QLG1 - Simple connection to PC USB Serial port
Hi
?
Can anyone please provide a novice with guidelines, hints or tips to connect a
QLG1 RS232 serial port to a Win 10 PC via a USB serial port ¨C the serial port connector is DB female type. This is just to see and better understand the NMEA sentences the QLG1 sends. Software on the PC is: ¡®VisualGPS¡¯
freeware.
?
Using HyperTerminal the port is definitely receiving something from the QLG1.
?
?
Many thanks in advance and kind regards,
?
?
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I read somewhere, I'm sure it was in the QCX instruction book but maybe not if this thread is going on, that the best way to ensure the coils are in phase is to wind them all from a single piece of wire.? ie, wind the big coil, loop out and twist, wind the first small coil, loop out and twist, second, then third.? Then cut the loops to separate the coils, they will automatically be in phase without thinking and no chance of getting it wrong.
73, Peter GM0EUL
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Thank you all. ?I thought they all had to be wound the same direction..... I have three kits to build yet so this is very helpful. ?Have lost enough gray hair getting previous toroids wound correctly in other kits.? David J. Wilcox K8WPE¡¯s iPad
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On Apr 21, 2019, at 9:30 AM, James Daldry W4JED < jim@...> wrote:
Hi, David
In essence, the 2 windings that drive the Tayloe detector have to
be wound identically. The other 2 are less important. The easiest
way to be sure of this is to wind all 4 the same way, starting at
the inside and ending at the outside, or vice versa. Don't think
left and right, or top and bottom. Think inside and outside,
clockwise and counterclockwise (or anti-clockwise for our friends
of the Blokeish persuasion).
73
Jim W4JED
On 4/21/19 5:01 AM, David Wilcox via
Groups.Io wrote:
Are you saying that the enclosed photo is incorrect? ?It looks
like the phase of the three small windings is reversed from the
large one.
David J. Wilcox K8WPE¡¯s
iPad
On Apr 20, 2019, at 7:30 AM, ohwenzelph via Groups.Io < Ohwenzelph@...>
wrote:
Yep, page 54 ¡°The four windings on T1 must all be
in the same ¡°sense¡±. There are two ways to wind toroids. You
might call them left-handed and right-handed; clockwise and
counter-clockwise; whether the wire goes through the toroid
from top to bottom, or from bottom to top. Whatever you call
it, all the four windings have to be the same, to be sure to
get the phasing to the quadrature sampling detector correct.¡±
In my photo I had very carefully installed the windings with
the three small ones one way but incorrectly with the large
one the opposite and had to redo it .
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Thank you, Hans! At least I need to upgrade the f/w as I am having a ZOO of different versions (oldest 1.00b, 2x 1.00e, 1.00f, 1.00g). And yes, I am using a PA for /M operations, so the modifications are to be done. I will update the Russian translation of an assembly document soon. Regards, Andrey R1CF ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Hans Summers
Sent: Monday, April 22, 2019 9:13 AM
To: [email protected]
Subject: Re: [QRPLabs] New QCX batch ? Hi Andrey The keying envelope modification is detailed here:? On that page you can see a set of 'scope grabs for the "BEFORE" situation and "AFTER" situation. The component values (470R / 1K / 1uF) gave a rather fast envelope rise time of a little under 1ms; the fall time was not unreasonable. With the new component values (150R / 1.2K / 2.2uF) the rise and fall times are both 4-5ms which is ideal.? (It is due to a change in transistor hFE characteristic between the MPS2907 used in the first 500 QCX kits, and the MPS751 currently used).? There is an additional problem which is visible in the "BEFORE" traces, which is that the RF envelope starts abruptly at about 40% of its maximum, not slowly from zero. This is a timing bug in the firmware, and it was resolved in firmware version T1.00g released on 22-Jan-2019.? So... whether to make this modification or not... difficult question! IF you are confident about removing and replacing components without risking damage, and IF you are a perfectionist, you might decide to do it. You'd need the T1.00g firmware too, to make it perfect. OR, if you were going to go QRO with this, driving a big linear, then you'd perhaps want the QCX keying as clean as possible, so decide to do the modification. BUT, in all other cases... I think I would be