Date   

Re: Analog Devices Pluto

Charles Brain <chbrain@...>
 

Hi All,

I did a presentation on the ADALM-PLUTO at BATC CAT17
It is available on either the BATC YouTube channel or you can
see it on mine
https://www.youtube.com/watch?v=idW3ysqvMno

The next issue of the BATC CQ-TV magazine will have a written article
about the unit.

- Charles G4GUO


Re: Analog Devices Pluto

Dr. David Kirkby (Kirkby Microwave Ltd) <drkirkby@...>
 

On 10 October 2017 at 20:27, Christopher Bartram cbartram@... [ukmicrowaves] <ukmicrowaves@...> wrote:
I had an email from a components distributor suggesting that I order one
of these new ADI evaluation/learning modules. I might well do just that.
Go to <www.analog.com> and search on 'Pluto'.

Based on a single chip direct-conversion up and down conversion, and at
around £75 delivered, this unit looks as though it could become a
standard tool for learning about software defined receivers and
transmitters.

Chris,

I see a US price of $149. That's a lot more than £75. Where do you see £75 delivered?

I will tell you a funny story. A friend of mine by the name of Peter, who has unfortunatly passed away now, run a hardware shop. A guy came in one day and wanted to buy something - I forget what it was. Peter said it was £6. The customer said that was expensive, as Fred in another shop sells them for £5. So Peter suggested he went to Fred. The customer replied that Fred did not have any. So Peter said, "When I don't have any, they are £3".

It is possible these are £75 when out of stock, but more when in stock?

 

73

Chris GW4DGU

Dave, G8WRB.


Re: Analog Devices Pluto

Neil Smith G4DBN
 

Farnell lead time says August 2018. Oh dear...


On 10/10/2017 23:26, Neil neil@... [ukmicrowaves] wrote:
 

I note that Analog site says they are on back order, and Farnell have no stock either. Arrow and Digikey also have none.

At the price, it is worth taking a punt on one just to play with, even if it won't cover 5.7GHz.




Re: Analog Devices Pluto

Neil Smith G4DBN
 

Hi Derek, I was on the cusp of ordering a B205mini-i when I saw the "student" offer on the Pluto. Not totally convinced, but one hell of a saving for some initial experiments and a way to refamiliarise myself with GNUradio.  Notes say some early versions have a 9364, and can therefore be unlocked to cover up to 6GHz, but if the later ones have the 9363, that won't be possible I guess? I note that Analog site says they are on back order, and Farnell have no stock either. Arrow and Digikey also have none.

At the price, it is worth taking a punt on one just to play with, even if it won't cover 5.7GHz.

What do you find the real-world noise figure is on the B200mini receiver?  Spec says <8dB, and I've seen 5dB quoted at 2.4GHz.

Neil G4DBN


On 10/10/2017 21:32, Derek Kozel derek.kozel@... [ukmicrowaves] wrote:
 
Hi Chris,

I had a chance to talk with Analog Devices at GNU Radio Conference last month where they were, among many things, showing off the PlutoSDR. It is a simple but effective transceiver. Anyone using it should add external band pass filters to improve its performance.

I use the B200mini which uses the same Analog Devices 936x family transceiver chip as the core of my microwave and VHF/UHF radio work. I tend to use a bandwidth of about 1 MHz and then use DSP to handle pulling individual signals out of the passband. I'd be very happy to talk with anyone interested in using an SDR like this as part of their setup. My daily work is building and programming these radios. The Pluto, LimeSDR, USRPs, and other similar radios are just going to grow more and more common and it's definitely a technology we should make more use of.

By the way, the Pluto ships by default with a frequency range of 325 - 3800 MHz, but some or possibly all can be upgraded to a range of 70 - 6000 MHz. The effective tuning accuracy out of the box is sub 1 Hz with a few ppm accuracy. Unfortunately the PlutoSDR does not have an external reference feature, but some handy soldering could replace the reference TCXO...
https://wiki.analog.com/university/tools/pluto/users/customizing#updating_to_the_ad9364

Regards,
Derek

On Tue, Oct 10, 2017 at 8:27 PM, Christopher Bartram cbartram@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

I had an email from a components distributor suggesting that I order one
of these new ADI evaluation/learning modules. I might well do just that.
Go to <www.analog.com> and search on 'Pluto'.

