Date   

Re: Eltek Flatpack2 PSU tracking numbers sent

Dave Cawley G4IUG
 

I believe everyone who has ordered one,  has had an email this afternoon with a tracking number.  If not please contact me.

73  Dave  G4IUG  Ex G8EAO


Re: 24 GHz

Neil Smith G4DBN
 

There is rather a dearth of 24 GHz ops within earshot of this corner of IO93, and the nearest beacons are 160 km away over the top of the Pennines, or 250 km away in Suffolk/Essex. Perhaps there are some ops with transverters under heaps of dust.  I'll find a volunteer to take a signal source out into the hinterland to check rx performance and maybe use a bare mixer on receive to confirm that I'm making plenty of noise.

EME seems hugely simpler, at least on receive.

Neil G4DBN (too many projects, too little time, need to retire)

On 01/02/2021 15:30, John Lemay wrote:
Neil

Only two minds ........ ?

Anyway, just thinking out loud, if you install a system for terrestrial at home you will have a chance to iron out any bugs. Bugs which might be much more awkward to sort out in the field. It may depend on whether you have a path to one or more beacons, or another home op.

John G4ZTR


-----Original Message-----
From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Neil Smith G4DBN
Sent: 01 February 2021 15:19
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] 24 GHz

I'm in two minds whether to go to the effort of putting the 24G stuff on
the mast for terrestrial, or just using it for EME and portable. I
suppose I should build it as a weatherproof cassette that can be swapped
back and forth. Need a lottery win to afford a second system I guess.

Neil G4DBN


Re: 24 GHz

John Lemay
 

Neil

Only two minds ........ ?

Anyway, just thinking out loud, if you install a system for terrestrial at home you will have a chance to iron out any bugs. Bugs which might be much more awkward to sort out in the field. It may depend on whether you have a path to one or more beacons, or another home op.

John G4ZTR

-----Original Message-----
From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Neil Smith G4DBN
Sent: 01 February 2021 15:19
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] 24 GHz

I'm in two minds whether to go to the effort of putting the 24G stuff on
the mast for terrestrial, or just using it for EME and portable. I
suppose I should build it as a weatherproof cassette that can be swapped
back and forth. Need a lottery win to afford a second system I guess.

Neil G4DBN








--
This email has been checked for viruses by AVG.
https://www.avg.com


Re: 24 GHz

Neil Smith G4DBN
 

I'm in two minds whether to go to the effort of putting the 24G stuff on the mast for terrestrial, or just using it for EME and portable. I suppose I should build it as a weatherproof cassette that can be swapped back and forth.  Need a lottery win to afford a second system I guess.

Neil G4DBN


Re: 24 GHz

g4bao
 

I should of course have said, UK record, Rainer!

73
John


Re: ************* Brexit

Bob Lockley VK6KW
 

Hi Folks,

I too am willing to help facilitate access to supplies if required, however I suspect that it is likely to be a “temporary” problem as in today’s edition of our daily The West Australian I see a report on the UK seeking to… “formally apply to join a huge free trade pact that includes VK, VE, JA, and ZL …”.

 

I suspect that freight and mail is being quarantined if not disinfected as it arrives at each border so do not take much notice of proposed delivery dates.

 

73,

Bob VK6KW

 

 

From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Roger
Sent: Monday, February 01, 2021 3:18 AM
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] ************* Brexit

 

Hi Mark,

Send me an email and Ill see what I can do.

I have to say though I waited 4 weeks for some items to clear VK land before they finally got send to ZL.

That was a while ago so maybe better now.

 

73

 

Roger ZL3RC



On 31/01/2021, at 11:34 PM, G8ZHA via groups.io <g8zha-1@...> wrote:

 

I have just sent an email to Mini-kits in VK, enquiring about a couple of PCBs and received this reply:

 

Sorry we can no longer ship to the UK due to changes to your tax system.

 

 

regards mark

 

Mini-Kits

P.O. Box 686

Prospect East

South Australia 5082

Ph 0419826666  Business hours only

Fax 08 82610079

 

 


Re: ************* Brexit

Roger
 

Hi Mark,
Send me an email and Ill see what I can do.
I have to say though I waited 4 weeks for some items to clear VK land before they finally got send to ZL.
That was a while ago so maybe better now.

