Date   

Re: IS IT JUST ME

Martyn G3UKV
 

Our group has always preferred 2 metre talkback over ON4KST, but we accept for some ops this is a problem (antenna, local noise or lack of personal effort). This is particularly true when the uWave path is marginal, or there's more than one contest taking place and the screen content scrolls at mega-pace. Voice exchange of additional information always beats keyboard typing, doesn't it? One way QSOs (that someone mentioned here) are dodgy via 'KST - at least as the present rules are worded - but via 2 metres are quite OK; we had one of those yesterday. About a fifth of our 34 QSOs on the two bands used 2 metre talkback. So easy !

Incidentally, for almost the very first time, our internet link at our portable site was 100% yesterday - and the sun shone nearly all day!

73  Martyn G3UKV and Telford group (aka G3ZME/P)


On 28/08/2017 11:33, Tony anthony.collett@... [ukmicrowaves] wrote:
 
Have you set it up for split screen with the second screen only showing filtered messages Andy?
73. Tony. G4NBS 


On 28 Aug 2017, at 11:08, 'g7jtt@...' g7jtt@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

As someone who goes out portable it is hard work, as others have said 2mtrs is becoming almost pointless as the amount of power it requires to work the same distances I manage on 3cm is just too much. Battery life is a key factor in all this, if you want to last any amount of time on air it all has to be thought about. So I don't bother with hi power on 2mtrs I mainly use KST or more increasingly mobile phone. Maybe a whatsapp type group is needed ? As I do agree KST can be a bit tedious at times, especially when it's busy. One other thing I enjoy going out portable and I think that's a key factor in what ever way we go, keep it enjoyable don't make it to hard work 😁


All best John G7JTT


On Mon, 28 Aug 2017 at 10:49, John Fell john.g0api@... [ukmicrowaves]
 
I gave up on running my masthead 10GHZ  20W TWT system over 10 years ago for all the previous reasons .

I called for one way ,1/2 point ,  contacts a couple of times during the afternoon yesterday , when several were calling CQ for 10G and had no replies .

I live on what passes for a good take off in this area (IO80) and regularly log several beacons , so I know my system capabilities .

Surely even 1/2 points over 200 + km would be worth the effort , when activity has gone a bit slack ?

Maybe we should just register a uwavers phone data base and use that for skeds - yes , I know it can be  abused , but anyone in that frame of mind will soon become visible and I doubt they are amongst this group.

73
John
G0API


Re: IS IT JUST ME

Neil Smith G4DBN
 

Several other client-side apps exist already, like KSTClient, but they are all (far as I can see) using client-side filtering as there is no complex filter expression facility in KST itself.

For the very specific use-case of microwave ops out in the boondocks with next to zero internet, maybe just congested GPRS with an effective bandwidth of well under a hundred bytes per second, we would need to code up a special-purpose gateway.

From a very simple telnet-protocol app on my phone, I would connect to the gateway URL and give it my username and password. It would log on as me to KST and if autheticated, it would send my client a very tightly SERVER-SIDE filtered feed and show me only logged-in stations out to a specified distance or in a list of locators or whatever. Sky is the limit as the filtering is being done on the gateway server/  It would show me only /cq g4dbn messages unless I ticked a box, but the filtering would be done on the server, and use a decent compression or tokenisation algorithm.  I would add in a set of text filtering functions to show me messages/spots containing specified strings (I'd probably accept a regular expression as well, but then I think in PCRE regexes).

All comms with KST would be from the server.  I would even consider using UDP for the messages, and using a client-side application-layer protocol where an handshake is required.  Also use an adaptive algorithm to reduce background updates when the round-trip time dropped below a threshold.  That fixes the problem of slow upload speeds and cell congestion with GPRS.  Perhaps send only changes to the connected users list, with a trickle feed to keep it fully up to date.

As far as KST is concerned, you would look like a normal telnet user, just like with KST2me.  I would hesitate to permit direct chat between gateway clients as that cuts KST out of the loop and would be a bit antisocial to normal users, but it would certainly be possible to add that facility for when KST goes all laggy and has a long backlog.

Nice little coding project anyone? I have a Linux host at a high-availability datacentre on the internet backbone that could be used to host the gateway.

