radio Conversion Manual Volume 1 (PDF) at HilltopArmyRadios.com
Surplus Radio Conversion Manual Volume 2 (PDF) at HilltopArmyRadios.com
Surplus Radio Conversion Manual Volume 3 (PDF) at HilltopArmyRadios.com
Vacation Special (PDF) at ARRL (May, 1967)
Single-Control Transmitter-Receiver (PDF) at ARRL (May, 1953)
Keying the BC-696 (PDF) at ARRL (July, 1951)
Operating the BC-696 in TV Fringe Areas (PDF) at ARRL (December, 1953)
Crystal Control for the BC-457 and HC-459 (PDF) at ARRL (November, 1959)
Better Keying for the Converted BC-457 (PDF) at ARRL (March, 1953)
100 Watts on 160 Meters, Using a BC-458 (PDF) at ARRL (October, 1972)
"All-Band" BC-458--A Heterodyne V.F.O. for S.S.B. (PDF) at ARRL (February, 1953)
Improved Keying for the BC-459 (PDF) at ARRL (June, 1963)
Using the BC-459 With the V.H.F. Overtone Oscillator (PDF) at ARRL (December, 1957)
Simple Heterodyne Exciter for 10 Meters (PDF) at ARRL (November, 1953)
ARC-5 Transmitter Modifications: 14-Mc Output from the BC-459-A (PDF) at ARRL (June, 1948)
ARC-5 Transmitter Modifications: 14-Mc Output from the BC-459-A (PDF) at ARRL (June, 1948)
ARC-5 Transmitter Modifications: Eliminating Ripple in the BC-459-A (PDF) at ARRL (June, 1948)
ARC-5 Transmitter Modifications: NFM Added to the BC-459-A (PDF) at ARRL (June, 1948)
ARC-5 Transmitter Modifications: Improved Keying (PDF) at ARRL (June, 1948)
ARC-5 Transmitter Modifications: Making Use of the Tuning Eye (PDF) at ARRL (June, 1948)
Crystal Adapter for ARC-5 Transmitters (PDF) at ARRL (December, 1952)
TVI-Proofing the ARC-5 VHF Transmitter (PDF) at ARRL (November 1950)
Deluxing the ARC-5 Transmitter (PDF) at ARRL (September, 1960)
Putting the ARC-5/T18 on 160 and 80 Meters (PDF) at ARRL (February, 1963)
Getting Started with the BC-454 (PDF) at ARRL (January, 1959)
80 Through 6 with the BC-454 (PDF) at ARRL (May, 1959)
Command Set Receiver for 6 and 10 (PDF) at ARRL (September, 1953)
ARC-5 and 274N (PDF) at ARRL (April, 1959)
ARC-5 Triple Superhet (PDF) at ARRL (August, 1959)
Super-Simple 80-20 Receiver (PDF) at ARRL (April, 1972)
New Life for the Q5-er (PDF) at ARRL (February, 1951)
BC-453 "Q5-er" reception (PDF) at ARRL (August, 1950)
Bandspreading the BC-455 (PDF) at ARRL (April, 1959)
Note on Surplus Type BC-348 Receivers (PDF) at ARRL (September, 1957)
Double Conversion Using the BC-348 (PDF) at ARRL (June, 1954)
Modifying Tuning Range of the BC-348 (PDF) at ARRL (January, 1952)
Curing Backlash in BC-348 Receivers (PDF) at ARRL (January, 1951)
Eliminating Back-Lash in BC-348 Receivers (PDF) at ARRL (February, 1948)
Broadcast-Band Coverage with the BC-348-Q (PDF) at ARRL (September, 1949)
"Q5-er" for BC-348 Owners, by Adding Series Padders (PDF) at ARRL (June, 1948)
"Q5-er" for BC-348 Owners, Building a Simple Converter (PDF) at ARRL (June, 1948)
"Q5-er" for BC-348 Owners, Modifying the Calls (PDF) at ARRL (June, 1948)
"Q5-er" for BC-348 Owners, Converting with an External Oscillator (PDF) at ARRL (June, 1948)
Converting the BC-348-Q (PDF) at ARRL (January, 1947)
Servicing Xtal Filters in the BC-348 (PDF) at ARRL (August, 1947)
More on the BC-348-Series Receivers: Modifying the BC-348-O (PDF) at ARRL (November, 1947)
More on the BC-348-Series Receivers: Calibrating the BC-348 (PDF) at ARRL (November, 1947)
More on the BC-348-Series Receivers: Curing Noise-Limiter Troubles (PDF) at ARRL (November, 1947)
More on the BC-348-Series Receivers: A Further Note on the BC-348-Q (PDF) at ARRL (November, 1947)
CW and Keys (return to top)
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Basic CW Operating Procedures