inclined not to bother. The rather-fast envelope rise time is unlikely to cause objectionable key clicks at QRP Levels. In over 7,000 QCX kits sold I have never heard of any reports of key click issues.? This fast keying envelope actually only came to light because a QCX-80 was in the ARRL lab for review; their QCX-80 has some kind of fault and had NO key-shaping at all, and that was noticeable on their instruments. That is most probably due to an assembly fault (I am still waiting for the unit to arrive here so that I can investigate it), it is not related to the component values; but it did cause me to investigate my own QCX kits here in detail and find the fast rise-time. We later sent ARRL an assembled QCX-40 (including the mod) for testing and they were very happy with the keying envelope. Thanks ARRL! ? On Mon, Apr 22, 2019 at 8:53 AM Andrey (R1CF) <r1cf@...> wrote: Hi Hans, Are these modifications recommended for previous batches? Especially for CW QRQ (30-40 wpm) operation using multiple QCX TRX of different versions? BR, Andrey R1CF ? From: [email protected] [mailto:[email protected]] On Behalf Of Hans Summers
Sent: Sunday, April 21, 2019 11:10 PM
To: [email protected]
Subject: Re: [QRPLabs] New QCX batch ? Hi all I have updated the assembly manual. For all PCB Rev 4 kits shipped after 12-Apr-2019 please make sure that you use the latest manual version, at the top of the list of downloads at ? There are FOUR component changes and these are explained on page 7 of the new manual.? ? On Sat, Apr 20, 2019 at 12:30 AM Hans Summers via Groups.Io <hans.summers=[email protected]> wrote: 1). The latest batch of QCX PCBs arrived here yesterday (Thursday) evening. We shipped out 38 today and will ship out the remaining pending orders on Monday/Tuesday. Apologies for the abnormal delay, for people who have been waiting.. 2). Anyone ordering a QCX from now on will be shipped out within 1 business day as usual. 3). There appears to have been a supplier mistake and a small percentage of the kits have 24-pin sockets instead of 28-pin. I'm not sure what percentage yet.? Since we already sent out a few 10's of kits today, and earlier in the week, some from US stock to US customers... there will be some people such as Lloyd K3ESE who got the 24-pin socket. Please do NOT use bandwidth on this group for this going forward; if yours has a 24-pin socket please email me off-list and I will sort out a replacement for you. For any kits shipped from now onwards we will make sure they are checked and only correct 28-pin sockets sent out.? 4) the new batch of kits incorporates the improvement to the keying envelope that is this modification:? This means, certain component values have changed. The PCB (Rev 4) is the same.? If you started building a kit from the new batch (means any kit shipped on or after 13-Apr-2019) then you need to use the component values mentioned in the modification? I will update the assembly manual to show this, as soon as possible (and Monday at the latest).
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Hi Andrey
The keying envelope modification is detailed here:?
On that page you can see a set of 'scope grabs for the "BEFORE" situation and "AFTER" situation. The component values (470R / 1K / 1uF) gave a rather fast envelope rise time of a little under 1ms; the fall time was not unreasonable. With the new component values (150R / 1.2K / 2.2uF) the rise and fall times are both 4-5ms which is ideal.?
(It is due to a change in transistor hFE characteristic between the MPS2907 used in the first 500 QCX kits, and the MPS751 currently used).?
There is an additional problem which is visible in the "BEFORE" traces, which is that the RF envelope starts abruptly at about 40% of its maximum, not slowly from zero. This is a timing bug in the firmware, and it was resolved in firmware version T1.00g released on 22-Jan-2019.?
So... whether to make this modification or not... difficult question! IF you are confident about removing and replacing components without risking damage, and IF you are a perfectionist, you might decide to do it. You'd need the T1.00g firmware too, to make it perfect. OR, if you were going to go QRO with this, driving a big linear, then you'd perhaps want the QCX keying as clean as possible, so decide to do the modification. BUT, in all other cases... I think I would be inclined not to bother. The rather-fast envelope rise time is unlikely to cause objectionable key clicks at QRP Levels. In over 7,000 QCX kits sold I have never heard of any reports of key click issues.?