73

Roger ZL3RC

On 31/01/2021, at 11:34 PM, G8ZHA via groups.io <g8zha-1@...> wrote:

I have just sent an email to Mini-kits in VK, enquiring about a couple of PCBs and received this reply:
 
Sorry we can no longer ship to the UK due to changes to your tax system.
 
 
regards mark
 
Mini-Kits
P.O. Box 686
Prospect East
South Australia 5082
Ph 0419826666  Business hours only
Fax 08 82610079
 


Re: 24 GHz

John Quarmby
 

The UK Distance record on 24GHz.

https://www.microwavers.org/records.htm

73

John G3XDY

On 31/01/2021 15:56, DF6NA Rainer wrote:
Hi John,

which record do you mean ?

Distance record on 24,048 GHz Propagation : TR

Band    Propagation    Call a    Loc     Call b    Loc    Mode    Date    Distance
24,048 GHz    TR    DL7QY    JN59BD    F6DKW    JN18CS    ?    2011-07-02    581
24,048 GHz    TR    IW3EHQ/3    JN66EB    I0LVA/3    JN72CD    CW+SSB    2000-06-18    459
24,048 GHz    TR    F6DWG    JN19AJ    HB9AMH/P    JN37OE    CW    2006-11-06    455
24,048 GHz    TR    I3EME    JM68MA    I0LVA    JN62KA    CW    1999-09-11    444
24,048 GHz    TR    SM6AFV    JO67GQ    DK7LJ    JO54CG    SSB    2013-02-27    407

Distance record on 24,048 GHz Propagation : RS

Band    Propagation    Call a    Loc     Call b    Loc    Mode    Date    Distance
24,048 GHz    RS    LX1DB    JN39CO    F2CT/P    JN13IQ    CW    2008-06-24    710
24,048 GHz    RS    F6DWG/P    JN19AJ    F2CT/P    JN13IQ    CW    2008-06-24    637
24,048 GHz    RS    OE5VRL/5    JN78DK75VC    HB9AMH    JN37QD    CW    2012-09-10    536
24,048 GHz    RS    DB6NT    JO50VJ    PA0BAT    JO31FX    CW    2005-07-28    412
24,048 GHz    RS    PA0BAT    JO31FX    DB6NT    JO50TI    CW    2003-06-03    404

73, Rainer


Am 31.01.2021 um 15:58 schrieb g4bao:
Hi Gerard, I'm QRV permanently
2W to 60cm
JO02cg33
I'm still looking to break that European Tropo record to you.

We'd beat your G4EAT record by 12km if we managed a QSO! 

Also plan to be QRV 24GHz EME in the Spring, system nearly ready for bench test.
25W to 1.2m offset on EME

73
Tot Zeins!

John


 


Virus-free. www.avast.com


Re: 24 GHz

DF6NA Rainer
 

Hi John,

which record do you mean ?

Distance record on 24,048 GHz Propagation : TR

Band    Propagation    Call a    Loc     Call b    Loc    Mode    Date    Distance
24,048 GHz    TR    DL7QY    JN59BD    F6DKW    JN18CS    ?    2011-07-02    581
24,048 GHz    TR    IW3EHQ/3    JN66EB    I0LVA/3    JN72CD    CW+SSB    2000-06-18    459
24,048 GHz    TR    F6DWG    JN19AJ    HB9AMH/P    JN37OE    CW    2006-11-06    455
24,048 GHz    TR    I3EME    JM68MA    I0LVA    JN62KA    CW    1999-09-11    444
24,048 GHz    TR    SM6AFV    JO67GQ    DK7LJ    JO54CG    SSB    2013-02-27    407

Distance record on 24,048 GHz Propagation : RS

Band    Propagation    Call a    Loc     Call b    Loc    Mode    Date    Distance
24,048 GHz    RS    LX1DB    JN39CO    F2CT/P    JN13IQ    CW    2008-06-24    710
24,048 GHz    RS    F6DWG/P    JN19AJ    F2CT/P    JN13IQ    CW    2008-06-24    637
24,048 GHz    RS    OE5VRL/5    JN78DK75VC    HB9AMH    JN37QD    CW    2012-09-10    536
24,048 GHz    RS    DB6NT    JO50VJ    PA0BAT    JO31FX    CW    2005-07-28    412
24,048 GHz    RS    PA0BAT    JO31FX    DB6NT    JO50TI    CW    2003-06-03    404

73, Rainer


Am 31.01.2021 um 15:58 schrieb g4bao:

Hi Gerard, I'm QRV permanently
2W to 60cm
JO02cg33
I'm still looking to break that European Tropo record to you.

