ARRL

Secure Site Login

W1VT

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

Latest Topics

Topic Created Posts Views Last Activity
QST Downloads Feb 19th 2016, 16:34 5 7,743 on 25/4/20
March 2016 QST Compact Multiband Dipole Feb 19th 2016, 15:23 1 4,588 on 19/2/16
Antenna analyzer vs feedline type Sep 21st 2012, 14:37 1 6,099 on 21/9/12
USB to Serial Port problems--Prolific Drivers Aug 3rd 2012, 18:27 2 7,147 on 26/12/15
Italian Phishing emails! Dec 13th 2011, 14:20 1 5,722 on 13/12/11
John K0GMO needs help designing SS Amp Nov 17th 2011, 15:53 1 5,812 on 17/11/11
1 Farad Capacitor to Eliminate Headlight Flicker? Oct 19th 2011, 13:14 4 7,770 on 9/11/11
History of Relay Rack Dimensions? Oct 17th 2011, 12:58 2 5,728 on 25/10/11
Miswired Selsyn Oct 13th 2011, 17:51 1 5,866 on 13/10/11
Stealth Antenna wire Sep 12th 2011, 12:51 2 6,458 on 13/9/11

Latest Posts

Topic Author Posted On
Order / Gain Structure of RX Front End? VE2EOT 1 week, 6 days ago
Typically a designer comes up with a compromise between sensitivity, dynamic range, complexity, and cost. Everyone has a different idea what is best.

One approach is to build "building blocks" connected with 50 ohm cables. You can then experiment to see what works best for you.

Zak W1VT
ARRL Senior Lab Engineer
Pl259 Grounding KO4VLR 2 weeks ago
I have several UHF bulkhead connectors mounted on a small copper plate to bond all the shields together at one point. I also have BNCs and one F bulkhead mounted on the same plate.

Zak Lau W1VT

ARRL Senior Lab Engineer.
Silent Key “W2LT” michaeltingey 2 weeks, 1 day ago
That is a tough one. Normally one can find cards on ebay. Just set a search for "W2LT QSL" and have them email search hits. But, it is likely that as he evolved into a serious DXer, he only sent cards to DX stations overseas.

Zak W1VT
ARRL Senior Lab Engineer
2nd hand held KJ7SUA 2 weeks, 2 days ago
A mobile radio is the best way to get more power. The receivers are better and less likely to be interfered with when connected to a good antenna. Handhelds may overload when connected to good antennas.
A rural area is no guarantee that there won't be nearby transmitters. There may be one strong cell phone transmitter to serve a large area that may be worse than the low power ones uses in urban areas.

Zak W1VT
ARRL Senior Lab Engineer
Dipole KO4VLR 2 weeks, 6 days ago
https://www.ecmweb.com/national-electrical-code/code-basics/article/20891084/article-810-radio-and-television-equipment
Yes, an external antenna should be grounded for lightning protection.

A balun, on the other hand, is optional.
It is desirable to use one, as bonding an antenna to ground as required by the NEC will typically introduce a path for common mode interference. Grounds systems can be noisy.

Zak W1VT
ARRL Senior Lab Engineer

Back to Top