ARRL

W1VT

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

Latest Topics

Topic Created Posts Views Last Activity
Antenna analyzer vs feedline type Sep 21st 2012, 14:37 1 1,334 on 21/9/12
USB to Serial Port problems--Prolific Drivers Aug 3rd 2012, 18:27 1 1,588 on 3/8/12
Italian Phishing emails! Dec 13th 2011, 14:20 1 1,345 on 13/12/11
John K0GMO needs help designing SS Amp Nov 17th 2011, 15:53 1 1,231 on 17/11/11
1 Farad Capacitor to Eliminate Headlight Flicker? Oct 19th 2011, 13:14 4 2,111 on 9/11/11
History of Relay Rack Dimensions? Oct 17th 2011, 12:58 2 1,448 on 25/10/11
Miswired Selsyn Oct 13th 2011, 17:51 1 1,289 on 13/10/11
Stealth Antenna wire Sep 12th 2011, 12:51 2 1,859 on 13/9/11
Designing a ham bench Aug 29th 2011, 12:38 2 1,942 on 29/8/11
Can't find recent Hint and Kink Aug 26th 2011, 13:01 1 1,867 on 26/8/11

Latest Posts

Topic Author Posted On
how i can make a antenna for 2m yagi wp4oco 11 hours, 10 minutes ago
Controlled Impedance “Cheap” Antennas Kent WA5VJB’s computer optimized 144MHz to 1296MHz antennas with a clever asymmetrical feed.

http://www.wa5vjb.com/yagi-pdf/cheapyagi.pdf

http://www.wa5vjb.com/downloads.html

TravelPlus for Repeaters - Multiple Routes n9apd 2 days, 16 hours ago
It is very easy to do multiple but not connected routes or separate point locations in TravelPlus. In TravelPlus we call these Independent map locations or route segments

Once you have created any route which has at least one point, all you need to do is move the cursor to the location you want to place the independent location or route segment, hold down the Shift key and left click. This will place a route circle at this point with the radius you have selected. You may do this Shift / Click to create as many independent points or route segments as you wish. At any new point, you may make it into a route by doing a normal left click from the new point. You can then Shift / Click to create another independent point which can stand alone or become a route segment.

After you have created your independent points or segment (or at any time really) you can modify the Range of any point or route segment by right clicking on the point or segment and adjusting the range.

There is a Help file topic which provides additional information and some map examples. It is in the Working with Maps section and is titled Define Independent Map Locations/Route Segments.

[info provided by the program developer]
Gamma Match Question KD8ZIH 2 weeks, 3 days ago

In most cases, it is impractical to close off the end of an aluminum tube electrically in a fashion that will hold up to the rigors an antenna must endure.

Zack W1VT
ARRL Senior Lab Engineer

WINLINK TNC N2PHI 4 weeks ago

Pactor is used for HF Winlink nodes, but the hardware modems used are expensive.

There has been a trend to skip using hardware modems and use the computer to handle the software functions of a TNC.

https://groups.yahoo.com/neo/groups/WINMOR/info
Winmor is a software alternative to a Pactor modem.

On HF, hams will use software programs with a simple hardware interface to operate modes like PSK31, JT65, and RTTY. I've heard that MARS (Military Affiliate Radio Service) uses FLDigi and MT63.

http://aintel.bi.ehu.es/psk31.html
http://physics.princeton.edu/pulsar/K1JT/
http://www.w1hkj.com/Fldigi.html

Zack W1VT
ARRL Senior Lab Engineer




Email forwarding question n1chu 4 weeks, 2 days ago


You should use the account where email is forwarded. It sounds like you have a Comcast account--you should use that.

Zack W1VT
ARRL Senior Lab Engineer

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