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QST Downloads Feb 19th 2016, 16:34 3 2,578 on 19/3/18
March 2016 QST Compact Multiband Dipole Feb 19th 2016, 15:23 1 1,739 on 19/2/16
Antenna analyzer vs feedline type Sep 21st 2012, 14:37 1 3,567 on 21/9/12
USB to Serial Port problems--Prolific Drivers Aug 3rd 2012, 18:27 2 4,261 on 26/12/15
Italian Phishing emails! Dec 13th 2011, 14:20 1 3,168 on 13/12/11
John K0GMO needs help designing SS Amp Nov 17th 2011, 15:53 1 3,047 on 17/11/11
1 Farad Capacitor to Eliminate Headlight Flicker? Oct 19th 2011, 13:14 4 4,767 on 9/11/11
History of Relay Rack Dimensions? Oct 17th 2011, 12:58 2 3,220 on 25/10/11
Miswired Selsyn Oct 13th 2011, 17:51 1 3,250 on 13/10/11
Stealth Antenna wire Sep 12th 2011, 12:51 2 3,872 on 13/9/11

Latest Posts

Topic Author Posted On
Copperweld antenna wire tallroger 2 days, 1 hour ago

It rusts very quickly in typical ham environments.
Change ARRL email forwarding address? KG6POV 5 days, 14 hours ago

This page has detailed information on testing the email forwarding. It suggests waiting six hours for the forwarding to update.
To Test Your Alias
*Please allow approximately 6 hours for the e-mail forwarding service to activate after you have selected or modified the information*

Please send a test e-mail from an account other than the address in the "E-mail" field in your profile. Test messages cannot be sent to yourself.

For Example, your e-mail address is and your alias is If you send a message from to your alias the message will not forward back into your inbox. Send a test message from an alternate account to get a reliable test and avoid a bounced message.

Note: You cannot have your e-mail set to forward to your alias. This action causes a mail routing loop and mail will fail to be delivered. Also, a bounced message usually does not get generated in this situation.

For Example, your e-mail address is and your alias is You cannot have forwarding to your alias.

Note: A common bounce message that is received through the forwarding is the "User unknown" bounce.

This may mean that you are not opted-in for the forwarding service or you are not a current active member of ARRL. Please make sure you are opted-in to use the forwarding service and you are a current active member of ARRL.

Example of a bounce message: rejected your message to the following e-mail addresses: ( gave this error:
: Recipient address rejected: User unknown

Note: Average spam messages per alias per day are between 5 - 10 messages. ARRL does not filter aliases on a per user basis. If you find that you are receiving excess of 10 messages per day, please e-mail

Please remember that not all spam going into your e-mail inbox is from the forwarding service. Examination of the header information is needed to find if the message came through the forwarding service.

Note: If you find that mail is slow to be delivered or seems to be completely down please visit to find out what may be happening with our third party provider.

Why doesn’t my address work when I try to test it?

Note: If a message is sent from the same address that is receiving the message (ie your destination address), it is very likely that the message will be silently deleted. This happens to prevent spam from being sent with forged mail headers or to prevent the possibility of the message looping. This filtering is being done by the sending and/or receiving ISPs and NOT by ARRL, therefore ARRL has no control over what occurs with these messages.

Note: Over time ARRL has seen an increasing number of ISP’s implementing these checks, and the responding to the situation in different ways. Some silently drop messages, others might generate a rejection or bounce message. Some have even taken the steps of banning future messages from the same email address or even email server.

For further assistance with your forwarding service, Contact Us.
CHIRP import csv problem DirckB 1 week, 2 days ago
If you create a CSV file without a specific format, CHIRP will not be able to extract the needed data from it
Space-limited inverted V advice needed KA6CHX 1 week, 2 days ago

I would suggest getting it as high as possible. If you have supports 50 feet apart, you can run support ropes roughly 14' long to get the antenna ends about 20' in the air. I'd suggest starting out with about 34' on each side, which is a little more than the usual 66 feet for a flat top dipole.

The SWR bandwidth narrows, but this may be better than the alternatives.

Zak W1VT
ARRL Senior Lab Engineer

ID digital modes mahchem 1 week, 6 days ago
Most likely FT8, which is typically transmitted using USB and a suppressed carrier frequency of 3573 kHz.

It can be decoded with WSJT.

Zak W1VT
ARRL Senior Lab Engineer

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