The Art and Skill of Radio-Telegraphy by William G. Pierpont, N0HFF
TASRT: Amateur Society for Radio Telegraphy with The Art & Skill of Radio-Telegraphy course (new URL)
K7QO Code Course
LB3KB's Just Learn Morse Code
W1AW Morse Code Practice Files & archive, sorted by code speed
How to use an "English Key" by WB8DQT
Adjust a straight key to avoid "glass arm"
The Vibroplex Collector's Page
Vibroplex -- The Company and its Classic Key by John Ceccherelli, N2XE (PDF, ARRL Members Only)
Vibroplex Original at Vibroplex (and parts list, machine drawing, & adjustments)
Vibroplex Vibrokeyer at Vibroplex (and parts list, machine drawing, & adjustments)
How to Adjust a Semiautomatic Key at N6TT
Slow a speeding bug with a BugNapper by WB9LPU: 1 | 2
J.H. Bunnell & Co. with available NOS Navy Flame Proof Key
RadioTelegraphy.net
W1TP Telegraph Museum
The Sparks Telegraph Key Review
Stewart Johnson, Les Logan, EF Johnson, & Wm. M. Nye keys by N0UF
Radio Telegraphy -- Straight Keys to Bugs at Western Historic Museum
The KK4DW Telegraph Key Collection
History of keys called "Speed-X":
When did the model 310 straight key appear?
According to Western Historic Radio Museum both the models 322 (rectangular base) and 310 were available from Les Logan from 1937 to 1947.
Morse Express says the model 322 has been available since 1937 and was manufactured by Les Logan, E.F. Johnson, and Wm. M. Nye.
Tom French (Artifax Books) thinks my older Speed-X is an early Wm. M. Nye piece; Logan and Johnson number-schemes were different.
N0UF identifies Speed-X HS15.682 keys as being products of the William M. Nye Company.
Military CW Keys:
Artifax Books sells old keys and replacement knobs for old keys
The book "Keys IV... and More--the Finale" by K4TWJ (SK) is available in PDF format as a free download here: K4TWJ
Amateur Satellite (return to top)
Work an FM VHF/UHF Satellite with an HT:
Amateur Satellite Articles at EB4DKA
Orbitron satellite tracking software
Winlink (return to top)
APRS (Automatic Packet Reporting System) and GPS (Global Positioning System) (return to top)
Google APRS Maps with zoom and scroll
APRS World APRS database and information
TinyTrak forum at Yahoo!Groups (and sign in)
Amateur Radio High Altitude Ballooning, with launch announcements
A Guide to the Global Positioning System (GPS) at Radio Shack
About GPS & GPS for Beginners at Garmin
GPSInformation.net by Joe Yeazel N4TEB, Jo Mehaffey W2JO, & Dale DePriest
APRS.org & direct URL by Bob Bruninga, WB4APR (& symbols table)
APRS & GPS at TAPR.org
Automatic Packet Reporting System (APRS) at ARRL
Automatic Packet Reporting System (APRS) at ARRL (QEX Sidebar)
Position Reporting with APRS at ARRL
UI-View32 APRS client for Windows (and registration)
Convert Lat/Long between various formats
grab topo maps at TopoZone.com
instructions on importing to GPS (and APRS software?) here: GPS and Adventure Radio by VE3JC
Review of Delorme EarthMate GPS Receiver by Joe Mehaffey (W2JO) & Jack Yeazel (N4TEB):
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Use the serial Earthmate for APRS by N9UUR using the GST-1 GPS Sentence Translator
Use a DeLorme Tripmate with a TinyTrak3 by KD5OM
limited serial Earthmate support can be found at Delorme
Bicycle-Mobile APRS
(See Bicycle Combined With Amateur Radio within this document for more on use of radio on bicycles.)
WD8RIF and the ACARA provide APRS support to the Athens (Ohio) Marathon
ACARA Marathon Communications Planning Page
a thread at BMHA about bicycle-mobile APRS
The Athens Marathon will be using chip-timing in 2009.
