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 1,696 on 21/9/12
USB to Serial Port problems--Prolific Drivers Aug 3rd 2012, 18:27 1 1,929 on 3/8/12
Italian Phishing emails! Dec 13th 2011, 14:20 1 1,570 on 13/12/11
John K0GMO needs help designing SS Amp Nov 17th 2011, 15:53 1 1,458 on 17/11/11
1 Farad Capacitor to Eliminate Headlight Flicker? Oct 19th 2011, 13:14 4 2,484 on 9/11/11
History of Relay Rack Dimensions? Oct 17th 2011, 12:58 2 1,701 on 25/10/11
Miswired Selsyn Oct 13th 2011, 17:51 1 1,512 on 13/10/11
Stealth Antenna wire Sep 12th 2011, 12:51 2 2,145 on 13/9/11
Designing a ham bench Aug 29th 2011, 12:38 2 2,352 on 29/8/11
Can't find recent Hint and Kink Aug 26th 2011, 13:01 1 2,153 on 26/8/11

Latest Posts

Topic Author Posted On
Programming Yaesu radios with Linux rhughes 1 day ago
Beginner's Guide for a Yaesu FT-60 Handy-Talkie - Rick ...
http://rick.sparber.org/bg60.pdf
February 22, 2015. Guide to the Yaesu FT-60R/E Handy-Talkie, version 2.2 by KG7MQL.
VHF folded dipole array freq. adjust KJ5GY 2 days, 3 hours ago
http://www.repeater-builder.com/antenna/db-224-to-2m.html

This page suggests bolting on aluminum strips to the top and bottom to make the antenna longer.
This is different from the supplied photos, which have his first idea that put bolt holes through the elements.

Zack Lau W1VT
ARRL Senior Lab Engineer


RS/RST in contests KB9YOJ 1 week, 2 days ago
Many VHF contests only require a grid square or location identifier as the exchange.

But, the signal report can be useful, as it allows you to "synchronize" with the other station, or give a slight but useful delay if someone has transmitter issues like first character shortening.

Zack Lau W1VT
ARRL Senior Lab Engineer
Analog Atomic Wall Clock With Silent Second Hand No Battery WD6EJN 1 week, 3 days ago
Atomic clocks use batteries to allow for better reception of the 60 kHz WWVB signal. Harmonics of AC power disrupt WWVB reception. GPS clocks operated inside building typically need external antennas to receive satellites.

http://geoffg.net/GPS_Synchronised_Clock.html
This project replaces the electronics in a standard quartz wall clock with a circuit that uses GPS satellites to get the precise time. This page also points out that you can buy movements by Citizen and Seiko that have a continuous sweep second hand that is silent.

Seiko QXA628KRH Wall Japanese Quartz Wall Clock
This clock could be used for either 12 or 24 hour time, as there are markings for hours 13 through 24. But, it does run on an AA battery--perhaps you could redesign it to run on solar power?

http://www.masterclock.com/products/clkntd12-24hm.php
This company sells a 24hour clock you can plug into to your computer that gets accurate time via Internet servers. No AA batteries and quiet operation with an analog dial.

Zack Lau W1VT
IMPORTING TRAVELPLUS TO KENWOOD MCP-2A KD1WZ 1 week, 5 days ago
https://www.rtsystemsinc.com/TM-V71-Programming-Software-and-USB-cable-p/krs-v71-usb.htm

RT Systems may sell a program with the functionality you need.

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