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DaveInDenver
06-16-2010, 05:04 PM
CFAP5-JWW3Q


I never want to hear you guys complaining that you need a more power or it's too hard to understand PL tones or repeater offsets...

This 9 year old girl (with a some help from dad) is building a hasty QRP CW transmitter. I don't know what she is building exactly, but my guess is one of the hacked radios that use the guts from an audio gadget (like an old Walkman) or 74xx family chip. You can see the schematic for a second at the very start of the video.

You can use just about any logic chip to make an oscillator that will work on the MF and low HF, 160m, 80m, maybe up to 40m bands and might radiate a watt or two, which is enough to talk hundreds of miles, with maybe a dozen parts. No soldering required even. Gotta know Morse, though. I'm working on that...

Ultimately it's all about the antenna!

http://www.qsl.net/qrp/tx.htm

wesintl
06-16-2010, 05:16 PM
what's hard is.... to watch that listening to the titanic flute. I only made it like 1:30 before I had to shut it off :D

Bruce Miller
06-16-2010, 07:29 PM
The best way to get to know Morse is to have a QSO with another op. String up an inexpensive wire antenna and listen for someone calling CQ then give them a call. No backing out or changing your mind-you've got to make it happen. And, yes, your investment has got to be in your antenna, no ifs, ands, or buts. CW is where all the action is!

DaveInDenver
06-16-2010, 09:38 PM
As long as he does 'a', 's', 'o', 'e' or 't' I'll be fine. :-) Differential equations was a snap compared to learning code. Really. I'm not good with languages. Tried to do German a couple of years ago and I just don't pick them up quickly for some reason.

Bruce Miller
06-17-2010, 05:34 PM
I like to hang out on the CW portion of the bands because of the challenge CW presents to me. I, too, could never learn a foreign language. CW is the closest I could get. It's still very much a challenge for me today after being on CW for 37 years. I think it was Winston Churchill who said "Play for more than you can afford to lose and you will learn the game." I think of that quote every time I fire up the rig. The challenge is huge but the rewards of making a CW QSO are even bigger. I hope they never take away our CW band privileges because of a lack of activity.

Corbet
06-18-2010, 11:53 AM
I made it to 1:40 but spent my time reading your oter posts. Bruce as much as I'd like to learn Morse I just don't have the energy to put towards it.

Beater
06-18-2010, 08:07 PM
code is easier to capture than to send. not that I would know...

DaveInDenver
12-22-2010, 06:18 PM
Using 100mW to communicate transatlantic, the power of HF!

6Tk4kz5OeIE

84cruzer
12-22-2010, 06:24 PM
Wish i was 9 again! :rolleyes:

nakman
12-22-2010, 09:21 PM
Using 100mW to communicate transatlantic, the power of HF!

6Tk4kz5OeIE

Sick!! QRP FTW!! :bowdown: http://www.risingsun4x4club.org/uploads/smileys/tinfoilhat3.gif

smslavin
12-22-2010, 11:23 PM
Differential equations was a snap compared to learning code. Really. I'm not good with languages. Tried to do German a couple of years ago and I just don't pick them up quickly for some reason.

Same here. I do a lot of work travel to Europe (mostly Belgium and Germany) and the best I've been able to accomplish is to ask about the weather, find a good restaurant and ask for the best beer. :D

DaveInDenver
12-23-2010, 06:41 AM
Same here. I do a lot of work travel to Europe (mostly Belgium and Germany) and the best I've been able to accomplish is to ask about the weather, find a good restaurant and ask for the best beer. :D
The important ones!

I would like a beer. Large please.
Ich hatte gerne ein Bier. Ja, bitte grosse.

I would like the sausage with cabbage.
Ich hatte gerne die Wurst mit Sauerkohl.

Where is the men's room?
Wo ist die WC? Vielen Dank!

Help, my monkey is sick!
Helfen, mein Affe ist krank!

May I borrow your towel? My truck hit a water buffalo.
Darf ich dein Badetuch leihen? Mein Hilux schlug einen Wasserbüffel.

Groucho
12-23-2010, 07:53 AM
The important ones!

May I borrow your towel? My truck hit a water buffalo.
Darf ich dein Badetuch leihen? Mein Hilux schlug einen Wasserbüffel.

Straight from Fletch! :lmao::lmao::lmao::lmao:

Bruce Miller
12-23-2010, 11:56 AM
20 meters was open to the South Pacific and to Japan yesterday afternoon.

Seldom Seen
12-23-2010, 02:53 PM
20 meters was open to the South Pacific and to Japan yesterday afternoon.

Dang, missed another opening. I was able to work W2 land last week via meteor scatter on 6 meters.

KC4USV McMurdo Station Antarctica is back on the air, 14.243 on Sundays at 0000 GMT. been trying to work them.

DaveInDenver
12-23-2010, 03:13 PM
More info related to the original video, a couple of about 1W CW transmitters based on a IRF510. Total of about a dozen parts.

http://blog.marxy.org/2008_09_01_archive.html

http://lh5.ggpht.com/peterbmarks/SOHOeaCKi1I/AAAAAAAAAw4/2tirpl7xTOU/AM%20Transmitter.jpg?imgmax=800

mVQaU0Jjq7g