WD8RIF bicycle-mobile APRS configuration:
TinyTrak3 GPS Encoder for APRS by Byonics
Second APRS stations under consideration:
Aeronautical-Mobile APRS
HP iPAQ HX2415 Pocket PC:
PocketGEM, free mapping software for PocketPC and external GPS
PDA to GPS: Using a Handheld Computer as a Navigation Tool (Palm OS)
Cabling DeLorme Earthmate (serial) to PocketPC
Serial Adapter for HP iPAQ with power ($29.95) & without power ($19.95) at Gomadic
Syncable Solutions--serial cables for Palm OS PDAs
Serial (RS232) Interfaces for PDA at PC-Mobile
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In an email dated 2007-07-2 DeLorme confirmed that Street Atlas USA 2008 DVD works with PDAs with touch screen and running either Windows Mobile 5.0 or Palm OS. In an email dated 2007-04-04 DeLorme confirmed that Street Atlas USA 2007 contains what used to be called Street Atlas Handheld. |
GlobalSat BC-337 Compact Flash GPS
Bicycles Combined with Amateur Radio (return to top)
Bicycle Mobile Hams of America site & Yahoo! Club
GOBAHams.org (and alternate URL)
How to Wire a Bike for Ham Radio (PDF), by Bill Sharp, W8HI
Bicycles and Radios at ARRL, by Dick Arnold, AF8X
Bicycle-Mobile Antennas at ARRL
The Jurassic Duck--a 2m J-Pole antenna inside PVC, by WX2NJ
2m J-Pole by AA1EP
2m J-Poles by N6VNG
Bike 'n Hike Special antenna described by WB8ERJ
The Perfect HF Bicycle Mobile Antenna by Bonnie Crystal, KQ6XA on the HFPack Yahoo! Group (logon required)
Steven K. Roberts, N4RVE:
G4AKC HF Bicycle and Pedestrian Mobile
K2 Bicycle Mobile by N8MX
QRP Plus & K2 CW Bicycle Mobile by VE3JC
CW Bicycle Mobile by KB8U
HF Bicycle Mobile by N0LX, with FT-817
CW Bicycle Mobile - Field Day 2004 by KC4AUF, with Yaesu FT-900
Recumbant HF & VHF Bicycle Mobile by N1RWY
SGC-2020 Bicycle Mobile by NW7DX
SGC-2020 Bicycle Mobile by GØSBW
Bicycle Mobile by AF8X (2m FM and HF)
Bicycle Mobile, from a Beginner's Point of View by KD7S (20m CW)
Bicycle Camping Adventure and pictorial by AC6XK (HF CW)
IC-703 Bicycle Mobile by N0MLZ
W9XS Bicycle Mobile by Ron Baran--100-watt HF CW & SSB (and alternate URL)
Bicycle Mobile by K4MBE (2m FM)
Bicycle Mobile by N8AVR (gone?)
2m & CB Bicycle Mobile by VO1MDS
An article on 2m FM bicycle mobile by AA6WK
Bicycle Portable by K6WEB (2m FM)
Riding the Airwaves, bicycle mobile by KE4WMF (2m FM)
Mountain-Bike Mobile by N7QJP (2m/70cm FM)
Articles at BHMA (in JPG format):
| According to W8HI (link), a half-wave antenna wants to see feedline that's an odd multiple of 1/4-λ long. Three 1/4-λ is about 57" at 2m. Larson sells GBR-1 in this length with NMO on one end and BNC on the other. |
Build a Bluetooth Headset:
Canoes / Kayaks Combined with Amateur Radio (return to top)
Kayaking the Grand Canyon with a K-1 by WB6ZFG
QRP + Kayak = Outdoor Adventure by W8BHK
QRP with a Sea Kayak by AA4XX
QRP with a "Catacanoe" in the Adirondacks by N2XE
Canoe-portable QRP, German-style
Guide to Canoe/Kayak-mobile QRP by AE3C
Kayak-Portable by WV9I
Rowboat HF Mobile by N0LX
(See also the sites by Steven Roberts, N4RVE, above.)
WD8RIF Two-Way QRP Worked All States (return to top)
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50th state worked two-way QRP November 30, 2011; final QSL cards received January 19, 2012.