We'd beat your G4EAT record by 12km if we managed a QSO! 

Also plan to be QRV 24GHz EME in the Spring, system nearly ready for bench test.
25W to 1.2m offset on EME

73
Tot Zeins!

John


 


Re: PMI Isolator

Paul G8AQA
 

This link shows someone's tracking generator incorporating such a device

https://www.qsl.net/n9zia/tracking/index.html

The key to success in making a tracking generator with good dynamic range is to isolate the spec an SALO

output from the mixer.  In the absence of a PMI it can be done with amplifiers and attenuators.

http://www.ke5fx.com/tg8566.html

http://www.kerrywong.com/2016/01/10/building-a-tracking-generator/

http://www.rollanet.org/~joeh/projects/TG_for_the_HP8566B.pdf

The PMI I have for my TG is HP P/N 0960-0638.  I hope it will be ok.

Paul G8AQA


On 31/01/2021 13:08, Glyn M0XGT wrote:
On Sun, Jan 31, 2021 at 12:32 PM, Andy G4JNT wrote:
 "Peripheral Mode Isolator"
Some useful info here:
http://www.dd1us.de/Downloads/Peripheral%20Mode%20Isolator%20WMI%20PMI-4444-2%20rev2.pdf

Glyn


Virus-free. www.avg.com


Re: 24 GHz

g4bao
 

Hi Gerard, I'm QRV permanently
2W to 60cm
JO02cg33
I'm still looking to break that European Tropo record to you.

We'd beat your G4EAT record by 12km if we managed a QSO! 

Also plan to be QRV 24GHz EME in the Spring, system nearly ready for bench test.
25W to 1.2m offset on EME

73
Tot Zeins!

John


 


Re: DC switching.

Robin Szemeti - G1YFG
 

So on the plus side ... the boards I ordered at about 10am on Saturday ( about 60 boards across 5 different projects) are all through production and into final inspection and shipping ...

On the downside, I am still locked in mortal combat with my SMD machine after a software upgrade.  My code that produces the binary format production file for the machine from an Eagle .BRD XML file is not quite playing ball, mostly because the machine format is entirely undocumented.  It's tempting to rip the old DOS based controller off it and spend half a lifetime installing and Open Source pick and place system on the remains ...


On Sat, 30 Jan 2021 at 12:04, Colin Ranson <g8lbs@...> wrote:

I like ’real’ RF Andy, seems a shame to relegate the DDS to the bin.

 

Happy rainy days !

 

Colin.

 

Sent from Mail for Windows 10

 

From: Andy G4JNT
Sent: 30 January 2021 11:45
To: UK Microwaves groups.io
Subject: Re: [UKMicrowaves] DC switching.

 

Or use a synthesizer module...

 

Andy

 

 

 

On Sat, 30 Jan 2021 at 10:47, Colin Ranson <g8lbs@...> wrote:

All,

 

High Power DC 5V-36V 15A 400W MOSFET Trigger Switch Drive Module

High Power DC 5V-36V 15A 400W MOSFET Trigger Switch Drive Module

Total: £5.99 per pair.

Order number: 15-06479-48440

Item number: 133549042395

 

 

 

 

 

2 x modules arrived this morning.   Rather amused to see that the high current switching (with those blue screw down connectors ? )  is done in the NEGATIVE line !   Oh well, expect they will be useful for something.

 

I have ordered one of the French 10GHz PCB’s.    I knew I would build something one day with a UHF IF, funnily enough I have a couple of the mixers already in stock- premonition ? About 5 years ago I built a G4HUP DDS with an output of 92MHz. So just need to knuckle down and make a multiplier chain (x3, x3, x3.)

 

Regards to all,

 

Colin de G8LBS.

