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QST Downloads Feb 19th, 16:34 1 320 on 19/2/16
March 2016 QST Compact Multiband Dipole Feb 19th, 15:23 1 353 on 19/2/16
Antenna analyzer vs feedline type Sep 21st 2012, 14:37 1 2,304 on 21/9/12
USB to Serial Port problems--Prolific Drivers Aug 3rd 2012, 18:27 2 2,703 on 26/12/15
Italian Phishing emails! Dec 13th 2011, 14:20 1 2,022 on 13/12/11
John K0GMO needs help designing SS Amp Nov 17th 2011, 15:53 1 1,861 on 17/11/11
1 Farad Capacitor to Eliminate Headlight Flicker? Oct 19th 2011, 13:14 4 3,159 on 9/11/11
History of Relay Rack Dimensions? Oct 17th 2011, 12:58 2 2,138 on 25/10/11
Miswired Selsyn Oct 13th 2011, 17:51 1 2,030 on 13/10/11
Stealth Antenna wire Sep 12th 2011, 12:51 2 2,648 on 13/9/11

Latest Posts

Topic Author Posted On
Using Penetrox on antenna joints and.... 1200bruce 14 hours, 59 minutes ago
Yes, Penetrox is one approach to take. Another is to cover the connection with self amalgamating rubber--it may be impractical to combine the two approaches, as the oily fluid may make it hard for rubber to stick.

I get a lot of rain, so I prefer to cover my antenna connection with self amalgamating rubber.

Zack Lau W1VT
ARRL Senior Lab Engineer
Aircraft Radar Dongle Software KF6FGH 3 days, 15 hours ago
The download and install procedure was changed in September 2015.

Zack Lau W1VT
ARRL Senior Lab Engineer
Equipment type certification vs. conformance? jazzop 4 days, 3 hours ago
I think the problem is there is no longer a "super user" license--there used to be First Class Telephone licenses that the FCC could used to ascertain user proficiency, but they are no longer issued.

You are lucky if you can accurately measure radiated emissions--the ARRL HQ lab doesn't has an anechoic chamber for measuring them due to the high cost of such facilities.

Zack Lau W1VT
ARRL Senior Lab Engineer
6 & 10 Meter Reception Johnymac 1 week, 2 days ago

Propagation beyond local coverage is highly unpredictable on 6M.
This web site provides maps to help DXers spot openings

There was a rare E skip opening between New England and CY9C that allowed many contacts on the 15 to 6M bands.

Zack Lau W1VT
ARRL Senior Lab Engineer
I'm a General Class operator but still in group D. KG5GHA 2 weeks, 5 days ago
When the call signs in any regional-group list are exhausted, the selection is made from the next lower group.

Rather than use up all the group C callsigns by assigning them sequentially, the FCC chose to move to group D. This gives hams like you the opportunity to choose a particular group C call that hasn't been assigned. Many hams like to pick 1x3 calls with their initials. 2x2 vanity calls are still available to hams that upgrade to Extra.

Zack W1VT
ARRL Senior Lab Engineer

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