This fast keying envelope actually only came to light because a QCX-80 was in the ARRL lab for review; their QCX-80 has some kind of fault and had NO key-shaping at all, and that was noticeable on their instruments. That is most probably due to an assembly fault (I am still waiting for the unit to arrive here so that I can investigate it), it is not related to the component values; but it did cause me to investigate my own QCX kits here in detail and find the fast rise-time. We later sent ARRL an assembled QCX-40 (including the mod) for testing and they were very happy with the keying envelope. Thanks ARRL!
73 Hans G0UPL
73 Hans G0UPL
On Mon, Apr 22, 2019 at 8:53 AM Andrey (R1CF) < r1cf@...> wrote: Hi Hans, Are these modifications recommended for previous batches? Especially for CW QRQ (30-40 wpm) operation using multiple QCX TRX of different versions? BR, Andrey R1CF ? From: [email protected] [mailto:[email protected]] On Behalf Of Hans Summers
Sent: Sunday, April 21, 2019 11:10 PM
To: [email protected]
Subject: Re: [QRPLabs] New QCX batch ? Hi all I have updated the assembly manual. For all PCB Rev 4 kits shipped after 12-Apr-2019 please make sure that you use the latest manual version, at the top of the list of downloads at ? There are FOUR component changes and these are explained on page 7 of the new manual.? ? On Sat, Apr 20, 2019 at 12:30 AM Hans Summers via Groups.Io <hans.summers=[email protected]> wrote: 1). The latest batch of QCX PCBs arrived here yesterday (Thursday) evening. We shipped out 38 today and will ship out the remaining pending orders on Monday/Tuesday. Apologies for the abnormal delay, for people who have been waiting.. 2). Anyone ordering a QCX from now on will be shipped out within 1 business day as usual. 3). There appears to have been a supplier mistake and a small percentage of the kits have 24-pin sockets instead of 28-pin. I'm not sure what percentage yet.? Since we already sent out a few 10's of kits today, and earlier in the week, some from US stock to US customers... there will be some people such as Lloyd K3ESE who got the 24-pin socket. Please do NOT use bandwidth on this group for this going forward; if yours has a 24-pin socket please email me off-list and I will sort out a replacement for you. For any kits shipped from now onwards we will make sure they are checked and only correct 28-pin sockets sent out.? 4) the new batch of kits incorporates the improvement to the keying envelope that is this modification:? This means, certain component values have changed. The PCB (Rev 4) is the same.? If you started building a kit from the new batch (means any kit shipped on or after 13-Apr-2019) then you need to use the component values mentioned in the modification? I will update the assembly manual to show this, as soon as possible (and Monday at the latest).
|
Hi Hans, Are these modifications recommended for previous batches? Especially for CW QRQ (30-40 wpm) operation using multiple QCX TRX of different versions? BR, Andrey R1CF ?
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Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Hans Summers
Sent: Sunday, April 21, 2019 11:10 PM
To: [email protected]
Subject: Re: [QRPLabs] New QCX batch ? Hi all I have updated the assembly manual. For all PCB Rev 4 kits shipped after 12-Apr-2019 please make sure that you use the latest manual version, at the top of the list of downloads at ? There are FOUR component changes and these are explained on page 7 of the new manual.? ? On Sat, Apr 20, 2019 at 12:30 AM Hans Summers via Groups.Io <hans.summers=[email protected]> wrote: 1). The latest batch of QCX PCBs arrived here yesterday (Thursday) evening. We shipped out 38 today and will ship out the remaining pending orders on Monday/Tuesday. Apologies for the abnormal delay, for people who have been waiting.. 2). Anyone ordering a QCX from now on will be shipped out within 1 business day as usual. 3). There appears to have been a supplier mistake and a small percentage of the kits have 24-pin sockets instead of 28-pin. I'm not sure what percentage yet.? Since we already sent out a few 10's of kits today, and earlier in the week, some from US stock to US customers... there will be some people such as Lloyd K3ESE who got the 24-pin socket. Please do NOT use bandwidth on this group for this going forward; if yours has a 24-pin socket please email me off-list and I will sort out a replacement for you. For any kits shipped from now onwards we will make sure they are checked and only correct 28-pin sockets sent out.? 4) the new batch of kits incorporates the improvement to the keying envelope that is this modification:? This means, certain component values have changed. The PCB (Rev 4) is the same.? If you started building a kit from the new batch (means any kit shipped on or after 13-Apr-2019) then you need to use the component values mentioned in the modification? I will update the assembly manual to show this, as soon as possible (and Monday at the latest).
