[pskmail] Re: 17m PSKMail
- From: G6CKR <radio@xxxxxxxxxxxxxxx>
- To: pskmail@xxxxxxxxxxxxx
- Date: Mon, 23 Jan 2012 17:23:39 +0000
Some people would argue that 1500Hz is standard and 1000 non but that is
another story.
OK if the wiki says the frequency is 10.148 MHz without any other
qualification then it is the actual TX /RX frequency.
If your radio is set to 10.148 MHz then the signal will be at the zero
point of the waterfall to the far left and given the default low cut off
is around 300 HZ you will see nothing.
To see the signal at the 1000Hz point you need to set the radio to
10.147 MHZ. giving 10.147 + 1KHz = 10.148MHz
For 1500Hz set the radio to 10.1465 MHZ and the signal will be at 1500Hz
on the waterfall. If you discover that your radio has a sweet spot for
TX at say 1150Hz then you just do the maths accordingly.
All the above assume the use of upper sideband of course.
73 Roger
On 23/01/12 15:34, Bernard Dekok wrote:
> Hi Roger,
> I understand that.
> But, if the center frequency is advertised on the Wiki Server page as
> 10.148 MHz USB, with no further mentioning of the non-standard 1500HZ
> offset, then everybody will have a hard time connecting to his
> server....Not so ?
>
> Bernie,
> KC9SGV
>
> On Mon, Jan 23, 2012 at 7:49 AM, G6CKR <radio@xxxxxxxxxxxxxxx
> <mailto:radio@xxxxxxxxxxxxxxx>> wrote:
>
> The audio frequency is more to suit the passband of the radio.
> 1000 Hz does make the calculations a bit easier than 1500 of course.
> As long as the combination of dial and Audio frequency add up to the
> same actual TX / RX Frequency and your radio is happy with that audio
> frequency chosen then all should be well.
> 73 Roger G6CKR
> On 23/01/12 13:39, Bernard Dekok wrote:
> > Hi Josh,
> >
> > Am I missing something here ?
> > I thought all audio frequency centers for PSKMail is 1000 HZ and not
> > 1500 HZ ?
> > (The standard offset.)
> > This 1000 HZ offset works with KB2PNM's server.
> > Might be the reason why I can never connect to your server.....
> >
> > Bernie,
> > KC9SGV
> > Chicago.
> >
> >
> >
> > On Sun, Jan 22, 2012 at 2:45 PM, Josh Housey <kg9bo@xxxxxxxxx
> <mailto:kg9bo@xxxxxxxxx>
> > <mailto:kg9bo@xxxxxxxxx <mailto:kg9bo@xxxxxxxxx>>> wrote:
> >
> > All,
> >
> > I had a quiet weekend and was trying out the 7200 and PSKMail with
> > different bands. I primarily did it to ensure I had it set and was
> > able to use the "frequency" hopping function like other servers do
> > and maybe to use it. Unfortunately, I found the antenna is not
> doing
> > as well as expected on other bands. 20m works for SWRs but
> > inefficient with power (adequate sound card audio). Somewhat
> similar
> > with 40m and 80 isn't very good at all. There are likely
> reasons for
> > it (coax, grounding, etc). I am satisfied it works well on 30m. I
> > found that it works just as well for 17m. I didn't get a chance to
> > try 12 or 10m. All of its done with the tuner in line but 30m/17
> > (20m as well) don't have to adjust to get lower....
> >
> > Which brings a question and that being is that is there an
> interest
> > in having PSKMail activity on 17m? The benefit I can see (30m
> shares
> > it as well) is that its a "WARC" band and not susceptible to the
> > multitude of contests/other activity that exists on 20m. It could
> > even be a backup for 20m for any number of purposes. Anyway, my
> > server is frequency scanning between 10.146.5 (audio center
> 1500hz)
> > = 10.148Mhz and 18.109.5 (audio 1500) = 18.111Mhz. Is this a good
> > frequency if there is interest or is there another suggestion? I
> > have found both to be relatively quiet and away from PSK and
> > possibly RTTY on the band.
> >
> > If anyone wants to try 17m, my server is scanning 30m for the
> first
> > three times and then switching and transmitting/receiving on
> 17m two
> > times for the last minutes. Since 17m isn't much of a night band,
> > its only on until sunset, where I am then monitoring 30m all
> > night. I would have liked to do 40m/80m there but not working too
> > well (may look into figuring why this spring/summer).
> >
> > 73
> > Josh, AB9FT
> >
> >
>
>
>
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