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 1,956 on 14/2/13
Roller Inductor Tuner Dec 20th 2011, 19:26 1 1,812 on 20/12/11
Using Ladder Line Jul 27th 2011, 19:43 3 2,938 on 29/7/11

Latest Posts

Topic Author Posted On
Cell Phone Site and Repeater Site K7IHI 1 day, 9 hours ago
As Martin said the bigger issues are site access and installation costs of the antenna, coax, hardware, grounding and AC power. Most cell sites are managed by site management companies many of which are not friendly to ham radio. Their job is to make money for the site owners and the monthly cost can be quite high for amateur operators. Security and access is not easy at most sites. It is mandatory that main and secondary methods of remote repeater control be implemented as access can sometimes take weeks. Lastly is the fact that ANY interference issues become the problem of the last guy on the tower.
BB
RF Grounds, when a ground and when a Antenna? 1200bruce 2 days, 1 hour ago
The length of your "ground" has more to do with it than what it goes through or what it is connected to.

Congratulations on passing the test! What comes now is a lifetime of learning the practical application.
BB
Ham HT On Public Safety Bands K8AXE 6 days, 23 hours ago
A radio that is used in the public safety bands requires Part 90 certification. Ham radios that are not Part 90 compliant cannot be used in the public safety bands. Part 90 radios can be used in the Ham bands.
Bill
Hallicrafters SX-100 Mark II and Knight T-60 W5DIX 1 week, 2 days ago
For information the T-60 is a CW or AM transmitter only. Although there is some AM activity Upper or Lower sideband dominate most of the bands. There is plenty of CW activity however. After my first home built transmitter (807 tube of course) I purchased a knight T-60. It was a pretty good transmitter for its time. My first receiver was a Hallicrafters SX-100 as well. If I remember correctly the SX-100 had a switch to control an external antenna relay to switch between transmit and receive.
Bill
Hitting a repeater with HT? W0SJF 1 week, 6 days ago
The things you mentioned will let you know you brought up the repeater but they don't indicate that your signal is strong enough to be understood. A very weak signal can bring up the repeater but to be understood your signal needs to be about 12db or greater than the noise . There isn't any real way to know if your signal is noisy or unreadable. You can ask for signal reports or listen to other users and their locations to get a feeling for the coverage area of the repeater. Also remember that handhelds are low power and their antennas are very inefficient so you will need to be close to the repeater or line of sight to be readable. Sometimes moving a foot or two can mean the difference of being unreadable or full quieting.
BB

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