1. UKMicrowaves@groups.io
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Re: 10Ghz preamp?

militaryoperator
 

HI Ben,
Its time for you to meet Franco's SU-02 board as it will do you well on 3cms (and other bands)
You need a sharp knife and some soldering abilities


page 60
cheers
Geoff
GI0GDP

Have to buy my milling machine first to make that milled box I guess. hi.

Ben
Re: 10Ghz preamp?

geoffrey pike
 

HI Ben,
Its time for you to meet Franco's SU-02 board as it will do you well on 3cms (and other bands)
You need a sharp knife and some soldering abilities


page 60
cheers
Geoff
GI0GDP

On Tuesday, 13 July 2021, 22:24:34 BST, militaryoperator via groups.io <military1944@...> wrote:


Anyone making preamps for 10Ghz. I have one, an HEMT type which does work but before I shoehorn it into my 10Ghz box I was just wondering if there's better out there, built of course. No facilities for making pcb's etc. 

Ben
Re: PLL Question

M0ZHN
 

Thanks Andy, will give that a try and see how it goes.

Elia, M0ZHN
Re: PLL Question

Andy G4JNT
 

Looks back though archives ...
Brian being GM8BJF

Yes, use an OPAMP gain stage.   I use the LM6211 which is a 20MHz bandwidth chip that can operate up to 24V, and have used it with LMX2470 and LMX2487 synth chips to drive VCOs that take a tuning voltage greater than 5V.

Rather than a buffer / gain stage though, the complete loop filter is built around the LM6211 which end up as an inverting stage so the appropriate config bit in the synth chip to ser negative phase detector polarity needs to be set.   http://g4jnt.com/LMX2470_DevModule.pdf  gives more details.
  


On Tue, 13 Jul 2021 at 22:36, M0ZHN via groups.io <eliamady=yahoo.com@groups.io> wrote:
Hi Andy,

Thanks for your reply, it was in RadCom Plus Volume 1, No.1 but it is also on Brian's website:

Versatile PLL

Elia, M0ZHN

Re: PLL Question

M0ZHN
 

Hi Andy,

Thanks for your reply, it was in RadCom Plus Volume 1, No.1 but it is also on Brian's website:

Versatile PLL

Elia, M0ZHN
Re: PLL Question

Andy G4JNT
 

Can you refer the RadCom article - like which issue?
I suspect you could use a non-inverting op-amp stage with a gain of 4 running from a 25V rail to get the swing you need.   
May need a fast opamp - There are suitable ones around




On Tue, 13 Jul 2021 at 22:22, M0ZHN via groups.io <eliamady=yahoo.com@groups.io> wrote:
Hi everyone,

I am new here, just joined today. I would like to ask a question if I may. I am looking to build the versatile PLL that was published by Brian in RadCom Plus some time back. The circuit seems to require a VCO that is designed for 0-5V tuning. Is there a way I can use a wideband VCO, say 0-20V tuning, with this circuit and if so what do I need to add/change/modify?

Any advice and help is greatly appreciated.

73 Elia, M0ZHN

10Ghz preamp?

militaryoperator
 

Anyone making preamps for 10Ghz. I have one, an HEMT type which does work but before I shoehorn it into my 10Ghz box I was just wondering if there's better out there, built of course. No facilities for making pcb's etc. 

Ben
PLL Question

M0ZHN
 

Hi everyone,

I am new here, just joined today. I would like to ask a question if I may. I am looking to build the versatile PLL that was published by Brian in RadCom Plus some time back. The circuit seems to require a VCO that is designed for 0-5V tuning. Is there a way I can use a wideband VCO, say 0-20V tuning, with this circuit and if so what do I need to add/change/modify?

Any advice and help is greatly appreciated.

73 Elia, M0ZHN
Re: ADF4351 Controller

Andy G4JNT
 

No, hardware is up to the constructor.
I can do Gerbers



On Tue, 13 Jul 2021 at 20:41, Tim, VK2XAX <VK2XAX@...> wrote:
Hi Andy,

Will you be offering PCB's or is making those up to the reader ?

If the later, can you share the gerbers so I can knock up a few down under ?

thanks

Tim


--
VK2XAX : QF56if : ITU59 : CQ30 : BMARC : WIA
Re: ADF4351 Controller

Tim, VK2XAX
 

Hi Andy,

Will you be offering PCB's or is making those up to the reader ?