For an extra-useful touch, how about using a cheap bulk SMS service as an alternative carrier out to/from the client?  That would work where even GPRS isn't useable.

Neil G4DBN

PS At my usual /P site, I get a very reliable 4G service these days, but it would have been great for those vast areas of GM where I only had a few tens of bytes per second effective GPRS throughput, or GSM only

PPS I use a telnet app called Mocha on my Android to connect to KST via telnet on port 23000.


Re: IS IT JUST ME

John Quarmby
 

That's what the Filtered window does. It only shows messages that you send and replies sent to you using the /CQ command. You can also pick up any other messages which mention your callsign, or CQ, using watches. So for microwave operation I have the upper window showing everything on the GHz chat which scrolls quickly, and the lower window shows the filtered messages.

To set it up go to Tools:  Setup KST2ME, select GHz in Chat 1 and Filtered in Chat 2

In my experience it is much better to look at the list of those logged in and target a message to someone there that you would like to work, rather than put out "CQ" calls which will scroll away before many see them.

73

John G3XDY


On 28/08/2017 10:21, Andy Talbot andy.g4jnt@... [ukmicrowaves] wrote:
KST2ME would work even better if you could just display messages to you asl (and any through filters you set up)  as well as CQ calls.  That would be a bit like a proper messaging service.   It already goes part way there with teh highlighting and sounds, so why not offer the full option of not even showing unwanted messages?
Bo ... ???

'jnt


On 28 August 2017 at 11:08, 'g7jtt@...' g7jtt@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

As someone who goes out portable it is hard work, as others have said 2mtrs is becoming almost pointless as the amount of power it requires to work the same distances I manage on 3cm is just too much. Battery life is a key factor in all this, if you want to last any amount of time on air it all has to be thought about. So I don't bother with hi power on 2mtrs I mainly use KST or more increasingly mobile phone. Maybe a whatsapp type group is needed ? As I do agree KST can be a bit tedious at times, especially when it's busy. One other thing I enjoy going out portable and I think that's a key factor in what ever way we go, keep it enjoyable don't make it to hard work 😁


All best John G7JTT


On Mon, 28 Aug 2017 at 10:49, John Fell john.g0api@... [ukmicrowaves]
 
I gave up on running my masthead 10GHZ  20W TWT system over 10 years ago for all the previous reasons .

I called for one way ,1/2 point ,  contacts a couple of times during the afternoon yesterday , when several were calling CQ for 10G and had no replies .

I live on what passes for a good take off in this area (IO80) and regularly log several beacons , so I know my system capabilities .

Surely even 1/2 points over 200 + km would be worth the effort , when activity has gone a bit slack ?

Maybe we should just register a uwavers phone data base and use that for skeds - yes , I know it can be  abused , but anyone in that frame of mind will soon become visible and I doubt they are amongst this group.

73
John
G0API



Virus-free. www.avast.com


Re: IS IT JUST ME

Tony G4NBS
 

Have you set it up for split screen with the second screen only showing filtered messages Andy?
73. Tony. G4NBS 


On 28 Aug 2017, at 11:08, 'g7jtt@...' g7jtt@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

As someone who goes out portable it is hard work, as others have said 2mtrs is becoming almost pointless as the amount of power it requires to work the same distances I manage on 3cm is just too much. Battery life is a key factor in all this, if you want to last any amount of time on air it all has to be thought about. So I don't bother with hi power on 2mtrs I mainly use KST or more increasingly mobile phone. Maybe a whatsapp type group is needed ? As I do agree KST can be a bit tedious at times, especially when it's busy. One other thing I enjoy going out portable and I think that's a key factor in what ever way we go, keep it enjoyable don't make it to hard work 😁


All best John G7JTT


On Mon, 28 Aug 2017 at 10:49, John Fell john.g0api@... [ukmicrowaves]
 

I gave up on running my masthead 10GHZ  20W TWT system over 10 years ago for all the previous reasons .

I called for one way ,1/2 point ,  contacts a couple of times during the afternoon yesterday , when several were calling CQ for 10G and had no replies .

I live on what passes for a good take off in this area (IO80) and regularly log several beacons , so I know my system capabilities .

