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QST Downloads Feb 19th 2016, 16:34 1 963 on 19/2/16
March 2016 QST Compact Multiband Dipole Feb 19th 2016, 15:23 1 793 on 19/2/16
Antenna analyzer vs feedline type Sep 21st 2012, 14:37 1 2,679 on 21/9/12
USB to Serial Port problems--Prolific Drivers Aug 3rd 2012, 18:27 2 3,228 on 26/12/15
Italian Phishing emails! Dec 13th 2011, 14:20 1 2,334 on 13/12/11
John K0GMO needs help designing SS Amp Nov 17th 2011, 15:53 1 2,180 on 17/11/11
1 Farad Capacitor to Eliminate Headlight Flicker? Oct 19th 2011, 13:14 4 3,746 on 9/11/11
History of Relay Rack Dimensions? Oct 17th 2011, 12:58 2 2,434 on 25/10/11
Miswired Selsyn Oct 13th 2011, 17:51 1 2,343 on 13/10/11
Stealth Antenna wire Sep 12th 2011, 12:51 2 2,999 on 13/9/11

Latest Posts

Topic Author Posted On
eclipse qso how log ft8 in n1mm+ ?? KJ6BQM 16 hours, 43 minutes ago
From the N1mm logger website
Logging Digital Mode Contacts
While you are entering contacts "live", N1MM+ only supports a few digital modes: RTTY, PSK31 and PSK63. However, this does not mean that you cannot log other digital modes such as JT65, MSK144, FT8, and so on. First, put the program into one of the supported digital modes (e.g. PSK31) while logging the contact real-time. Later (any time before exporting to ADIF or Cabrillo), you can select the contact in the Log window, right-click on it, select Edit Contact, and edit the Mode box in the dialog window. You can either use Update to change a single contact, or the up or down arrows at the lower right to change a contact and move to the next one so you can edit multiple contacts in succession. The edited mode is what will be exported to ADIF or Cabrillo, although in the case of Cabrillo what will appear is only a two-letter abbreviation.
Relay with FT 857 KB3YKT 5 days ago
I use a lot of SMA relays on the microwave bands. There are lots of cheap relays that will work up to 6M--just check out homebrew remote switch articles.

Zack W1VT
ARRL Senior Lab Engineer
Is a Balun needed or helpful - EF Antenna KI7LFD 1 week, 1 day ago
An important part of that antenna is the sealed matching unit. It can be a challenge to come up with a design that works efficiently. Many simple homebrew designs can only handle low power. If you discover that the SWR is drifting, that is a sign the balun or matching unit is dangerously overheatingm, so you should stop transmitting.

It is a good idea to insulate an end fed wire well from the trees. An end fed multiband antenna will have high impedance points at several points along that wire. Capacitive coupling to trees will not only steal power from the antenna, but may adversely affect the SWR performance of the antenna.

Zack Lau W1VT
ARRL Senior Lab Engineer
HF RF Tripping Arc Fault Circuit Interrupters (AFCI's) W4TL 1 week, 2 days ago
Page 32 of the September 2017 QST has a full page Q&A with information on contacting Eaton.
6 & 10 Meter Reception Johnymac 1 week, 4 days ago
It could be either F2 or Sporadic E. That is about the right time for F2, but the probability is rather low at this part of the Sunspot Cycle. This is the right time of year for Sporadic E, but the probability for any given path is also quite low. There is one important difference between the paths--E-skip of that path length is double hop. Hearing stations in the middle of the path would mean E skip. There would not be F2 skip of that short a path length on 10 meters. The DX maps web site plots paths on a map to help determine propagation modes.

Zack W1VT
ARRL Senior Lab Engineer

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