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Officers Gunther Toody ( Joe E. Ross ) and Francis Muldoon ( Fred Gwynne )
Who could ever forget those two guys ?!
72 / 73,
Bill, N4QA
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I just downloaded the corrected assembly manual and I'm so glad I waited to print it out. Thank you for the updated version. I'd missed the note that it would be coming.
I, being an old fellow, remembered a very old TV show that was popular when I was much younger, before we had a color television set. The show was a Police Comedy/drama entitled "Car 54 Where Are You?". Noticing the C54 is not to be installed I couldn't help equating the two. Hope you get a chuckle out of my thoughts.
On Sunday, April 21, 2019, 4:36:06 PM EDT, John AE5X <ae5x@...> wrote:
For 8 or 9 milliseconds I thought the title said 'QSX"...
--
John AE5X
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Hi Alan,
My understanding is that known good AT428 code exists to encode FT8. JS8 uses the same format with a different sync sequence and somewhat different encoding. From what I can tell the pieces are essentially all there. Just gotta glue them together? Or as one of my friends put it, it is all SMOP [Small matter of programming :)].
I am thinking your ASCII keyboard sends serial characters to a pin on the QCX and as long as the QCX buffer has characters they are encoded as packets and sent. Simple.
No transceive for now.
John
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On Sun, 21 Apr 2019, Alan de G1FXB via Groups.Io wrote: Hi John,
FT8 / JS8 built into a QCX is an interesting challenge.
More so depending if your development aims to maintain backward CW
Transceive capability or new Digimode Transmit only?
As it stands on transmit? the QCX knows little about the outside world
beyond what's provided by the straight / paddle key inputs which is
coincidently shared with an optionally connected GPS.
When you say:-
"? You can also easily experiment with remote JS8 data collection sorts of
things by just sending ASCII to the remote QCX. "
If the "ASCII characters" are not already present in the NMEA Sentence,
what's the route in to the ATmega328?
I'll be interested in the QCX encode link when you find it.
Alan
On 20/04/2019 16:33, jmh6@... wrote:
Hi All,
?? I have an interest in making QCX and other QRP-LABS products
send JS8.
?? The idea being that you send ASCII characters to the QCX and
it forms JS8 packets and sends them as long as there are
characters in the buffer.
?? I that way your typing goes out maybe a different antenna and
you can receive JS8 with your normal XCVR and computer at the
same time :).
?? You can also easily experiment with remote JS8 data
collection sorts of things by just sending ASCII to the remote
QCX.
?? There is source code already on the web that runs in the QCX
though off hand I don't remember where and haven't compiled and
run it myself yet.
?? Generating JS8 directly with the 5351 should give a very
clean RF signal since the RF is created directly by that chip.
?? Is anyone else interested?
?? John
On Sat, 20 Apr 2019, Andy Brilleaux via Groups.Io wrote:
On Sat, Apr 20, 2019 at 12:46 PM, Alan G4ZFQ wrote:
????? Serves you right:-) Built for Windows so you
can have some of
????? the updating pain we have?
Ironically, pre-built binaries for Raspberry Pi's
(including v2.01) work
fine ;-)
But for those of us using our daily work machines,
on stable and LTS support
code bases were completely disowned in favour of OS
versions that are barely
out of beta testing.
- Andy -
|
For 8 or 9 milliseconds I thought the title said 'QSX"...
--
John AE5X
|
Hi all
I have updated the assembly manual. For all PCB Rev 4 kits shipped after 12-Apr-2019 please make sure that you use the latest manual version, at the top of the list of downloads at ?
