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49megahertz · 49MHz Experimental Radio
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Messages 266 - 295 of 1109   Oldest  |  < Older  |  Newer >  |  Newest
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266
These frequencies are the frequencies that the 49MHz ERC suggests you use for hobbyist operations. Because the 49MHz band is shared with military operations,...
49megahertz@yahoogrou...
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Sep 1, 2003
10:20 am
267
... Hmmm, I wonder if one could home-brew a radio with seperate transmit and recieve antennas, transmit being one meter long, permanently mounted on the...
John H. Guetherman
jhguetherman
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Sep 1, 2003
2:27 pm
268
Quick question on dipole antennas, if each wire on a text book dipole was a full wave length long, like 6 meters in our case, would it preform better than a...
tack188@...
tackleberry_nj
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Sep 1, 2003
5:46 pm
269
Of course! If you really wany to hear what's going on out there use a beam, pre-am and filter for RX. In this case the FCC is concerned with intentional...
KD7JYK
facility_406
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Sep 1, 2003
7:11 pm
270
This is sort of what I plan on doing. Pete ... transmit ... wondering....
Pete Crapia
bachelorsgro...
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Sep 2, 2003
1:15 pm
271
Alan asked me to forward this on to the group. I guess he's having some trouble with Yahoo right now... Isn't everybody? :-) 73 de Michael 49H3MA President,...
Fbs1050@...
kb3hfp
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Sep 2, 2003
1:56 pm
272
You will have problems with pagers, toys, radios, baby monitors, phones, sprinkler systems, TV and stereo assessories... The list goes on and on. You have...
KD7JYK
facility_406
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Sep 3, 2003
1:21 am
273
The transmitting antenna can be no longer than 1 meter, which is 39.3701 inches, and it must be permanently attached to the enclosure, meaning no coax,...
John H. Guetherman
jhguetherman
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Sep 3, 2003
9:17 am
274
I am surprised 2.4 GHz was ever authorized, since your microwave oven operates at 2.45 GHz. Tony...
meridian3891@...
onemeridian
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Sep 3, 2003
8:02 pm
275
Im working on the same thing. Id like to get a yagi working too for 49, Ive got a dipole right here that I can use but horizontal polarization isnt what I...
tackleberry_nj
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Sep 3, 2003
11:50 pm
276
Hi to all,thanks for letting me join the group. I am an extra class amateur, gmrs kae5765 with several repeaters on the air that I built myself,a 10 Meter QRP...
Michael Tyler
michaeltylerwv
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Sep 4, 2003
4:42 pm
277
I'll be using the transmitter mounted on the roof directly at the antenna which is controlled remotely. From there I haven't decided what I want to do for...
Pete Crapia
bachelorsgro...
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Sep 4, 2003
10:34 pm
278
... oven operates at 2.45 GHz. ... True, but for health safety reasons, all of that energy is supposed to be completely contained within the oven itself. It...
John H. Guetherman
jhguetherman
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Sep 5, 2003
12:27 am
279
All, I'm hearing music (non-descript piano) on 49.830 on a Radio Shack 21- 403 bicycle walkie talkie. There seems to be noise in the background. Maybe a baby...
Steven Coles
steven_coles
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Sep 16, 2003
5:08 am
280
... IMHO, that might be a good idea, just make sure that the note reads more like "I am a radio monitor and came across the signal of your baby monitor. I just...
Fbs1050@...
kb3hfp
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Sep 16, 2003
1:07 pm
281
That brought something to mind, do you have a nieghborhood watch program? You could bring a scanner to the meeting and let people listen to their own baby ...
tack188@...
tackleberry_nj
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Sep 16, 2003
3:28 pm
282
Hi Group, I think what the poster of this message meant is that the sign might go something like: ====================================== -=- BABY MONITOR...
Community Radio
ASCR@...
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Sep 16, 2003
5:11 pm
283
I wrote up a small flier with the club logo and some text on cordless phones and baby monitors, as well as some safety tips for using phones and baby monitors....
Fbs1050@...
kb3hfp
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Sep 16, 2003
6:50 pm
284
Not harder to hear, but it does take three to four seconds longer to find due the the "band" being nearly twice as big. The range a clarity are much better...
KD7JYK
facility_406
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Sep 16, 2003
9:40 pm
285
What I meant was that many people have scanners without 900 mhz coverage, some 900 phones are digital, and most have some sort of feature that skips from ...
tack188@...
tackleberry_nj
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Sep 16, 2003
10:13 pm
286
Now we're getting somewhere!!!! .223 or 30-06 has ten times the range of 49 MHz!! Kurt ... Ross Technologies Signals Intelligence Division Rosetta Proving...
KD7JYK
facility_406
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Sep 17, 2003
12:35 am
287
Community Radio, That's very close to what I had in mind. Plus a reminder that turning the receiver off does not end the transmission. You'd be surprised (or...
Steven Coles
steven_coles
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Sep 17, 2003
2:17 am
288
Hi All, I've loved walkie talkies since the 1950s. My ex-wife was into using our Radio Shack 21-403s for biking. (We're still on good terms and some of her...
Steven Coles
steven_coles
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Sep 17, 2003
2:54 am
289
Some folks may react negatively to the notice. You can't predict human behavior. If you want to do it without giving away your identity, make sure no one knows...
John H. Guetherman
jhguetherman
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Sep 17, 2003
9:16 am
290
John, Good points certainly. I'd expect some negative reaction. People would rather shoot the messenger than admit they made a foolish purchase. My plan was...
Steven Coles
steven_coles
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Sep 17, 2003
1:21 pm
291
Take a trip away from your home location, and listen for clear channels. Do not let anyone know you can hear them, or you will become the bad guy. And, if a...
Robert
kb7aqd
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Sep 18, 2003
5:14 am
292
For some ideas on how to make our little 49 MHz signals "get out" further, I would suggest the Longwave Club of America and their information on Part 15...
Robert
kb7aqd
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Sep 18, 2003
5:40 am
293
Robert, You wrote, "Do not let anyone know you can hear them, or you will become the bad guy. And, if a local news reporter get hold of this during a slow...
Steven Coles
steven_coles
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Sep 18, 2003
2:40 pm
294
All, Picked up a copy of Sands, Leo G, Walkie-Talkie Handbook, Sams, 1967. It does not cover 49 MHz sets as far as I've looked so far. However, the early 49...
Steven Coles
steven_coles
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Sep 20, 2003
3:00 am
295
Nice photographs and details of his many experiments with QRP level weak-signal radio beacons from longwave through 49 MHz....
Robert
kb7aqd
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Sep 21, 2003
5:50 am
Messages 266 - 295 of 1109   Oldest  |  < Older  |  Newer >  |  Newest
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