CW
Top
NanoVNA
Experiments to try (mainly antennas)
From a massive thread on the SKCC mailing list:
- Linked dipole as inverted V, fishing pole as mast
- 132 feet of wire, up only 12 feet; it's a half wave NVIS on 80m, full wave on 40m with prop off ends about 60 degrees, and 2 wavelengths on 20m, with low angle propagation off the ends.
- Measure SWR for an EFRW
- Random wire, end fed, directly attached to antenna post; attach counterpoise to ground post.
- 66 foot dipole (so 33 feet on each leg), fed with ladder line.
- Slinktenna!
- Homebrew Silver Bullet Coil
- W3EDP antenna - EFRW fed with ladder line
- KE4PT Off-centre-end-fed dipole
- No-stick buddy-stick antenna
Getting wire up tree:
- 1oz egg-shaped fishing weight, 20lb test mono, pulling up copper. Use a slingshot.
- Arborist's throw, with slick line.
- Teflon fishing line.
QRM
CW
- ARRL Code transmissions
- How to call CQ and make a QSO
- CW beginners guide
- Another beginner's guide to CW
- What I've learned about CW
Listening
WSPR
Elecraft K2 and digital modes
- W3FPR's page on the K2 and mods for digital modes
Pat board - Panadapter for Elecraft K2
- Reddit wiki page on computer-to-radio interface
Pixie
- How the pixie works
- The Sprat Pixie file - history of the Pixie design
- Increase the power of the Pixie
- Pixie page - VK3YE
- eHam reviews (some good tips here)
- Some more good tips here
- Troubleshooting tips for Rockmite - similar-ish design
- LU3ZA's fix for broadcast interference
- Bandpass filter for the pixie
- Another bandpass filter for the pixie
- Great pixie build/improvement page from K4ICY
- KB2HSH Pixie build
Transceivers
- So many QRP transceiver designs here!
- Building the MMR-40 Dead-bug style
- this is a neat transceiver:
- permeability-tuned oscillator
- plus info on a diode probe!
- this is a neat transceiver:
Arduino
SWR Bridge Resistance LED - this could fit into an altoid tin easily
Altoids Tin
Antennas
Contacts with MFJ whip antenna -- really need to start playing around with this again...
- Homebrew Buddistick/Buddipole
- More details on the Black Widow
SOTA thread: How are you feeding 1/4 wave verticals?
- some direct
- some with 1:1 balun, or 9:1 to tune for other bands
- some above ground (1.5m)
- some with air choke; may vary depending on feedline length
- radials kept off ground
- Fishing pole support for vertical
- 20m Fiberglass Antenna
W3EDP antenna - Endfed zepp (ladder line) - needs 4:1 balun
Homebrew EFHW -- with really excellent explanation of how this works
Earchi antennas, EFRWs and EFHWs
- EARCHI instructions
- Some calculations on EFRW, including toroid choices
- Great presentation with lots of detail on toroid choice, etc.
Tuners
SWR Bridge Resistance LED - this could fit into an altoid tin easily
Inductors
- Variable inductor - list of circuits where used
- Another variable inductor
Capacitors
Homebrew variable capacitors:
Simplest possible homebrew variable capacitor - God bless the Russians!
Nets & Frequencies
Propagation
Contests / Memberships / Clubs
- Cookie crumble number: 353
- NAQCC membership number: 9473
SKCC membership number: 21396
Neat
Blogs
HF on Mars
- HF radio wave attenuation due to a meteoric layer in the atmosphere of Mars
- Propagation on Mars - blog post from KD7UIY
- Stack Exchange reply
- NASA report: Radio Wave Propagation Handbook for Communication on and Around Mars
Tools
- Tropo ducting forecast
HamAlert - alert when call sign shows up on Reverse Beacon, DX tools, etc
- RBN Heatmap!
Wonderful ionosphere charts from AF7TI
Satmatch.com - predicts satellite passes that will work between two grids
Maidenhead grids
- New West: CN89nf
- Burnaby (Xtofaros): CN89lg
Satellite runthrough
From K8BL on the AMSAT mailing list:
When you hear someone announce their Call or Call & Grid (Nobody calls CQ), and there is no other QSO in progress, give their and from your Call or Call & Grid. Always use standard phonetics and individual numbers.
Example:
(RX) Whiskey One Alpha Bravo, Fox November Two Zero
(TX) Whiskey One Alpha Bravo from Kilo Six Yankee Zulu
(RX) Kilo Six Yankee Zulu here is Whiskey One Alpha Bravo, Fox November Two Zero, over
(TX) Whiskey One Alpha Bravo, QSL from Kilo Six Yankee Zulu, Delta Mike One Four
(RX) QSL Seven Three from Whiskey One Alpha Bravo
Try to be quick before some else calls W1AB. If they do, wait for the sequence to finish and call. If someone else announces their Call, you can call them or W1AB. Or, you could announce your Call and see if someone calls you. In any event, do not make any call if there is a QSO already in progress. Remember, the FM birds are a shared resource and there may be a number of Hams anxiously waiting to use it. Be fast and brief.
Lilacsat images
Cheat Sheet
Remember
- Begin every exchange with "xxxxx de va7unx"
- Finish with "ar xxxxx de va7unx kn"
(Source: http://k4kpk.com/cw-cheat-sheet)
Me calling CQ:
cq cq cq de va7unx va7unx va7unx k
va7unx de xxxxx kn (ar)
xxxxx de va7unx gm (ga/ge) tnx call ur 599 599 in new westminster bc new westminster bc =
name hugh hugh hw? ar xxxxx de va7unx kn
va7unx de xxxxx r r gm hugh ur 599 599 in chico ca chico ca =
name alan alan hw? ar va7unx de xxxxx kn
qth is New Westminster, BC =
rig is K2 at 12 watts =
ant is end fed 25 foot wire =
job is systems engineer for cisco =
wx is ( sunny / rain / windy / cloudy / hot / cold ) =
been ham since 2018 = new to cw =
mostly i do portable at parks = what is ur fav ham specialty? = xxxxx de va7unx kn
CW is tiring to a newb = 73 es tnx =
(must go to work) / (oops, kids quarrel) =
(back to u) / (73 es tnx) =
xxxxx de va7unx ( kn / sk)
Tunable for CW (includes 500 Hz safety margin):
40M: 7.025.5 - 7.124.5
SKCC elmering: 7.114
every Friday is SKCC “novice day” on the frequencies near 7114
QRP calling: 7.030
QRZ forum suggests:
7.120-7.125
7050-7060.
Try between 7050-7125
Try 7100 to 7150
Join SKCC
Do a google search for Texas Slow Net, Oklahoma Training Net, Georgia Slow Net, slow CW net, etc
FISTS calling: 7.058 and 7.028
30M: 10.100.5 - 10.149.5
FISTS calling: 10.118
20M: 14.025.5 - 14.149.5
QRP calling: 14.060
FISTS calling: 14.058
17M: 18.068.5 - 18.109.5
FISTS calling: 18.085
15M: 21.025.5 - 21.199.5
FISTS calling: 21.058
Old Novice band: 21.1-21.199.5
12M: 24.890.5 - 24.929.5
FISTS calling: 24.908