 

Sent from Mail for Windows 10

 

 


--
Robin Szemeti - G1YFG


Re: PMI Isolator

Glyn M0XGT
 

On Sun, Jan 31, 2021 at 12:32 PM, Andy G4JNT wrote:
 "Peripheral Mode Isolator"
Some useful info here:
http://www.dd1us.de/Downloads/Peripheral%20Mode%20Isolator%20WMI%20PMI-4444-2%20rev2.pdf

Glyn


PMI Isolator

Andy G4JNT
 

One of the components recovered from the old Eaton Spec an last year is a PMI-5074 "Peripheral Mode Isolator"
It was used in the YIG LO feed to the frequency locking circuitry, and is described in the manual as a "40dB" unit.   It covers the 2-4GHz LO range.

40dB, if that's the return S12 / S22 figure is pretty good, nay, very good.   

Does anyone know what is meant by "Peripheral Mode" in this context?  T'Internet is not at-all helpful, although does tell me it has a certain intrinsic value in dollars !



Re: ************* Brexit

Robin Szemeti - G1YFG
 

As Andy said, this is NOT a Brexit thing.

We have done it 6 months earlier than the "rest" of the EU, but even if we had remained in the EU, would would be implementing these same changes in July.  We've just gone off 6 months earlier than everyone else, that's all.

Personally, as a UK manufacturer, having to compete with foreign imports that were 20% cheaper purely because of VAT avoidance was a pain and I welcome the change even if it will cause me a few personal difficulties.


On Sun, 31 Jan 2021 at 11:02, Neil Smith G4DBN <neil@...> wrote:
Maybe Mini-kits can be persuaded to take the path of least resistance, make a pact with the devil and sell via eBay, who will deal with the VAT on his behalf under the global shipping program.  We end up paying even more of course, but it might be slightly less pain for small vendors.  Quite a few smallish sellers do seem to have registered for UK VAT, or at least are charging it now. Perhaps when the VAT rules change in EU, other small suppliers will get set up for that and do the admin for the UK one at the same time and charge a fee for doing it. Better the cash goes to them than to the “we are only a platform so we don’t make any money in your jurisdiction and don’t pay local taxes” marketplaces.
Neil G4DBN


> On 31 Jan 2021, at 10:48, Andy <mm0fmf@...> wrote:
>
> On 31/01/2021 10:34, G8ZHA via groups.io wrote:
>> I have just sent an email to Mini-kits in VK, enquiring about a couple of PCBs and received this reply:
>> Sorry we can no longer ship to the UK due to changes to your tax system.
>> https://www.minikits.com.au/delivery-information#international
>> regards mark
>> Mini-Kits
>> P.O. Box 686
>> Prospect East
>> South Australia 5082
>> www.minikits.com.au <http://www.minikits.com.au>
>> Ph 0419826666  Business hours only
>> Fax 08 82610079
>> _._,
>
> It's not really a Brexit change per se. It's a VAT change and the same VAT at source change comes into the remaining 27 EU countries in July 2021. If we had remained in the EU, the same change would have happened then rather than January.
>
> The changes are
>
>
>    Abolishing distances sales thresholds and extending the Union MOSS scheme to cover sales of goods as well as all B2C services
>
>    Abolishing the small consignment relief and introducing an import scheme for goods up to €150
>
>    Making marketplaces the supplier of goods in certain situations
>
>    Extending the non-Union MOSS to cover all B2C supplies of services
>
>







--
Robin Szemeti - G1YFG


Re: ************* Brexit

Neil Smith G4DBN
 

Maybe Mini-kits can be persuaded to take the path of least resistance, make a pact with the devil and sell via eBay, who will deal with the VAT on his behalf under the global shipping program. We end up paying even more of course, but it might be slightly less pain for small vendors. Quite a few smallish sellers do seem to have registered for UK VAT, or at least are charging it now. Perhaps when the VAT rules change in EU, other small suppliers will get set up for that and do the admin for the UK one at the same time and charge a fee for doing it. Better the cash goes to them than to the “we are only a platform so we don’t make any money in your jurisdiction and don’t pay local taxes” marketplaces.
Neil G4DBN