There are FOUR component changes and these are explained on page 7 of the new manual.?
73 Hans G0UPL
On Sat, Apr 20, 2019 at 12:30 AM Hans Summers via Groups.Io <hans.summers= [email protected]> wrote:
Hi all
1). The latest batch of QCX PCBs arrived here yesterday (Thursday) evening. We shipped out 38 today and will ship out the remaining pending orders on Monday/Tuesday. Apologies for the abnormal delay, for people who have been waiting..
2). Anyone ordering a QCX from now on will be shipped out within 1 business day as usual.
3). There appears to have been a supplier mistake and a small percentage of the kits have 24-pin sockets instead of 28-pin. I'm not sure what percentage yet.?
Since we already sent out a few 10's of kits today, and earlier in the week, some from US stock to US customers... there will be some people such as Lloyd K3ESE who got the 24-pin socket. Please do NOT use bandwidth on this group for this going forward; if yours has a 24-pin socket please email me off-list and I will sort out a replacement for you.
For any kits shipped from now onwards we will make sure they are checked and only correct 28-pin sockets sent out.?
4) the new batch of kits incorporates the improvement to the keying envelope that is this modification:? This means, certain component values have changed. The PCB (Rev 4) is the same.? If you started building a kit from the new batch (means any kit shipped on or after 13-Apr-2019) then you need to use the component values mentioned in the modification? I will update the assembly manual to show this, as soon as possible (and Monday at the latest).
73 Hans G0UPL? ?
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Re: DX-ing with QRP - possible?
Please send details of the antet
Mark Lunday
832-252-4520
704-904-4997
mlunday@...
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Just adding + 1 to all the comments saying "yes, with a good antenna."? The old saw is true, "If you have a hundred dollars to build your station, spend at least ninety bucks on the antenna."? I have a quiet rural location in a mountain cove with the ground
sloping WSW -- in my QTH this is straight towards VK/ZL.? I put up a two element beam for 40m at 65 feet (wire, fixed WSW).? The antenna is doing all the work.? I have regular QRP CW DX contacts in Oceania, and today a VK6 (!).? 18000km on seven watts.? Definitely
possible, and definitely fun.
73
--Ron
K0EIA
?
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Re: DX-ing with QRP - possible?
Just adding + 1 to all the comments saying "yes, with a good antenna."? The old saw is true, "If you have a hundred dollars to build your station, spend at least ninety bucks on the antenna."? I have a quiet rural location in a mountain cove with the ground sloping WSW -- in my QTH this is straight towards VK/ZL.? I put up a two element beam for 40m at 65 feet (wire, fixed WSW).? The antenna is doing all the work.? I have regular QRP CW DX contacts in Oceania, and today a VK6 (!).? 18000km on seven watts.? Definitely possible, and definitely fun.
73
--Ron
K0EIA
?
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Hi Al
That doesn't look like any of the other resistors in the QCX kit. It that arrived in the kit bag then it's just something that fell in by mistake somewhere along the line... you can safely ignore it!
73 Hans G0UPL? ?
Here is a picture of the resistor.? It measures 38.5 ohms.?
Al?
Hi Al
The colour codes are 5-band. Did you measure 38 ohms? That is the while 5-band code?
73 Hans G0UPL? Is there a reason I am left with one resistor that measures 38 ohms (Orange/White/Black)???
All the white spacers in the kit will accept the screw in one end.? The screw wont fit in the other end of the spacer.?
Al Lipinski?
Hi Al
Yes. Non-critical. The most non-critical place for the low one would be C21 or C22.
73 Hans G0UPL? ?
Section 3.16 of manual?
Install 1uF capacitors (3).??
I measured two caps at 0.978 uF I measured one cap at 0.775uF? ?.? About - 22% tolerance Should I install the low cap?????
Thanks,?
-- Al Lipinski
--
Al Lipinski
--
Al Lipinski
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The answer is, of course...Yes ! The stock QCX-17 hears very well on the ten meter band too !
The stock QCX-17 is tuned to 28075.1 kHz for this little event.
Quite by chance and, once again, it is five-miles-away KN4MKX doing the honors !