If the later, can you share the gerbers so I can knock up a few down under ?

thanks

Tim


--
VK2XAX : QF56if : ITU59 : CQ30 : BMARC : WIA
Re: GB3GCT

Alan Melia
 


Tony this is/was a problem with BT but it is easily solved (well certinly in my case)
 
You may already have done this.....but maybe some missed previous descriptions I still see some bounced mails on the list I run but these are generally because the receiving ISP has tagged the mail incorrectly as spam.
 
Go to web-mail click on your address and click settings on the drop-down menu
select Mail on the LHS menu
then you will see a menu allowing you to block senders or domains
(make sure you did not block anything you want)
Then go to the lower item and set groups.io as a ''safe sender''
 
Without this it seems BT appliesa very aggressive heuristic decision on all incomming mails.
After doing this I got most mails through though some did land in thespam folder until they were approved.
 
Since doing this I have not been bouncing any list server mail distribution including time-nuts (febo) and mailman or other bulk senders
 
I have been receiving groups.io mail for severalyears not and I cant remember any nasties thathave crept though on any group (unlike Yahoo!)
 
Alan
G3NYK
 

----- Original Message -----
Sent: Tuesday, July 13, 2021 5:19 PM
Subject: Re: [UKMicrowaves] GB3GCT

In defence of John I had to switch to digest to avoid those continuous bounced message errors from groups.io.

I was continually having to unlock my account due to this group, others did not appear to be so problematic for some reason.
Since switching to the digest I have not been locked out for something like 2 years.....

Regards
Tony G4NBS

Re: GB3GCT

Tony G4NBS
 

In defence of John I had to switch to digest to avoid those continuous bounced message errors from groups.io.

I was continually having to unlock my account due to this group, others did not appear to be so problematic for some reason.
Since switching to the digest I have not been locked out for something like 2 years.....

Regards
Tony G4NBS
Re: Locate Prog

Andy G4JNT
 

In those early versions there was an approximate conversion for NGR <> Lat/Long doing the rounds that was good for 100m or so accuracy.   It must have been an empirically designed formula as it had a very weird function in there - something like LOG(SIN) or LOG(TAN) IIRC. I could never work out where that came from but it did, sort of work.  Soon replaced it with the OS polynomial that was good for metre accuracy.  
And only recently added the WGS84/GBR36 spheroid conversion for the Windoze versions - that's messy, and it's only good for 3metre accuracy without complicated correction tables.

And to think, back in those days it was difficult enough to get people to use 8 char Locators for 400m resolution.   Now we routinely quote 10 char and even 12 char ones.




On Tue, 13 Jul 2021 at 15:01, Colin G4EML <colin@...> wrote:
Hi Andy, 

Yes the very earliest version used just NGRs. But I soon updated it to use the lat long great circle calcs. That’s why it took so long to calculate, the basic language used was not fast with trig functions. 

Colin. 


On 13 Jul 2021, at 12:22, Andy G4JNT <andy.g4jnt@...> wrote:

Was that a prog that calculated bearings using Pythagorus on NGRs?    The error doing that is quite considerable on paths more than a few tens of km, but back in those days on wide band FM was presumably acceptable.
I started off that way, but as soon as the NGR to Lat/Long routines appeared - the simple one before GPS forced us all to adopt lat/long in WGS84 - it was changed to a great circle calculation.




On Tue, 13 Jul 2021 at 10:17, Colin G4EML <colin@...> wrote:
Yes, I used it in the 90s on the original version of Locate that ran on a Psion Organiser.  That used an EPROM in a cartridge to load the program. I still have one somewhere with it installed. It took about 30 seconds to do a bearing and distance calculation! 

Colin. 

On 13 Jul 2021, at 10:10, Andy G4JNT <andy.g4jnt@...> wrote:

Well, it was me that popularised it in the early 1990s with the original GEOG suite of progs (now all updated to Windows on my website)
But I can't claim complete originality as it was started in the 1980s by G3YGF, G4ELM and others who provided much of the original data - mostly those sites in the listing specified by their NGR.
Julian gave me a copy of teh database on 5-1/4 floppy disc for BBC computers, and I had to find someone who could convert it to PC format




On Tue, 13 Jul 2021 at 10:00, Colin G4EML <colin@...> wrote:
Hi Andy, 

You don’t actually need to set it as the home location. The save uses the most recently entered  location.

