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W1VT

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

Latest Topics

Topic Created Posts Views Last Activity
QST Downloads Feb 19th, 16:34 1 182 on 19/2/16
March 2016 QST Compact Multiband Dipole Feb 19th, 15:23 1 236 on 19/2/16
Antenna analyzer vs feedline type Sep 21st 2012, 14:37 1 2,205 on 21/9/12
USB to Serial Port problems--Prolific Drivers Aug 3rd 2012, 18:27 2 2,568 on 26/12/15
Italian Phishing emails! Dec 13th 2011, 14:20 1 1,937 on 13/12/11
John K0GMO needs help designing SS Amp Nov 17th 2011, 15:53 1 1,787 on 17/11/11
1 Farad Capacitor to Eliminate Headlight Flicker? Oct 19th 2011, 13:14 4 3,004 on 9/11/11
History of Relay Rack Dimensions? Oct 17th 2011, 12:58 2 2,051 on 25/10/11
Miswired Selsyn Oct 13th 2011, 17:51 1 1,922 on 13/10/11
Stealth Antenna wire Sep 12th 2011, 12:51 2 2,556 on 13/9/11

Latest Posts

Topic Author Posted On
Chirp Problems N4LCV 5 hours, 35 minutes ago

Are you using a known good USB cable?

Zack Lau W1VT
ARRL Senior Lab Engineer
Do I need a rig control cable for jt 65 or jt 9? KJ6BQM 11 hours, 22 minutes ago
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html
I use this program.

Here is one way to hook up the 857D to a Signalink.
http://www.qsl.net/na4it/slusb/slusb_ft857d.html

Zack Lau W1VT
ARRL Senior Lab Engineer
SW receiver from old cellphone parts KK4UYV 1 day, 10 hours ago

I'd say that if the manufacturer used IC die and connected them to the real world with 0.001 inch thick wires with wirebonding machines, then covered them with epoxy for protection, those semiconductors are unusable by the average ham.

Zack Lau W1VT
ARRL Senior Lab Engineer
battery power WD9DMM 1 day, 10 hours ago

A rough guess would be around 4 hours. It draws a relatively large amount of current on receive, which makes it a somewhat poor choice for battery operation.

Zack Lau W1VT
ARRL Senior Lab Engineer
tuning antenna leroy271 3 days, 14 hours ago
https://rsars.files.wordpress.com/2013/01/w3dzz-antenna-iss-1-31.pdf
Typically, you add traps rather than coils to prevent the 80 meter coils from also loading down the antenna when you want to use it on 40 meters.

Zack Lau W1VT
ARRL Senior Lab Engineer

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