Questions tagged [dx]

Long distance radio communications, propagated through the ionosphere or troposphere

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Any hints on working RTTY split?

I tried to work TX5S yesterday on RTTY yesterday. They were running split, which I haven't done before on RTTY. I use fldigi along with an IC-7300. I tried two methods. First, using the "lock&...
gschro's user avatar
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2 votes
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What are the column headings for eg RSGB live dx cluster?

The Web page for RSGB dx cluster doesn't have column headings. May be dumb question but what are they?
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2 votes
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HF vertical 1/4w antenna on a tin roof?

I would like to build a 1/4 ~ vertical antenna on my tin roof for a ground plane. Does the angle of the roof matter? Should the antenna be vertical, or perpendicular to the roof? Would it be better ...
marc's user avatar
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communicating with France from Oregon

Newbie ham here. My stepdaughter in France is interested in off-grid communication with us in Oregon, and so I am looking into what that would take. If I knew what frequency bands would be best I ...
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4 votes
2 answers
420 views

How to apply for the ARRL WAC award?

I've managed (thank you FT8!) to have LOTW-confirmed contacts with the 6 applicable continents. However, on reading the ARRL page for the WAC award it says that you have to apply on paper and that ...
QuantumMechanic's user avatar
4 votes
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What is proper procedure for asking for "distant" contacts on 2m FM on simplex?

As a new ham, just for fun, I'm planning to hike up to the local high point (which while not high in an absolute sense does have a commanding view of the surroundings) with my 5 watt FT-4XR and a slim ...
QuantumMechanic's user avatar
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1 answer
2k views

How Does the Performance of an Inverted V Dipole Compare to a Linear Dipole?

The NEC4.2 comparison in the answer below shows one example, for a practical set of installation conditions.
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MW AM reception improvements?

Most AM receivers use Envelope detection. Historically this was simple. PLL-based systems are slightly better at low carrier-to-noise levels. Would there be any SNR advantage if each sideband was ...
Autistic's user avatar
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Mobile Phone offline maindenhead or mgrs web app [closed]

I read an article in a magazine or online about a (.gov, I think) site which showed two, four to six character sequences in a mobile phone browser window. The letters from left to right indicated ...
user38537's user avatar
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5 votes
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What is propagation like when there are no sunspots?

Am considering getting my license again after raising kids, and wondering if there is any point in HF operation besides local chats — that is, what is propagation like when there are no sunspots?
nzc's user avatar
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Is calling the Palmer Station (Antarctica) via IRLP without prior arrangements acceptable practice?

Until I can get an HF rig, I've been using my HT through a local repeater IRLP node. I've successfully made a few contacts doing that, but I recently noticed that Palmer Station in Antartica has an ...
penguin359's user avatar
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2 m meteor scatter FM voice freq?

What frequency should I use to try and make meteor scatter contacts on 2m FM tonight, with a nice meteor storm coming?
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12 votes
5 answers
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What is the definition of DX?

I always believed that DX meant out of one’s own country, and in the continental US that can be pretty far. However, tooling around on the bands I’ll often hear people calling DX inside the US receive ...
Adam Davis's user avatar
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11 votes
2 answers
2k views

Why do some DX listen on a different frequency than they transmit on?

I've heard some DX indicate "CQ up 5" for instance, indicating that they are listening on a different frequency than they are transmitting on. What are the reasons one might want to do that?
Adam Davis's user avatar
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