It is only saved locally on the device.

I created the database from the sites file that has been around for ever and has been used by many programs. I suspect it may have been you that originally created it. 

If there are any new sites that need adding to the main database I am happy to do that. (If I can remember how to do it!) 

Colin. 


On 13 Jul 2021, at 09:19, Andy G4JNT <andy.g4jnt@...> wrote:

Users of G4EML's LOCATE prog for smartphones:

I've no doubt this was all explained at the time, but I've just worked out how to add an entry to the Site Database used in there.

Enter the NGR or Locator of the site you want to add.  To be useful, use at least the 6 digit 100 metre NGR or the 8 or 10 character Locator.
Set this as Home
Go into the database and type in the name of the site.
Press Save.

Whether this is just stored locally on your phone, or centrally  - I'm not sure
Re: Locate Prog

Colin G4EML
 

Hi Andy, 

Yes the very earliest version used just NGRs. But I soon updated it to use the lat long great circle calcs. That’s why it took so long to calculate, the basic language used was not fast with trig functions. 

Colin. 


On 13 Jul 2021, at 12:22, Andy G4JNT <andy.g4jnt@...> wrote:

Was that a prog that calculated bearings using Pythagorus on NGRs?    The error doing that is quite considerable on paths more than a few tens of km, but back in those days on wide band FM was presumably acceptable.
I started off that way, but as soon as the NGR to Lat/Long routines appeared - the simple one before GPS forced us all to adopt lat/long in WGS84 - it was changed to a great circle calculation.




On Tue, 13 Jul 2021 at 10:17, Colin G4EML <colin@...> wrote:
Yes, I used it in the 90s on the original version of Locate that ran on a Psion Organiser.  That used an EPROM in a cartridge to load the program. I still have one somewhere with it installed. It took about 30 seconds to do a bearing and distance calculation! 

Colin. 

On 13 Jul 2021, at 10:10, Andy G4JNT <andy.g4jnt@...> wrote:

Well, it was me that popularised it in the early 1990s with the original GEOG suite of progs (now all updated to Windows on my website)
But I can't claim complete originality as it was started in the 1980s by G3YGF, G4ELM and others who provided much of the original data - mostly those sites in the listing specified by their NGR.
Julian gave me a copy of teh database on 5-1/4 floppy disc for BBC computers, and I had to find someone who could convert it to PC format




On Tue, 13 Jul 2021 at 10:00, Colin G4EML <colin@...> wrote:
Hi Andy, 

You don’t actually need to set it as the home location. The save uses the most recently entered  location.

It is only saved locally on the device.

I created the database from the sites file that has been around for ever and has been used by many programs. I suspect it may have been you that originally created it. 

If there are any new sites that need adding to the main database I am happy to do that. (If I can remember how to do it!) 

Colin. 


On 13 Jul 2021, at 09:19, Andy G4JNT <andy.g4jnt@...> wrote:

Users of G4EML's LOCATE prog for smartphones:

I've no doubt this was all explained at the time, but I've just worked out how to add an entry to the Site Database used in there.

Enter the NGR or Locator of the site you want to add.  To be useful, use at least the 6 digit 100 metre NGR or the 8 or 10 character Locator.
Set this as Home
Go into the database and type in the name of the site.
Press Save.

Whether this is just stored locally on your phone, or centrally  - I'm not sure
Re: GB3GCT

Andy G4JNT
 

Actually, the RadCpm deadline is 15 July, so you've still time to send an updated copy.
That's what happened with DN last month - the 'stop-press' bit at the end re. the attenuator.