Based on a single chip direct-conversion up and down conversion, and at
around £75 delivered, this unit looks as though it could become a
standard tool for learning about software defined receivers and
transmitters. The module operates over about the 380MHz to 6GHz band, so
it's of particular interest to members of this Group. A very quick
initial scan of the (already fairly large) available literature gives
the impression that the minimum channel width is 200kHz, with a similar
bandwidth, and frequency step, but there's already a way of
circumventing the frequency step size, and I suspect ways could be found
to reduce the bandwidth.

Even with the limitations, this is a very useful approach to generating
and receiving signals on all of our bands from 432 to 3400 MHz, and it
would be worth people with more advanced SDR/software skills than mine,
taking a careful look.

73

Chris GW4DGU




Re: Analog Devices Pluto

Derek Kozel <derek.kozel@...>
 

Hi Chris,

I had a chance to talk with Analog Devices at GNU Radio Conference last month where they were, among many things, showing off the PlutoSDR. It is a simple but effective transceiver. Anyone using it should add external band pass filters to improve its performance.

I use the B200mini which uses the same Analog Devices 936x family transceiver chip as the core of my microwave and VHF/UHF radio work. I tend to use a bandwidth of about 1 MHz and then use DSP to handle pulling individual signals out of the passband. I'd be very happy to talk with anyone interested in using an SDR like this as part of their setup. My daily work is building and programming these radios. The Pluto, LimeSDR, USRPs, and other similar radios are just going to grow more and more common and it's definitely a technology we should make more use of.

By the way, the Pluto ships by default with a frequency range of 325 - 3800 MHz, but some or possibly all can be upgraded to a range of 70 - 6000 MHz. The effective tuning accuracy out of the box is sub 1 Hz with a few ppm accuracy. Unfortunately the PlutoSDR does not have an external reference feature, but some handy soldering could replace the reference TCXO...
https://wiki.analog.com/university/tools/pluto/users/customizing#updating_to_the_ad9364

Regards,
Derek

On Tue, Oct 10, 2017 at 8:27 PM, Christopher Bartram cbartram@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

I had an email from a components distributor suggesting that I order one
of these new ADI evaluation/learning modules. I might well do just that.
Go to <www.analog.com> and search on 'Pluto'.

Based on a single chip direct-conversion up and down conversion, and at
around £75 delivered, this unit looks as though it could become a
standard tool for learning about software defined receivers and
transmitters. The module operates over about the 380MHz to 6GHz band, so
it's of particular interest to members of this Group. A very quick
initial scan of the (already fairly large) available literature gives
the impression that the minimum channel width is 200kHz, with a similar
bandwidth, and frequency step, but there's already a way of
circumventing the frequency step size, and I suspect ways could be found
to reduce the bandwidth.

Even with the limitations, this is a very useful approach to generating
and receiving signals on all of our bands from 432 to 3400 MHz, and it
would be worth people with more advanced SDR/software skills than mine,
taking a careful look.

73

Chris GW4DGU



Analog Devices Pluto

Christopher Bartram <cbartram@...>
 

I had an email from a components distributor suggesting that I order one of these new ADI evaluation/learning modules. I might well do just that. Go to <www.analog.com> and search on 'Pluto'.

Based on a single chip direct-conversion up and down conversion, and at around £75 delivered, this unit looks as though it could become a standard tool for learning about software defined receivers and transmitters. The module operates over about the 380MHz to 6GHz band, so it's of particular interest to members of this Group. A very quick initial scan of the (already fairly large) available literature gives the impression that the minimum channel width is 200kHz, with a similar bandwidth, and frequency step, but there's already a way of circumventing the frequency step size, and I suspect ways could be found to reduce the bandwidth.

Even with the limitations, this is a very useful approach to generating and receiving signals on all of our bands from 432 to 3400 MHz, and it would be worth people with more advanced SDR/software skills than mine, taking a careful look.