(map generated at World66)
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Miscellaneous (return to top)
VE3EN's SolarCycle24.com
Introduction to HF Radio Propagation (PDF) at Australian Government IPS Radio and Space Services
Why Ham Radio Endures in a World of Tweets by David Rowan
Online Great Circle Map Generator by NA3T and NV3Z
Announced DX Operations by NG3K
Active DX, by Date at Radioham.info
DXScape; spots can be filtered to just those from US hams and by band
DX Summit; click "Custom Spots" to find QRP DX
DXWatch.com
KØS Strange Antenna Challenge (new URL)
military masts:
Make-Your-Own Portable End-Fed Wire Antenna on a Spool, as discussed on QRP-L:
Ultra-light Antennas Based on a Panfish Pole by Bruce Grubbs, N7CEE
WA3WSJ Black Widow Vertical Antenna 20m, 30m, & 40m without a tuner
MiniBac antenna (Minimalist Backpacker Antenna System) by KQ6XA
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Joe Everhart, N2CX, has had good luck using a Black-Widow supported 40m end-fed half-wave wire with counterpoise for QRP NVIS work. See January, 2000, QRP Quarterly |
Portable Antennas by N0LX:
Dollar Store Special Antenna by WB3GCK
Sooper-Shooter by Robert Hightower, NK7M
B&W AP-10A & AP-10B Window/Balcony Portable Antenna; instructions: AP-10A | AP-10B
NVIS Ionospheric Map -- US (and tinyURL version)
55' Irrigation Pipe Push-Up Mast by Bob Bruninga, WB4APR
Build a Tiger Tail Counterpoise by W1CAR
VHF/UHF J-Pole:
N7VE SWR Indicator
Novice Historical Society
Michael Burkhardt's W8MHB.com--download question pool; generate practice exams and flash cards
Amateur Radio Today video with Walter Cronkite (for purchase or 70MB download) at ARRL
Boat-Anchor Nightlight (PDF) by AD5X
LED Station Lights:
Anderson Powerpoles:
The HyLaunch, Build a Compact, Integrated Antenna Launching System by Bill Jones, KD7S
Antenna Launching for Serious Practitioners by Russ Carpenter, AA7QU
75/60/40m NVIS Portable Antenna by W4CNG
The Museum of Radio & Technology in Huntington, WVa
K2TQN's Old Radio and Radio History Website with QST Column additional items
The Xtal Set Society
Voice of Victory (1944): Part I | Part II at Internet Archive
Emergency Power:
Battery Manual at Power-Sonic
Battery University & Batteries in a Portable World by Cadex Electronics, Inc.
Batteries & QRP by AE5X
The Care and Feeding of Gel Cell Batteries by WB3GCK
Battery Care (PDF) at EMRG
12-volt Battery Case with Powerpoles (PDF) by VE3UNW
LED Voltage Monitor (zip) by W1GHZ
A Long Haul H-T Battery System (PDF) by Thurman Smithey, N6QX, at ARRL Archives
Improved 9.6V Compact Fast Charger (PDF) by AD5X
Simple In-Line Current/Voltage Monitoring Fixture (PDF) by AD5X
BatteriesAmerica.com (and replacement packs for Icom)
NiCD Lady
WD8RIF has battery packs for Icom IC-2AT & IC-02AT handhelds:
WD8RIF has a Maha MH-C801D smart-charger for NiCD/NiMH AA/AAA cells.
Notes on AA cells:
Panasonic Oxyride AA cells:
Quantaray Super Z by PowerGenix (Nickel-Zinc):
Build a Dummy AA Cell forum topic
N1HFX 100kHz (or 50kHz) Crystal Calibrator: HTML & PDF formats
Hand Soldering and the Impact of the RoHS Directive (PDF)
Repair of RoHS Equipment at Hardware Secrets
Make Mine to Go by Anthony Luscre -- build a portable station
Aviation Headsets:
Partstore.com has parts, including earcups, for Sony MDR-V4 headphones
Ham Radio Magazine at Archive.org -- complete issues, February 1968 through June 1990, in PDF and other formats
73 Magazine at Archives.org -- complete issues, October 1960 through September 2003, in PDF and other formats
The Carl & Jerry Stories from Popular Electronics
Radio-Adventure Books by Walker A. Tompkins, K6ATX (SK):
This is a collection of links that I have found useful or interesting, either professionally or personally. It is maintained for my own use, and is subject to change at any time. No claims are made to completeness, accuracy, or competence. No endorsement of any site, individual, product, or corporation is intended. With these caveats, anyone is welcome to browse these links or to use this page.
Heathkit Lunch-Box paragraph found at the Heathkit Virtual Museum.
Inside-view photographs of Heathkit Lunch-Box found at the Heathkit Virtual Museum.
Photo of HW-7 chassis from manual; scan found at Boat Anchor Manual Archive.
Paragraph about HW-7 from Heathkit manual.
Paragraphs about and photo of DX-60 found at the Heathkit Virtual Museum.
Paragraphs about and photo of HR-10 found at the Heathkit Virtual Museum.
Heathkit walkie-talkie catalog page found within Heathkit 1961 catalog scan found at Technology Systems.
Heathkit walkie-talkie catalog page found within Heathkit 1963 catalog scan found at Technology Systems.
1979 Ten-Tec Omni D advertisement found at RigPix.com.
Ten-Tec Omni D Series C advertisement found at TenTecWikie.
Photos of B-17 radio installations found at www.b17queenofthesky.com.
"There's a real thrill" cartoon by Phil Gildersleeve found in the January, 1950 issue of QST magazine.
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