On Tue, 13 Jul 2021 at 14:38, Andy Talbot <andy.g4jnt@...> wrote:

>  As I only take the digest

Perhaps there's a moral there somewhere, John. ;-)
People didn't send these reports in "for the column", they were sent for Group interest




On Tue, 13 Jul 2021 at 14:29, g4bao <john@...> wrote:
Blast! I just submitted the column without these details!
As I only take the digest, can you in future send stuff for the column direct to me.
Ta

John 

Re: GB3GCT

Andy G4JNT
 


>  As I only take the digest

Perhaps there's a moral there somewhere, John. ;-)
People didn't send these reports in "for the column", they were sent for Group interest




On Tue, 13 Jul 2021 at 14:29, g4bao <john@...> wrote:
Blast! I just submitted the column without these details!
As I only take the digest, can you in future send stuff for the column direct to me.
Ta

John 

Re: GB3GCT

g4bao
 

Blast! I just submitted the column without these details!
As I only take the digest, can you in future send stuff for the column direct to me.
Ta

John 
Re: Locate Prog

Andy G4JNT
 

Was that a prog that calculated bearings using Pythagorus on NGRs?    The error doing that is quite considerable on paths more than a few tens of km, but back in those days on wide band FM was presumably acceptable.
I started off that way, but as soon as the NGR to Lat/Long routines appeared - the simple one before GPS forced us all to adopt lat/long in WGS84 - it was changed to a great circle calculation.




On Tue, 13 Jul 2021 at 10:17, Colin G4EML <colin@...> wrote:
Yes, I used it in the 90s on the original version of Locate that ran on a Psion Organiser.  That used an EPROM in a cartridge to load the program. I still have one somewhere with it installed. It took about 30 seconds to do a bearing and distance calculation! 

Colin. 

On 13 Jul 2021, at 10:10, Andy G4JNT <andy.g4jnt@...> wrote:

Well, it was me that popularised it in the early 1990s with the original GEOG suite of progs (now all updated to Windows on my website)
But I can't claim complete originality as it was started in the 1980s by G3YGF, G4ELM and others who provided much of the original data - mostly those sites in the listing specified by their NGR.
Julian gave me a copy of teh database on 5-1/4 floppy disc for BBC computers, and I had to find someone who could convert it to PC format




On Tue, 13 Jul 2021 at 10:00, Colin G4EML <colin@...> wrote:
Hi Andy, 

You don’t actually need to set it as the home location. The save uses the most recently entered  location.

It is only saved locally on the device.

I created the database from the sites file that has been around for ever and has been used by many programs. I suspect it may have been you that originally created it. 

If there are any new sites that need adding to the main database I am happy to do that. (If I can remember how to do it!) 

Colin. 


On 13 Jul 2021, at 09:19, Andy G4JNT <andy.g4jnt@...> wrote:

Users of G4EML's LOCATE prog for smartphones:

I've no doubt this was all explained at the time, but I've just worked out how to add an entry to the Site Database used in there.

Enter the NGR or Locator of the site you want to add.  To be useful, use at least the 6 digit 100 metre NGR or the 8 or 10 character Locator.
Set this as Home
Go into the database and type in the name of the site.
Press Save.

Whether this is just stored locally on your phone, or centrally  - I'm not sure
Re: ADF4351 Controller

Andy G4JNT
 


On Tue, 13 Jul 2021 at 12:09, Colin Ranson <g8lbs@...> wrote:

Andy,

 

I have just looked at the ‘black board’ I have under a good head viewer and the chip is an ADF5355 which goes to 13.5GHz. A completely different kettle of fish to the ADF4351.

I think I got it to make a sig genny, but have now got an alternative.

 

I’ll find something to make it go at a fixed 5328 or 5330MHz, having said that digital stuff is not my forte.

 

73’s

 

de G8LBS – presently putting together a 30w 3400MHz amp.

 

Sent from Mail for Windows 10

 

From: Andy G4JNT
Sent: 13 July 2021 10:54
To: UK Microwaves groups.io
Subject: Re: [UKMicrowaves] ADF4351 Controller

 

OK

I've modded the PIC code, as of yesterday, for 32 spot frequencies with five control links.

Now it's going to be a case of generating the data for 32 frequencies and assembling into the file before placing the code for public consumption.

 

There's also the issue of what reference to choose.  10MHz, obvs.  But how worth it would it be to include a few frequencies for a 25MHz reference - the one often supplied on the Chinese boards?    With 32 settings to choose from, there's space for a small subset of 25MHz ones.

 

Andy

 

 

 

On Tue, 13 Jul 2021 at 10:47, Colin Ranson <g8lbs@...> wrote:

Hi Andy, 2664MHz for x2 to 5328MHz or 2665MHz x2 to 5330MHz for 6cm transverter 432 or 430MHz IF respectively.