73

Chris GW4DGU


Re: A couple of gripes about 1296MHz

Tom GM8MJV
 

Hello Brian

I did try it following the mail for GM6BIG - I have the opposite from you - cannot hear GB3CSB at all but I can get GM6BIG/b at 52 - (I have not tried from reflections but now on list for later)

There is a neat path display tool and I have what looks like the pentlands in the way.

Regards

Tom



On 10 Oct 2017, at 13:26, Brian Howie brian@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

In message <3f048c18-2bae-48c7-dfe3-7193011f47a6@...>, "David
GM6BIG gm6big@... [ukmicrowaves]" <ukmicrowaves@...>
writes
>Hi Tom,
>
>Dont know exactly where you are, but a good chance you will get GB3CSB
>on 1296.875, been on air for around 10 years.
>Also GM6BIG/b on 1298.002, although QRP it is omni, been on for around
>30 years...
>A look at beaconspot will show the locations.
>
>I know EDN has been having a rocky time of it...
>
>Hopefully catch up at the GMRT this year.
>
>Cheers, David

I can see the mast at Blackhill from here but GM6BIG/b is surprisingly
weak, but the actual antenna is probably below the horizon. I get GB3CSB
on both 23cm and 13cm stronger by a reflection off something to the SW
as it doesn't beam East. Tom might try that.

Brian GM4DIJ
--
Brian Howie



Re: A couple of gripes about 1296MHz

Brian Howie <brian@...>
 

In message <3f048c18-2bae-48c7-dfe3-7193011f47a6@gmail.com>, "David GM6BIG gm6big@gmail.com [ukmicrowaves]" <ukmicrowaves@yahoogroups.com> writes
Hi Tom,

Dont know exactly where you are, but a good chance you will get GB3CSB
on 1296.875, been on air for around 10 years.
Also GM6BIG/b on 1298.002, although QRP it is omni, been on for around
30 years...
A look at beaconspot will show the locations.

I know EDN has been having a rocky time of it...

Hopefully catch up at the GMRT this year.

Cheers, David
I can see the mast at Blackhill from here but GM6BIG/b is surprisingly weak, but the actual antenna is probably below the horizon. I get GB3CSB on both 23cm and 13cm stronger by a reflection off something to the SW as it doesn't beam East. Tom might try that.

Brian GM4DIJ
--
Brian Howie


Re: 24 volt relay on 12 volt

Nick Gregory G0HIK
 

Thanks Ian,

I thought that there was one on you r pages somewhere, but I couldn't find it at the time.

It's now with my folder of useful bits.

Nick


Re: A couple of gripes about 1296MHz

Gordonjcp <gordon@...>
 

On Tue, Oct 10, 2017 at 10:19:51AM +0100, 'brian.flynn@tiscali.co.uk' brian.flynn@tiscali.co.uk [ukmicrowaves] wrote:
Regarding GB3EDN the beacon is sited on the Kings Buildings campus of
University of Edinburgh on the south side of the city. The antenna is
sited on top of a four storey tower block so is at a good height AGL.
(It can be seen on google earth if you know where to look!). The ground
rises quite steeply to the south so coverage in that direction is poor
It is clear north and east having a good view down the Forth estuary to
Scandinavia. The original intention back in 1976 was to give warning of
tropo openings in that direction. I have now retired from the University
but will have access to the site for the next 18 months at least. When I
finally go I will in all conscience have to remove it I am afraid.
In a previous job I looked after 460MHz (bloody longwave bollocks) comms
gear on the roof of the library at the Kings buildings site. My first
choice was alongside EDN but apparently mobile phone kit was going up
there and we weren't allowed to use that roof.

Is there no-one else there interested in keeping it on?

--
Gordonjcp MM0YEQ


Re: A couple of gripes about 1296MHz

GM6VXB
 


Just a thought.
How about seeing if the beacon could be co-sited with
the GM8FFX 10GHz beacon at Porthlethen. Not sure
if there is enough room but as you say, worth discussing
at the GMRT.
 