Surely even 1/2 points over 200 + km would be worth the effort , when activity has gone a bit slack ?

Maybe we should just register a uwavers phone data base and use that for skeds - yes , I know it can be  abused , but anyone in that frame of mind will soon become visible and I doubt they are amongst this group.

73
John
G0API


Re: IS IT JUST ME

Andy G4JNT
 

KST2ME would work even better if you could just display messages to you asl (and any through filters you set up)  as well as CQ calls.  That would be a bit like a proper messaging service.   It already goes part way there with teh highlighting and sounds, so why not offer the full option of not even showing unwanted messages?
Bo ... ???

'jnt


On 28 August 2017 at 11:08, 'g7jtt@...' g7jtt@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

As someone who goes out portable it is hard work, as others have said 2mtrs is becoming almost pointless as the amount of power it requires to work the same distances I manage on 3cm is just too much. Battery life is a key factor in all this, if you want to last any amount of time on air it all has to be thought about. So I don't bother with hi power on 2mtrs I mainly use KST or more increasingly mobile phone. Maybe a whatsapp type group is needed ? As I do agree KST can be a bit tedious at times, especially when it's busy. One other thing I enjoy going out portable and I think that's a key factor in what ever way we go, keep it enjoyable don't make it to hard work 😁


All best John G7JTT


On Mon, 28 Aug 2017 at 10:49, John Fell john.g0api@... [ukmicrowaves]
 

I gave up on running my masthead 10GHZ  20W TWT system over 10 years ago for all the previous reasons .

I called for one way ,1/2 point ,  contacts a couple of times during the afternoon yesterday , when several were calling CQ for 10G and had no replies .

I live on what passes for a good take off in this area (IO80) and regularly log several beacons , so I know my system capabilities .

Surely even 1/2 points over 200 + km would be worth the effort , when activity has gone a bit slack ?

Maybe we should just register a uwavers phone data base and use that for skeds - yes , I know it can be  abused , but anyone in that frame of mind will soon become visible and I doubt they are amongst this group.

73
John
G0API



Re: IS IT JUST ME

John McCarthy
 

As someone who goes out portable it is hard work, as others have said 2mtrs is becoming almost pointless as the amount of power it requires to work the same distances I manage on 3cm is just too much. Battery life is a key factor in all this, if you want to last any amount of time on air it all has to be thought about. So I don't bother with hi power on 2mtrs I mainly use KST or more increasingly mobile phone. Maybe a whatsapp type group is needed ? As I do agree KST can be a bit tedious at times, especially when it's busy. One other thing I enjoy going out portable and I think that's a key factor in what ever way we go, keep it enjoyable don't make it to hard work 😁

All best John G7JTT


On Mon, 28 Aug 2017 at 10:49, John Fell john.g0api@... [ukmicrowaves]
wrote:
 

I gave up on running my masthead 10GHZ  20W TWT system over 10 years ago for all the previous reasons .

I called for one way ,1/2 point ,  contacts a couple of times during the afternoon yesterday , when several were calling CQ for 10G and had no replies .

I live on what passes for a good take off in this area (IO80) and regularly log several beacons , so I know my system capabilities .

Surely even 1/2 points over 200 + km would be worth the effort , when activity has gone a bit slack ?

Maybe we should just register a uwavers phone data base and use that for skeds - yes , I know it can be  abused , but anyone in that frame of mind will soon become visible and I doubt they are amongst this group.

73
John
G0API


Re: IS IT JUST ME

John Fell
 

I gave up on running my masthead 10GHZ  20W TWT system over 10 years ago for all the previous reasons .

I called for one way ,1/2 point ,  contacts a couple of times during the afternoon yesterday , when several were calling CQ for 10G and had no replies .

I live on what passes for a good take off in this area (IO80) and regularly log several beacons , so I know my system capabilities .

Surely even 1/2 points over 200 + km would be worth the effort , when activity has gone a bit slack ?

Maybe we should just register a uwavers phone data base and use that for skeds - yes , I know it can be  abused , but anyone in that frame of mind will soon become visible and I doubt they are amongst this group.

73
John
G0API


Re: IS IT JUST ME

Nick Peckett G4KUX
 

I will agree with David that conditions were down today, certainly when compared to last months session, although the WX was better for the /P stations.
 