 

Thanks for all your interesting posts

 

Colin de G8LBS.

 

Sent from Mail for Windows 10

 

From: Andy G4JNT
Sent: 11 July 2021 12:07
To: UK Microwaves groups.io
Subject: [UKMicrowaves] ADF4351 Controller

 

OK, your input required pse.

I've resurrected the ADF4351 boot project and now have a setup that can set 16 spot frequencies from data stored in the 16F688 PIC

 

If I'm going to make the PIC code widely available, need 16 spot frequencies to programme in for those who can't modify and assemble their own PIC code.   This will all have to be done on a standardised reference input - so this will be 10MHz unless anyone really wants 25MHz

or it could be 8 frequencies at 10MHz Fref and 8 frequencies for 25MHz Fref

 

SO anyone interested, send in your preferences.   If you ASSEMBLE PIC code from a .ASM file you can set your own frequencies - (or, strictly speaking, register sets).

 

I've done two PCB layouts; one directly plugs onto the SV1AFN board, the other onto the many boards using AD's header connection on their eval board.  This one can cope with both the 5x2 pin and in-line connections

 

It may be possible to go to 32 spot frequencies - the board was designed for this eventuality with 5 header selection positions.   SO it may be possible to consider 16 frequencies, with two different references , 10MHz and 25MHz

 

 

 

 

 

Andy

 

 

 
Re: ADF4351 Controller

Colin Ranson
 

Andy,

 

I have just looked at the ‘black board’ I have under a good head viewer and the chip is an ADF5355 which goes to 13.5GHz. A completely different kettle of fish to the ADF4351.

I think I got it to make a sig genny, but have now got an alternative.

 

I’ll find something to make it go at a fixed 5328 or 5330MHz, having said that digital stuff is not my forte.

 

73’s

 

de G8LBS – presently putting together a 30w 3400MHz amp.

 

Sent from Mail for Windows 10

 

From: Andy G4JNT
Sent: 13 July 2021 10:54
To: UK Microwaves groups.io
Subject: Re: [UKMicrowaves] ADF4351 Controller

 

OK

I've modded the PIC code, as of yesterday, for 32 spot frequencies with five control links.

Now it's going to be a case of generating the data for 32 frequencies and assembling into the file before placing the code for public consumption.

 

There's also the issue of what reference to choose.  10MHz, obvs.  But how worth it would it be to include a few frequencies for a 25MHz reference - the one often supplied on the Chinese boards?    With 32 settings to choose from, there's space for a small subset of 25MHz ones.

 

Andy

 

 

 

On Tue, 13 Jul 2021 at 10:47, Colin Ranson <g8lbs@...> wrote:

Hi Andy, 2664MHz for x2 to 5328MHz or 2665MHz x2 to 5330MHz for 6cm transverter 432 or 430MHz IF respectively.

 

Thanks for all your interesting posts

 

Colin de G8LBS.

 

Sent from Mail for Windows 10

 

From: Andy G4JNT
Sent: 11 July 2021 12:07
To: UK Microwaves groups.io
Subject: [UKMicrowaves] ADF4351 Controller

 

OK, your input required pse.

I've resurrected the ADF4351 boot project and now have a setup that can set 16 spot frequencies from data stored in the 16F688 PIC

 

If I'm going to make the PIC code widely available, need 16 spot frequencies to programme in for those who can't modify and assemble their own PIC code.   This will all have to be done on a standardised reference input - so this will be 10MHz unless anyone really wants 25MHz

or it could be 8 frequencies at 10MHz Fref and 8 frequencies for 25MHz Fref

 

SO anyone interested, send in your preferences.   If you ASSEMBLE PIC code from a .ASM file you can set your own frequencies - (or, strictly speaking, register sets).

 

I've done two PCB layouts; one directly plugs onto the SV1AFN board, the other onto the many boards using AD's header connection on their eval board.  This one can cope with both the 5x2 pin and in-line connections

 

It may be possible to go to 32 spot frequencies - the board was designed for this eventuality with 5 header selection positions.   SO it may be possible to consider 16 frequencies, with two different references , 10MHz and 25MHz

 

 

 

 

 

Andy

 

 

 
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