I love this radio !
72 / 73,
Bill, N4QA
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Hi Alan,
The Racal rig is a PRM4031 and the fault was a Tant cap going s/c
and then taking out the TIP32A series 9v regulator all on the
analogue transceiver board. The manual on the VMARS group is
currently not available due to copyright issues but I got a PDF of
the board from another source. Just waiting for a new TIP32A from
a local who has one but can't find it. Might replace with a TIP125
Darlington power transistor, hfe gain of 1000 instead of the 25 of
original but shouldn't cause any problems in this application.
The rig is perfect for digi modes, no VFO knob to accidentally
nudge and low power setting of 2 watts.
Many thanks for your help.
Geoff
On 21/04/2019 15:02, Alan de G1FXB via
Groups.Io wrote:
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Hi Geoff,
Hope I didn't infer WSPR was a Communication mode..... :-)
I did a? cut & paste of the WSJT suite description from their
homepage, as WSPR was lumped in descriptions it that maybe didn't
specifically say it wasn't......
They will have to fight their own corner, if that's contentious.
O/T for here,
? Could be a VRC Brick.... or alternatively a Racal 320 by chance,
I don't know how far you are into the faulfinding.
Synth lock or funnies / squidging on the audio? / progressing to,
with time / or just plain No Go?
By way of a FYI, there are a few ex REME guys on VMARS
if it's of any use.....
Alan
On 20/04/2019 10:24, geoff M0ORE via
Groups.Io wrote:
Hi Alan,
I have used WSPR many times and have had reports from most
continents ( not Antarctica ) using a few watts. The Racal
ex-military rig I use for digital modes is currently
undergoing a faulting issue.? As you rightly say it is only a
one way mode so not used for communication. I was surprised to
see you refer to it in your previous mail as a communication
mode.
HAGWE
Geoff
On 20/04/2019 03:46, Alan de G1FXB
via Groups.Io wrote:
Hi Geoff,
(From the WSJT / WSPR modes home page.
Description
WSPR implements a protocol designed for
probing potential propagation paths with low-power
transmissions.? Normal transmissions carry a station's
callsign, Maidenhead grid locator, and transmitter power in
dBm.? The program can decode signals with S/N as low as -28
dB in a 2500 Hz bandwidth.? Stations with internet access
can automatically upload their reception reports to a
central database called WSPRnet, which includes a mapping
facility.? To see a live version of the map pictured at top
right, click here.)
My take is....
WSPR is useful as an own use propagation tool, I have used it
since approx 20I0 having seen the work of W3PM / GM4YRE (?)
In all that time I have never used the WSPR mode intentionally
for the purposes of communication for which it is not suited.
WSPR was conceived / is used as a one way RF based uplink mode
having reserved allocations on specified Amateur Bands, with
confirmation back from a remote RX station to the TX station
provided via IP / internet?
As a by-product of acepting these terms of use, a database
entry is available for free use to anyone having an interest,
not necessarily restricted to licenced Radio Amateurs.
Alan
On 19/04/2019 23:46, geoff M0ORE
via Groups.Io wrote:
Alan, is WSPR a communication mode?
|
Re: DX-ing with QRP - possible?
Jim / KJ7AOO,
QRP as a means to doing DX, the basic answer is of course.? There have been many who have
done DX-CC using QRP so can it be done has been answered.
Will the dipole MFJ1774B do that (assuming the QCX is a 40M version), likely yes.? That said?
if placed high enough it will work well.? ?How high it high?? More than 30ft, and more like 60FT.
Also a dipole is a directional antenna more or less so which way its oriented may determine
who you can talk to.
Most of my HF experience is at low power and high power means 100W to me.? Antennas are
the means and the better the antenna the better the result.? Be willing to experiment and try
different things.? In the end its not power, but propagation.
Allison
|
Hi John,
FT8 / JS8 built into a QCX is an interesting challenge.
More so depending if your development aims to maintain backward CW
Transceive capability or new Digimode Transmit only?
As it stands on transmit? the QCX knows little about the outside
world beyond what's provided by the straight / paddle key inputs
which is coincidently shared with an optionally connected GPS.
