ARRL

WA0CBW

Joined: Sat, Apr 4th 1998, 00:00 Roles: N/A Moderates: N/A

Latest Topics

Topic Created Posts Views Last Activity
Antenna Modeling for Beginners Feb 8th 2013, 18:19 3 1,594 on 14/2/13
Roller Inductor Tuner Dec 20th 2011, 19:26 1 1,446 on 20/12/11
Using Ladder Line Jul 27th 2011, 19:43 3 2,479 on 29/7/11

Latest Posts

Topic Author Posted On
Local Eoc (in case the web goes down) Round The Block Net Need Dirt Cheap Wireless Microphones! WD6EJN 2 weeks, 2 days ago
Yes you need a license for GMRS. For the most part there are very few frequencies that don't need licenses (MURS/FRS/CB). You may be a bit confused about "wireless microphones". Microphones don't transmit but the transmitter they are connected do. So a one watt microphone is really a one watt transmitter and depending on the frequency it uses would require a license. Also, wireless microphones need an antenna for the frequency they are using. The higher the frequency the shorter the antenna. The FCC regulates frequencies and what can be used on each frequency as well as the power levels. Have you looked into "stealth" ham antennas? There are many designs available for those whose locations are "antenna challenged".
Bill
field day What is it about? KC9UUU on 14/4/15
Sounds like your group has let the "logistics" of field day get in the way of the true purpose of Field Day.
BB
Fringe TV reception and 2 meters (filtering?) KD0FGH on 3/4/15
What are the frequencies of the distant TV stations? Are you using any amplifiers on the TV antenna? are you using a digital converter box?
I run a 50 watt 2 meter transceiver whose antenna is about 15 feet from my 2-bay "bow-tie" TV antenna with no interference to the TV.
BB
HW101 Xmit set-up KD0ZGW on 24/3/15
I assume you are keying the transmitter at step 7?
Bill
SWR and metal roof KO0Y on 16/3/15
In the two-way radio world what you describe is a classic case of water in the feedline. The fact that the SWR is low between the antenna and the feedline but high at the radio end would indicate a coax problem or a bad connector at the antenna end. If the metal roof or mast was a problem then the SWR would have been bad when measured at the antenna. Many times water in the coax is hard to detect unless you cut off a a few feet and examine the center connector.
Bill

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