I don't use KST2ME and prefer the traditional KST set up which I’ve used for years, and very comfortable with.
 
Living in a good tropo QTH I find that 144175 is practically useless, in fact the odd time I have used it to set up contacts I usually find the stations concerned are better copy on 3cms than 2M, generally because they are at 250-300k and using 10W to a 3-9ele ant, and this just doesn't cut the mustard over these distances, add to that the increasingly noisy environment that is what the 2M band is becoming today and you have some of the reasons that .175 is not working. It was originally adopted in the days of WBFM where contacts of 100klmish generally were generally the order of the day, but in these days on 3cms where virtually everyone has NB SSB/CW and a few Watts of power, the ranges of 3Cms contacts has vastly increased to the point where 2M from a small set up just isn't adequate over the distances involved.
 
While KST might have it’s problems, it’s the best vehicle available for setting up contacts and I cant see any alternative at the moment.
 
Nick G4KUX
 

From: g4asr@... [ukmicrowaves]
Sent: Sunday, August 27, 2017 10:00 PM
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] IS IT JUST ME
 
 

Well here I heard a fair bit of traffic on 144.175 from IO93 down to IO80 and across to IO91. 

Indeed stations needed to move to 185 to avoid causing qrm.
You do need a 'proper' aerial of course. 
 
I always find 'KST irritating with stations asking for skeds and then disappearing to work someone else.
 
I found conditions very poor on 3cm,, stations that I can normally work, like G3XDY (JO02) or G4KUX (IO94),
were virtually inaudible. It just seemed like firing into a wet blanket.  Only 14 QSO's in 8 squares.
 
73 David G4ASR
 
IO81MX 

Virus-free. www.avg.com


Re: IS IT JUST ME

DAVID G4ASR
 

Well here I heard a fair bit of traffic on 144.175 from IO93 down to IO80 and across to IO91. 
Indeed stations needed to move to 185 to avoid causing qrm. 
You do need a 'proper' aerial of course.  

I always find 'KST irritating with stations asking for skeds and then disappearing to work someone else.

I found conditions very poor on 3cm,, stations that I can normally work, like G3XDY (JO02) or G4KUX (IO94),
were virtually inaudible. It just seemed like firing into a wet blanket.  Only 14 QSO's in 8 squares.

73 David G4ASR

IO81MX  


Re: IS IT JUST ME

Ed G3VPF
 

I used KST2ME, but had great difficulty seeing the screen in bright sunlight. I also had trouble attracting attention. To get it working at all I wasted a significant amount of time moving the mobile phone aerial around to get any sort of internet connection. I had 2m, but only by time-sharing the rig with the microwave i/f. I too heard no-one on 144.175. Can anyone confirm which aerial polarisation is generally used? Vertical is the easiest but I guess most will be on horizontal.

Recently I have used text messages with some success.

There does not appear to be an easy answer to this problem so I guess we will each sit on our preferred talkback method.

Ed G3VPF


On Sunday, 27 August 2017, 21:14, "Adrian whatmore g4uvz@... [ukmicrowaves]" wrote:


 
I was using KSTME but is was still of little use today


On Sunday, 27 August 2017, 21:04, "Andy Talbot andy.g4jnt@... [ukmicrowaves]" wrote:


 
Well, I finally managed to master KST2ME and once you've set it up with the sounds and things, and follow the rules it becomes useful - which is more than can be said for the main KST itself.

In a /P environment, it might actually be persuaded to work provided the Inet connection keeps-up

But couldn't believe how quiet 144175 was

6 stations on 5760 from home.

Andy  'jnt


On 27 August 2017 at 20:53, g4uvz@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 
Well I was all ready for a great day working all the stations on the 10GHz contest!
As Andy has said  .175 was very quiet but there were many stations on KST..mostly French.
Operating from home I had a good internet connection but try as I might, I had great difficulty getting contacts.
Stations called looking for contacts   called them on the keys...no Go.
Last contest I worked a dozen stations ..mostly set up on 2M but quite a few direct on 10G
Today I worked 3 stations   two of which were set up on 2M

It seems to me that /P stations probably can't see the wood for the trees   maybe we need a dedicated KST type system for inter G contacts?