On 31 Jan 2021, at 10:48, Andy <mm0fmf@hotmail.com> wrote:

On 31/01/2021 10:34, G8ZHA via groups.io wrote:
I have just sent an email to Mini-kits in VK, enquiring about a couple of PCBs and received this reply:
Sorry we can no longer ship to the UK due to changes to your tax system.
https://www.minikits.com.au/delivery-information#international
regards mark
Mini-Kits
P.O. Box 686
Prospect East
South Australia 5082
www.minikits.com.au <http://www.minikits.com.au>
Ph 0419826666 Business hours only
Fax 08 82610079
_._,
It's not really a Brexit change per se. It's a VAT change and the same VAT at source change comes into the remaining 27 EU countries in July 2021. If we had remained in the EU, the same change would have happened then rather than January.

The changes are


Abolishing distances sales thresholds and extending the Union MOSS scheme to cover sales of goods as well as all B2C services

Abolishing the small consignment relief and introducing an import scheme for goods up to €150

Making marketplaces the supplier of goods in certain situations

Extending the non-Union MOSS to cover all B2C supplies of services


Re: ************* Brexit

Andy
 

On 31/01/2021 10:38, Andy G4JNT wrote:
SO why not some enterprising VK  buy on your behalf - add a bit on for the trouble and send as a private transaction.
Discuss...
Andy
www.g4jnt.com <http://www.g4jnt.com>
------------------------------------------------------------------------
The reason for the VAT changes are given as

Who will benefit from this proposal?

Businesses will benefit from a substantial reduction in cross-border VAT compliance costs. This will facilitate greater cross-border trade.

EU Businesses will be able to compete on equal footing with non-EU businesses that are not charging VAT.

Member States will gain through an increase in VAT revenues of EUR 7 billion annually.

The first point Robin has already alluded to.

The last point shows how much un-taxed stuff was coming in to the EU. I don't know what the missing UK VAT proportion was but probably a fair chunk of that figure.


In this case, Mini-kits can mark the item as a gift and the recipient pays the right tax to the PO when it arrives in the UK and is delivered. Nothing dodgy, the tax gets collected even if it's not a gift.


Re: ************* Brexit

Andy
 

On 31/01/2021 10:34, G8ZHA via groups.io wrote:
I have just sent an email to Mini-kits in VK, enquiring about a couple of PCBs and received this reply:
Sorry we can no longer ship to the UK due to changes to your tax system.
https://www.minikits.com.au/delivery-information#international
regards mark
Mini-Kits
P.O. Box 686
Prospect East
South Australia 5082
www.minikits.com.au <http://www.minikits.com.au>
Ph 0419826666  Business hours only
Fax 08 82610079
_._,
It's not really a Brexit change per se. It's a VAT change and the same VAT at source change comes into the remaining 27 EU countries in July 2021. If we had remained in the EU, the same change would have happened then rather than January.

The changes are


Abolishing distances sales thresholds and extending the Union MOSS scheme to cover sales of goods as well as all B2C services

Abolishing the small consignment relief and introducing an import scheme for goods up to €150

Making marketplaces the supplier of goods in certain situations

Extending the non-Union MOSS to cover all B2C supplies of services


Re: EVO Filter construction

Andy G4JNT
 

Well, a chap in the Filter Group at Matra Marconi Space (as was) once said so. 

On Sun, 31 Jan 2021 at 10:38, John Fell <john.g0api@...> wrote:
... BA are better contact RF wise they say .


Re: ************* Brexit

Andy G4JNT
 

SO why not some enterprising VK  buy on your behalf - add a bit on for the trouble and send as a private transaction.

Discuss...



On Sun, 31 Jan 2021 at 10:35, G8ZHA via groups.io <g8zha-1=blueyonder.co.uk@groups.io> wrote:

I have just sent an email to Mini-kits in VK, enquiring about a couple of PCBs and received this reply:

 

Sorry we can no longer ship to the UK due to changes to your tax system.

 

https://www.minikits.com.au/delivery-information#international

 

regards mark

 

Mini-Kits

P.O. Box 686

Prospect East

South Australia 5082

www.minikits.com.au

Ph 0419826666  Business hours only

Fax 08 82610079

 

2041 - 2060 of 62932