Martin, GM6VXB
 

----- Original Message -----
Sent: Tuesday, October 10, 2017 9:19 AM
Subject: [ukmicrowaves] Re: A couple of gripes about 1296MHz

 

Regarding GB3EDN the beacon is sited on the Kings Buildings campus of
University of Edinburgh on the south side of the city. The antenna is
sited on top of a four storey tower block so is at a good height AGL.
(It can be seen on google earth if you know where to look!). The ground
rises quite steeply to the south so coverage in that direction is poor
It is clear north and east having a good view down the Forth estuary to
Scandinavia. The original intention back in 1976 was to give warning of
tropo openings in that direction. I have now retired from the University
but will have access to the site for the next 18 months at least. When I
finally go I will in all conscience have to remove it I am afraid.

Perhaps the matter can be discussed at the GMRT on the 4th of November
at the MoC.

73s, Brian GM8BJF (GB3EDN beacon keeper)
--


Re: A couple of gripes about 1296MHz

Brian Flynn GM8BJF
 

Regarding GB3EDN the beacon is sited on the Kings Buildings campus of University of Edinburgh on the south side of the city. The antenna is sited on top of a four storey tower block so is at a good height AGL. (It can be seen on google earth if you know where to look!). The ground rises quite steeply to the south so coverage in that direction is poor It is clear north and east having a good view down the Forth estuary to Scandinavia. The original intention back in 1976 was to give warning of tropo openings in that direction. I have now retired from the University but will have access to the site for the next 18 months at least. When I finally go I will in all conscience have to remove it I am afraid.

Perhaps the matter can be discussed at the GMRT on the 4th of November at the MoC.

73s, Brian GM8BJF (GB3EDN beacon keeper)
--


Re: A couple of gripes about 1296MHz - CSB Freqy Typo

David GM6BIG
 

Hi Tom,

That should have been 1296.985MHz for CSB...

Cheers, David

On 09-Oct-17 11:51, Tom Melvin tom@tkrh.co.uk [ukmicrowaves] wrote:
Thanks David,
Not checked those - will do shortly :-)
Round Table - yes about to fill in registration
Tom
On 9 Oct 2017, at 11:35, David GM6BIG gm6big@gmail.com <mailto:gm6big@gmail.com> [ukmicrowaves] <ukmicrowaves@yahoogroups.com <mailto:ukmicrowaves@yahoogroups.com>> wrote:

Hi Tom,

Dont know exactly where you are, but a good chance you will get GB3CSB
on 1296.875, been on air for around 10 years.
Also GM6BIG/b on 1298.002, although QRP it is omni, been on for around
30 years...
A look at beaconspot will show the locations.

I know EDN has been having a rocky time of it...

Hopefully catch up at the GMRT this year.

Cheers, David

On 08-Oct-17 21:32, tom@tkrh.co.uk <mailto:tom@tkrh.co.uk> [ukmicrowaves] wrote:
Martin, Just joined this group and in middle of re-building 23 cms PA -
Had the same issues with you couple of months back with Scottish
beacons
- thankfully EDN now back on - but Angus ready did confuse me till
discovered status.


Happy to run tests and point your way in contests etc. - should have
the
PA fixed in next week or so

Tom
GM8MJV (Edinburgh)

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Re: A couple of gripes about 1296MHz

GM6VXB
 


Stopped the beacon while I tidy it up a bit.
Was heard at 340Km while running about 80 Watt to a 55 ele Tonna.
Only half power as do not want to overheat the grids on the amp.
Will do another run starting at 18:30 local time and monitor KST.
Same beam heading unless requested otherwise.
 
Martin, GM6VXB
 

----- Original Message -----
Sent: Monday, October 09, 2017 1:22 PM
Subject: Re: [ukmicrowaves] Re: A couple of gripes about 1296MHz

 



Just for info, I dug into my bits box and found an old driver board that moded down to 23cm easily.
Now driving it with PI4 and CW with my call/B and locator.
Will leave it running to 180 degree for a hour or so on 1296.004MHz.
If my interest is peaked then will see what I can throw together to make up an amplifier rather than
run my present 'Homebrew' 2X2C39 amp.
 