When you say:-
"? You can also easily experiment with
remote JS8 data collection sorts of things by just sending ASCII
to the remote QCX.
"
If the "ASCII characters" are not already present in the NMEA
Sentence, what's the route in to the ATmega328?
I'll be interested in the QCX encode link when you find it.
Alan
toggle quoted message
Show quoted text
Hi All,
?? I have an interest in making QCX and other QRP-LABS products
send JS8.
?? The idea being that you send ASCII characters to the QCX and it
forms JS8 packets and sends them as long as there are characters
in the buffer.
?? I that way your typing goes out maybe a different antenna and
you can receive JS8 with your normal XCVR and computer at the same
time :).
?? You can also easily experiment with remote JS8 data collection
sorts of things by just sending ASCII to the remote QCX.
?? There is source code already on the web that runs in the QCX
though off hand I don't remember where and haven't compiled and
run it myself yet.
?? Generating JS8 directly with the 5351 should give a very clean
RF signal since the RF is created directly by that chip.
?? Is anyone else interested?
?? John
On Sat, 20 Apr 2019, Andy Brilleaux via Groups.Io wrote:
On Sat, Apr 20, 2019 at 12:46 PM, Alan
G4ZFQ wrote:
????? Serves you right:-) Built for Windows so you can have some
of
????? the updating pain we have?
Ironically, pre-built binaries for Raspberry Pi's (including
v2.01) work
fine ;-)
But for those of us using our daily work machines, on stable and
LTS support
code bases were completely disowned in favour of OS versions
that are barely
out of beta testing.
- Andy -
|
Hi Geoff,
Hope I didn't infer WSPR was a Communication mode..... :-)
I did a? cut & paste of the WSJT suite description from their
homepage, as WSPR was lumped in descriptions it that maybe didn't
specifically say it wasn't......
They will have to fight their own corner, if that's contentious.
O/T for here,
? Could be a VRC Brick.... or alternatively a Racal 320 by chance, I
don't know how far you are into the faulfinding.
Synth lock or funnies / squidging on the audio? / progressing to,
with time / or just plain No Go?
By way of a FYI, there are a few ex REME guys on VMARS
if it's of any use.....
Alan
On 20/04/2019 10:24, geoff M0ORE via
Groups.Io wrote:
toggle quoted message
Show quoted text
Hi Alan,
I have used WSPR many times and have had reports from most
continents ( not Antarctica ) using a few watts. The Racal
ex-military rig I use for digital modes is currently undergoing
a faulting issue.? As you rightly say it is only a one way mode
so not used for communication. I was surprised to see you refer
to it in your previous mail as a communication mode.
HAGWE
Geoff
On 20/04/2019 03:46, Alan de G1FXB
via Groups.Io wrote:
Hi Geoff,
(From the WSJT / WSPR modes home page.
Description
WSPR implements a protocol designed for
probing potential propagation paths with low-power
transmissions.? Normal transmissions carry a station's
callsign, Maidenhead grid locator, and transmitter power in
dBm.? The program can decode signals with S/N as low as -28 dB
in a 2500 Hz bandwidth.? Stations with internet access can
automatically upload their reception reports to a central
database called WSPRnet, which includes a mapping facility.?
To see a live version of the map pictured at top right, click
here.)
My take is....
WSPR is useful as an own use propagation tool, I have used it
since approx 20I0 having seen the work of W3PM / GM4YRE (?)
In all that time I have never used the WSPR mode intentionally
for the purposes of communication for which it is not suited.
WSPR was conceived / is used as a one way RF based uplink mode
having reserved allocations on specified Amateur Bands, with
confirmation back from a remote RX station to the TX station
provided via IP / internet?
As a by-product of acepting these terms of use, a database entry
is available for free use to anyone having an interest, not
necessarily restricted to licenced Radio Amateurs.
Alan
On 19/04/2019 23:46, geoff M0ORE
via Groups.Io wrote:
Alan, is WSPR a communication mode?
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Peter GM0EUL
David Wilcox K8WPE
Andrey (R1CF)
Alan de G1FXB