The recent post from KE8AKW Nick, plus previous posts from WB4APR Bob got me thinking... just what would be required to transmit PSK-31 to NO-84?
In the Amateur Radio world, I'm sure that I'm in the minority, but I don't even OWN an HF rig. My primary interests are the higher frequencies, including satellite telemetry and the other various data modes. Practically the only time I transmit a signal is packet to the ISS. I'm much more active with SDR's and a computer than I am with conventional radios.
But all the data modes interest me, and perhaps others. If someone would be kind enough to list what hardware might be required for the transmit side of NO-84's PSK-31 capability, it sure would be appreciated. (low-cost options preferred!)
73!
-Scott, K4KDR Montpelier, VA USA
El 26/11/15 a las 04:45, Scott escribió:
The recent post from KE8AKW Nick, plus previous posts from WB4APR Bob got me thinking... just what would be required to transmit PSK-31 to NO-84?
In the Amateur Radio world, I'm sure that I'm in the minority, but I don't even OWN an HF rig. My primary interests are the higher frequencies, including satellite telemetry and the other various data modes. Practically the only time I transmit a signal is packet to the ISS. I'm much more active with SDR's and a computer than I am with conventional radios.
But all the data modes interest me, and perhaps others. If someone would be kind enough to list what hardware might be required for the transmit side of NO-84's PSK-31 capability, it sure would be appreciated. (low-cost options preferred!)
Dear Scott,
I have yet to try to work NO-84, so hopefully others can provide better impressions of the uplink power and antenna needed.
One thing that you might want to consider is getting a 10m-only transceiver. There are several inexpensive ones from Chinese manufacturers, such as the Anytone AT-5555. These will cost around 100$-150$ and put out up to 20W or so. Definitely an option to consider, because the cheapest all-band HF tranceiver now is probably the FT-817ND, with a considerably higher price tag, and it will put out only 5W.
73,
Dani M0HXM/EA4GPZ.
Quoting Daniel Estévez who wrote on Thu 2015-11-26 at 09:44:
But all the data modes interest me, and perhaps others. If someone would be kind enough to list what hardware might be required for the transmit side of NO-84's PSK-31 capability, it sure would be appreciated. (low-cost options preferred!)
One thing that you might want to consider is getting a 10m-only transceiver. There are several inexpensive ones from Chinese manufacturers, such as the Anytone AT-5555. These will cost around 100$-150$ and put out up to 20W or so.
I don't know how easy it is to input audio from PSK31 software into such a radio. Holding the mic up to your speaker may be a good start.
And to find a cheap 10 meter vertical: have a look at CB antennas. Most will cover 28 MHz.
I did the experiment with transmitting to NO-84 using a dipole in the attic and found I needed 20 watts on HF, see http://idefix.net/~koos/newsitem.cgi/1433017519
Koos van den Hout PD4KH
On 25-Nov-15 2345, Scott wrote:
... just what would be required to transmit PSK-31 to
NO-84?
Per WB4APR, I got the program "PSKDoppler". That one drives my Tigertronics-SignaLink with the data to Drive the K3. The K3 goes to the weak-link, namely my 300-foot dipole, ladder-line-fed at 85 feet.
The antenna pattern just isn't too useful for continuous access, in a given pass, to PSAT.
The program DopplerPSK on the other hand is nifty. Keeps the TX freq quite stable to the uplink. Since the Downlink on 70cm is FM, I don't seem to have to worry about Doppler corrections on that downlink. Pretty neat indeed.
The difficulties I have are in not being strong enough, often with 90 watts, to bring-up PSAT. If the downlink is activated by her beacon, then I get in quite well.
In my case I need a vertical for 10m.
This all may not be your minimal requirement. However, you can see what another newbie to PSAT is trying.
In the Amateur Radio world, I'm sure that I'm in the minority, but I don't even OWN an HF rig.
A comment here. As a T-Shirt which I bought for my grand-daughter says, "When All Else Fails ... Amateur Radio." IIRC, Sparks has a Key and wire antenna on that "T".
HF is useful to reach planet-wide in emergencies of a larger scale. With today's digital modes like JT65, I have made VK on a half-watt. ..The need for good CW is, to me, self-explanatory. In '58 when I started CW was better than my nose touching the SHure-Mic and getting zapped all the dang time. CW should be a skill set required. And mechanical CW, not a digital representation.
This is Thanksgiving, please don't carpet-bomb me for the last paragraph, hi hi.
Happy THANKSGIVING fellow Satellite-People.
My primary interests are the higher ....
yes, mine too. But not all-inclusive
participants (4)
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Bob KD7YZ -
Daniel Estévez -
Koos van den Hout -
Scott