Martin, GM6VXB
 
----- Original Message -----
Sent: Monday, October 09, 2017 8:50 AM
Subject: [ukmicrowaves] Re: A couple of gripes about 1296MHz

 

Perhaps you could join forces and build a beacon /help find a new site for existing ?
The UK Microwave Group have funds that can be applied for to help cover equipment costs .
Sites are the key - try an approach to an existing repeater group or even appeal to a Mc Mobile outfit - I watched the growth of hilltop sites over the 15 years of GM holidays , starting from the late 80's - there's a lot of it about .
Regarding Beacon status , BeaconSpot is maintained on behalf of the UK Microwave Group by Robin G8APZ and is as up to date as the individual Keepers and Users supplied data .
User reports are kept on individual Beacons , so if in doubt about frequency or operational status , looking at the recent spots will give you a good clue to its status .
This resource alone is worth the £6 annual membership of the Group.

If you are attending the Scottish Microwave event on November 4th , I am sure there will be members willing and able to offer advice on Beacon building issues .

73
John
G0API

PS If lack of activity on 1296MHZ is an issue , try EME ....


Re: A couple of gripes about 1296MHz

Derek Brown G8ECI
 

Hi Martin,

I will take a listen for your beacon when I get home this afternoon, the path profile between us, does not look to bad, there's an awful of the North Sea and a bit of North Yorkshire around the Scarborough area, my take off due north is pretty clear, so you never know, if I do hear anything that I think will be the first time I have heard a GM signal from the main part of Scotland on 23cm ( I did work someone last year in Shetland). Currently my 2x2C39A PA is also under rebuild, and I have my antenna system to upgrade, a new 44 Ele Wimo and a taller mast with a proper rotator. Currently just upgrading the 6, 4 & 2 M antenna system, but once I complete that I will get the 70m, 23cm and even 13 cm gear on the stocks.
If any copied will send an email.

73 G8ECI Jo03ai


On Monday, 9 October 2017, 14:34, "'Martin Andrew' martin.andrew@... [ukmicrowaves]" wrote:


 

Just for info, I dug into my bits box and found an old driver board that moded down to 23cm easily.
Now driving it with PI4 and CW with my call/B and locator.
Will leave it running to 180 degree for a hour or so on 1296.004MHz.
If my interest is peaked then will see what I can throw together to make up an amplifier rather than
run my present 'Homebrew' 2X2C39 amp.
 
Martin, GM6VXB
 
----- Original Message -----
Sent: Monday, October 09, 2017 8:50 AM
Subject: [ukmicrowaves] Re: A couple of gripes about 1296MHz

 
Perhaps you could join forces and build a beacon /help find a new site for existing ?
The UK Microwave Group have funds that can be applied for to help cover equipment costs .
Sites are the key - try an approach to an existing repeater group or even appeal to a Mc Mobile outfit - I watched the growth of hilltop sites over the 15 years of GM holidays , starting from the late 80's - there's a lot of it about .
Regarding Beacon status , BeaconSpot is maintained on behalf of the UK Microwave Group by Robin G8APZ and is as up to date as the individual Keepers and Users supplied data .
User reports are kept on individual Beacons , so if in doubt about frequency or operational status , looking at the recent spots will give you a good clue to its status .
This resource alone is worth the £6 annual membership of the Group.

If you are attending the Scottish Microwave event on November 4th , I am sure there will be members willing and able to offer advice on Beacon building issues .

73
John
G0API

PS If lack of activity on 1296MHZ is an issue , try EME ....



Re: A couple of gripes about 1296MHz

GM6VXB
 


Just for info, I dug into my bits box and found an old driver board that moded down to 23cm easily.
Now driving it with PI4 and CW with my call/B and locator.
Will leave it running to 180 degree for a hour or so on 1296.004MHz.
If my interest is peaked then will see what I can throw together to make up an amplifier rather than
run my present 'Homebrew' 2X2C39 amp.
 