Re: IS IT JUST ME

Adrian whatmore <g4uvz@...>
 

I was using KSTME but is was still of little use today


On Sunday, 27 August 2017, 21:04, "Andy Talbot andy.g4jnt@... [ukmicrowaves]" wrote:


 
Well, I finally managed to master KST2ME and once you've set it up with the sounds and things, and follow the rules it becomes useful - which is more than can be said for the main KST itself.

In a /P environment, it might actually be persuaded to work provided the Inet connection keeps-up

But couldn't believe how quiet 144175 was

6 stations on 5760 from home.

Andy  'jnt


On 27 August 2017 at 20:53, g4uvz@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 
Well I was all ready for a great day working all the stations on the 10GHz contest!
As Andy has said  .175 was very quiet but there were many stations on KST..mostly French.
Operating from home I had a good internet connection but try as I might, I had great difficulty getting contacts.
Stations called looking for contacts   called them on the keys...no Go.
Last contest I worked a dozen stations ..mostly set up on 2M but quite a few direct on 10G
Today I worked 3 stations   two of which were set up on 2M

It seems to me that /P stations probably can't see the wood for the trees   maybe we need a dedicated KST type system for inter G contacts?







Re: IS IT JUST ME

Andy G4JNT
 

Well, I finally managed to master KST2ME and once you've set it up with the sounds and things, and follow the rules it becomes useful - which is more than can be said for the main KST itself.

In a /P environment, it might actually be persuaded to work provided the Inet connection keeps-up

But couldn't believe how quiet 144175 was

6 stations on 5760 from home.

Andy  'jnt


On 27 August 2017 at 20:53, g4uvz@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

Well I was all ready for a great day working all the stations on the 10GHz contest!

As Andy has said  .175 was very quiet but there were many stations on KST..mostly French.

Operating from home I had a good internet connection but try as I might, I had great difficulty getting contacts.

Stations called looking for contacts   called them on the keys...no Go.

Last contest I worked a dozen stations ..mostly set up on 2M but quite a few direct on 10G

Today I worked 3 stations   two of which were set up on 2M


It seems to me that /P stations probably can't see the wood for the trees   maybe we need a dedicated KST type system for inter G contacts?






IS IT JUST ME

g4uvz@...
 

Well I was all ready for a great day working all the stations on the 10GHz contest!

As Andy has said  .175 was very quiet but there were many stations on KST..mostly French.

Operating from home I had a good internet connection but try as I might, I had great difficulty getting contacts.

Stations called looking for contacts   called them on the keys...no Go.

Last contest I worked a dozen stations ..mostly set up on 2M but quite a few direct on 10G

Today I worked 3 stations   two of which were set up on 2M


It seems to me that /P stations probably can't see the wood for the trees   maybe we need a dedicated KST type system for inter G contacts?





Re: ADF5355 Signal Source

Mary Echternacht <scootiebug02@...>
 

Thank you, I just bought one of his boards. 73 AC0PY Richard



From: 'Bob VK6KW' rlockley@... [ukmicrowaves]
To: "ukmicrowaves@..."
Sent: ‎Saturday‎, ‎August‎ ‎26‎, ‎2017‎ ‎02‎:‎32‎:‎30‎ ‎PM‎ ‎EDT
Subject: RE: [ukmicrowaves] ADF5355 Signal Source

 

Hi Richard,

Try:

https://zl2bkc.com/store/

 

73,

Bob VK6KW

 

From: ukmicrowaves@... [mailto:ukmicrowaves@...]
Sent: Friday, August 25, 2017 6:17 AM
To: DougF uwaves@... [ukmicrowaves]
Subject: Re: [ukmicrowaves] ADF5355 Signal Source

 

 

Can anyone give me the email address for Wayne? AC0PY Richard USA

 

 

On ‎Thursday‎, ‎August‎ ‎24‎, ‎2017‎ ‎03‎:‎19‎:‎48‎ ‎PM‎ ‎EDT, DougF uwaves@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

 

 

Greetings to all readers!

Many folk will have become familiar in recent years with the 'ZLPLL'
4GHz PLL board designed and sold by Wayne, ZL2BKC.  They are rather
good.....provided, of course, that the reference signal is clean.