Martin, GM6VXB
 

----- Original Message -----
Sent: Monday, October 09, 2017 8:50 AM
Subject: [ukmicrowaves] Re: A couple of gripes about 1296MHz

 

Perhaps you could join forces and build a beacon /help find a new site for existing ?
The UK Microwave Group have funds that can be applied for to help cover equipment costs .
Sites are the key - try an approach to an existing repeater group or even appeal to a Mc Mobile outfit - I watched the growth of hilltop sites over the 15 years of GM holidays , starting from the late 80's - there's a lot of it about .
Regarding Beacon status , BeaconSpot is maintained on behalf of the UK Microwave Group by Robin G8APZ and is as up to date as the individual Keepers and Users supplied data .
User reports are kept on individual Beacons , so if in doubt about frequency or operational status , looking at the recent spots will give you a good clue to its status .
This resource alone is worth the £6 annual membership of the Group.

If you are attending the Scottish Microwave event on November 4th , I am sure there will be members willing and able to offer advice on Beacon building issues .

73
John
G0API

PS If lack of activity on 1296MHZ is an issue , try EME ....


Beacon operators at RSGB Convention?

Derek Kozel <derek.kozel@...>
 

Hello all,

I recently moved from the US (and previously a year in Glasgow) to Cardiff. BeaconSpot shows no currently active beacons within South Wales or the south coast of the Bristol Channel. It looks like Mark Bover GW8KCY and Keith Winnard GW3TKH had beacons running in the area, Keith's on 10 GHz just earlier this year. I should have my UK license after the convention and would like to setup a family of beacons from 1 GHz and up.


If there is anyone going to the convention this weekend and would be willing to share their experience of setting up and maintaining a beacon I'd be very interested in talking.


Guenael Jouchet, VA2GKA, has designed a series of beacon transmitters from 50 MHz to the 23 cm band and I'd like to start by installing one of his 23 cm beacons. It currently supports sending Morse, WSPR, JT4, and PI4.

https://www.guenael.ca/content/TinyBeacon-EN-Guenael.pdf
https://circuitmaker.com/Projects/Details/Guenael-VA2GKA/TinyBeacon-1300-RevB
https://github.com/Guenael/tinybeacon-1300

Thanks,
Derek
MW/AG6PO


Finingley Optical Transceiver MKII

terry.bailey@...
 

Hi there, I was interested in this at the BATC CAT17 event at Finningley earlier this year and understood (maybe erroneously) that this was intended to come out as a kit.


Is there any news as to when this might be available?


Thanks

Terry

G6CRF


Re: A couple of gripes about 1296MHz

Neil Smith G4DBN
 

I can hear CSB on 23cm most of the time down here in the East Yorkshire flatlands. CSB on 13cm needs a bit of help from aircraft scatter unless there is a bit of tropo enhancement.  Never heard EDN on 23cm, which is odd because the troposcatter path loss ought to be 10dB better than CSB, but I guess the ERP is lower. Maybe I should listen harder....

Neil G4DBN


Re: A couple of gripes about 1296MHz

Tom GM8MJV
 

Thanks David,

Not checked those - will do shortly :-)

Round Table - yes about to fill in registration 

Tom

On 9 Oct 2017, at 11:35, David GM6BIG gm6big@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

Hi Tom,

Dont know exactly where you are, but a good chance you will get GB3CSB
on 1296.875, been on air for around 10 years.
Also GM6BIG/b on 1298.002, although QRP it is omni, been on for around
30 years...
A look at beaconspot will show the locations.

I know EDN has been having a rocky time of it...

Hopefully catch up at the GMRT this year.

Cheers, David

On 08-Oct-17 21:32, tom@... [ukmicrowaves] wrote:
> Martin, Just joined this group and in middle of re-building 23 cms PA -
> Had the same issues with you couple of months back with Scottish beacons
> - thankfully EDN now back on - but Angus ready did confuse me till
> discovered status.
>
>
> Happy to run tests and point your way in contests etc. - should have the
> PA fixed in next week or so
>
> Tom
> GM8MJV (Edinburgh)
>
>

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