Well, Wayne has also been on the scent of the ADF5355 trail and has
produced his first (small) batch of what he now calls the '13G ZLPLL'. 
Different to the earlier edition, the new design requires an off-board
reference, but like the earlier version it's fully programmable and it
works well way up past 13 GHz.  For a digitally generated microwave PLL
at these sorts of frequencies, its PN seems

To generate a 13+ GHz output signal the chip uses a doubler that's
internal to the chip so the PLL 'fundamental' is also present in the
output spectrum, the desired output needing filtering if the F/2
component is a problem.

I have one of Wayne's early batch of 13G ZLPLLs here with me in the UK
and I propose, for possible comparison purposes, to have it with me at
the Crawley RT next month.  Or I may be able to show it off to some
other folk between now and then.....  (I do also have with me a very
good quality 10 MHz OCXO that is appropriately interfaced to the 13G
ZLPLL, so it can be a plug-and-play comparison.)

It should be interesting to compare the output signal from Wayne's
design, one that uses a reliably genuine chip set, with the Chinese ones
that some folk are obviously acquiring!

Cheers and 73,

--Doug Friend, M/VK4OE


Looks like 144.175 really has died

Andy G4JNT
 

I may not have much of an antenna (2 element ) but to hear NOTHING on 144.175MHz for uWave talkback really does seem a bit poor  

Still, KST2ME all seems to work, so ...

'jnt


Re: Activity list for the UK Microwave Group 5.7GHz and 10GHz contests - Sunday 27th August

G1DFL
 


And another late entry:

Pete G1DFL/P
IO91NM Remenham Hill (Good to the South and SW)
10GHz 0.2W 60cm Dish
144.175MHz SSB, KST, 07713 432632
Planning for 2pm to 3.30pm
Also 24G



On Sunday, August 27, 2017 9:43 AM, "'g7jtt@...' g7jtt@... [ukmicrowaves]" wrote:


 
Sorry very late entry 
G7JTT
IO90LX53
2W 3cm sky dish
2mtr or 07762112271 talkback


On Sat, 26 Aug 2017 at 18:44, Andy Talbot andy.g4jnt@... [ukmicrowaves]
wrote:
 
5.7GHz and 10GHz contests - Sunday 27th August

G4JNT    Home station  IO90IV58  5760MHz only
On from the morning,  Around 0900z onwards
KST and will have a small beam up for 144.175MHz

8W 23dBi flat plate  (but via 12m of LDF-450)

'jnt

On 21 August 2017 at 09:36, G3XDY g3xdy@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 
The next in the series of UKuG 5.7GHz and 10GHz Contests takes place
this coming Sunday 27th August, between 0600-1800GMT (0700-1900 BST).
Entrants can choose any 8 hour slot in one or two sessions between those
times. Full rules are here:

http://microwavers.org/files/ 2017-mwrules.pdf

The earlier part of this event coincides with the French F8TD contest
which includes both bands and runs to 1300 GMT.

I will compile an activity list and send it out next Saturday morning,
so inputs by Friday night please, in the usual format:


.



altVirus-free. www.avg.com



Re: Activity list for the UK Microwave Group 5.7GHz and 10GHz contests - Sunday 27th August

John McCarthy
 

Sorry very late entry 
G7JTT
IO90LX53
2W 3cm sky dish
2mtr or 07762112271 talkback


On Sat, 26 Aug 2017 at 18:44, Andy Talbot andy.g4jnt@... [ukmicrowaves]
wrote:
 

5.7GHz and 10GHz contests - Sunday 27th August

G4JNT    Home station  IO90IV58  5760MHz only
On from the morning,  Around 0900z onwards
KST and will have a small beam up for 144.175MHz

8W 23dBi flat plate  (but via 12m of LDF-450)

'jnt

On 21 August 2017 at 09:36, G3XDY g3xdy@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

The next in the series of UKuG 5.7GHz and 10GHz Contests takes place
this coming Sunday 27th August, between 0600-1800GMT (0700-1900 BST).
Entrants can choose any 8 hour slot in one or two sessions between those
times. Full rules are here:

http://microwavers.org/files/ 2017-mwrules.pdf

The earlier part of this event coincides with the French F8TD contest
which includes both bands and runs to 1300 GMT.

I will compile an activity list and send it out next Saturday morning,
so inputs by Friday night please, in the usual format:


.



altVirus-free. www.avg.com


Re: Calibrating an RF detector

Mike Willis
 

Hi Terry,

I have of of those and also one of the OLED versions. I calibrated it against a signal generator which I believe is fairly accurate. It was within 2dB and much better in relative accuracy rather than absolute accuracy, i.e. measuring changes in power, so for example very useful to determine an amplifiers 1 dB compression point. You said you don't have one of those but they are often made available for testing at microwave round tables, as are good quality power meters that you can compare against. The next RT near you can be determined from the UKUG website. There may also be a local amateur with the right gear that can help.

Bear in mind that these chips have some thermal drift so you also need to calibrate against temperature. In practice, they are not really for accurate metrology but as very useful when used with a directional coupler to verify the TX is more or less working.

Mike 


Scottish Microwave Round Table 4th November 2017

Brian Flynn GM8BJF
 

The  website is now open for bookings. It is at

http://www.gmroundtable.org.uk/

To book a place follow the link in the right hand side bar "Links to forms" and it will take you to the booking page. The bookings for the daytime events  and the dinner are separate. The programme follows the tried and tested format of previous years. There are four main talks, the bring and buy/trade tables, the test and measurement facilities and of course the Museum of Communication exhibits. The speakers are:
  • Mark Hughes GM4ISM - "A 10 GHz Home Station"
  • Geoff Pike GI0GDP - "Replacement LO options for the DB6NT G2 Transverters"
  • David Anderson GM6BIG  - "A High Quality 10GHz Beacon"
  • Andy Sinclair MM0FMF and Jack Hood GM4COX - "13cm SOTA"

In the evening there will be the dinner in the Kingswood Hotel about one mile east of Burntisland with the usual entertainments, (the Microwave Band!).


Look forward to seeing you there.


73s


Brian Flynn GM8BJF





Re: ADF5355 Signal Source

Bob Lockley VK6KW
 

Hi Richard,

Try:

https://zl2bkc.com/store/

 

73,

Bob VK6KW

 

From: ukmicrowaves@... [mailto:ukmicrowaves@...]
Sent: Friday, August 25, 2017 6:17 AM
To: DougF uwaves@... [ukmicrowaves]
Subject: Re: [ukmicrowaves] ADF5355 Signal Source

 

 

Can anyone give me the email address for Wayne? AC0PY Richard USA

 

 

On ‎Thursday‎, ‎August‎ ‎24‎, ‎2017‎ ‎03‎:‎19‎:‎48‎ ‎PM‎ ‎EDT, DougF uwaves@... [ukmicrowaves] <ukmicrowaves@...> wrote:

 

 

 

Greetings to all readers!

Many folk will have become familiar in recent years with the 'ZLPLL'
4GHz PLL board designed and sold by Wayne, ZL2BKC.  They are rather
good.....provided, of course, that the reference signal is clean.

Well, Wayne has also been on the scent of the ADF5355 trail and has
produced his first (small) batch of what he now calls the '13G ZLPLL'. 
Different to the earlier edition, the new design requires an off-board
reference, but like the earlier version it's fully programmable and it
works well way up past 13 GHz.  For a digitally generated microwave PLL
at these sorts of frequencies, its PN seems

To generate a 13+ GHz output signal the chip uses a doubler that's
internal to the chip so the PLL 'fundamental' is also present in the
output spectrum, the desired output needing filtering if the F/2
component is a problem.

I have one of Wayne's early batch of 13G ZLPLLs here with me in the UK
and I propose, for possible comparison purposes, to have it with me at
the Crawley RT next month.  Or I may be able to show it off to some
other folk between now and then.....  (I do also have with me a very
good quality 10 MHz OCXO that is appropriately interfaced to the 13G
ZLPLL, so it can be a plug-and-play comparison.)

It should be interesting to compare the output signal from Wayne's
design, one that uses a reliably genuine chip set, with the Chinese ones
that some folk are obviously acquiring!

Cheers and 73,

--Doug Friend, M/VK4OE