Date   

Re: Re elevation on a dish

Neil Smith G4DBN
 

Many dishes come with a tilting mount anyway, you might find it is easy to use bolts, washers and Nyloc nuts plus decent grease to make a solid pivot, then if the dish is stuff, push against it, or if not, fit an arm to the mount and press against that instead. I tend to use stainless steel shafts running in UHMWPE machined bushes as pivots as there is zero slop/backlash and no corrosion/wear issues.

I've found it useful to tilt up a few degrees to use rainscatter off nearby storms, and to follow planes on the glide slope into Doncaster airport at 2-4 degrees up.  Also my eastern horizon is at +0.5 degrees, and when there is ducting over the North Sea, I find that 1 degree of elevation often gets me into the duct over the top of the 600 ft Wolds and over to Helgoland and Denmark when there is almost nil at 0 degrees.

Same when there is a breeze that tilts the mast/dish slightly, I can just raise or lower the dish to compensate and peak things up.

Neil G4DBN


Re: VAT ... it looks like it's going to be difficult.

Robin Szemeti - G1YFG
 

No problem with that, as others have said, there is no place for racism here or anywhere else, but if you are expecting me to refrain from criticising the extensive VAT and customs fraud committed by traders from the Republic of China, I'm afraid you are going to be sadly disappointed.

On Thu, 7 Jan 2021 at 17:13, Wilko <wkb@...> wrote:
Amen to that!

"Politics have no place in ham radio"

Wilko
PA1WBU






--
Robin Szemeti - G1YFG


VK3CV 30THz full system demonstration.

Barry VE4MA
 

I think he refers to it as a number of resistors in the TX 

Barry VE4MA


Re: Re elevation on a dish

Dave
 

Thank you very much Neil. The pictures look very comprehensive .
73
Dave G4GLT. 



On 7 Jan 2021, at 17:53, Neil Smith G4DBN <neil@...> wrote:



If you are pushing against the edge of the dish, take care that the dish doesn't get distorted by the actuator when it is windy.

Here is a pic of Tony G8DMU's neat top-fed 1.2m offset, and some things I've fabricated.  Elevation control has made a spectacular difference to my station performance on 10 GHz. Being able to elevate enough to take sun noise readings has been useful as well.

Neil G4DBN

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On 07/01/2021 17:02, Dave via groups.io wrote:
Hello,
I am adding elevation on a dish for tropo only (not EME) and wondered if anyone has a photo of the mechanics of it, preferably with some sort of hinge . I have an actuator which has a stroke length of 4 inches. I think the lower part of the dish will have to be pushed outwards. 
73
Dave G4GLT. 


Re: Scatterpoint and RadCom columns request for input.

Andy G4JNT
 

Just do the sums - use the spreadsheet
You'll be surprised just how low a distance you'll end up with.



On Thu, 7 Jan 2021 at 17:54, Colin Ranson <g8lbs@...> wrote:

Hi Murray,

 

These new EMF regs, does it mean we shall all have to use our QRO amps as doorstops and boat anchors ?  Does it mean QRO terrestrial TV TX’s, eg Sudbury, Sandy Heath, etc will have to go off air ?

 

Colin de G8LBS.

 

Sent from Mail for Windows 10

 

From: Murray Niman
Sent: 07 January 2021 15:55
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] Scatterpoint and RadCom columns request for input.

 

Given the new EMF regs that Ofcom will confirm in a few weeks, you might not want 1W amps  in a 10GHz waveguide for Foundation, but mW and modest horns can still be educational/fun

73

  Murray G6JYB

 


Re: Scatterpoint and RadCom columns request for input.

Murray Niman
 

Plenty of EMF guidance will be available to help you with the assessment threshold- it is not an absolute limit, but a statutory rule to avoid high fields near other folk.

RSGB will also be releasing a nicer front end for the somewhat basic Ofcom calculator 

for microwaves it will be a nice reminder on the difference between real power and EIRP due to high antenna gains 
Something amateurs as well as the public often overlook.

73

    Murray


Re: Scatterpoint and RadCom columns request for input.

Colin Ranson
 

Hi Murray,

 

These new EMF regs, does it mean we shall all have to use our QRO amps as doorstops and boat anchors ?  Does it mean QRO terrestrial TV TX’s, eg Sudbury, Sandy Heath, etc will have to go off air ?

 

Colin de G8LBS.

 

Sent from Mail for Windows 10

 

From: Murray Niman
Sent: 07 January 2021 15:55
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] Scatterpoint and RadCom columns request for input.

 

Given the new EMF regs that Ofcom will confirm in a few weeks, you might not want 1W amps  in a 10GHz waveguide for Foundation, but mW and modest horns can still be educational/fun

73

  Murray G6JYB

 


Re: VAT ... it looks like it's going to be difficult.

Wilko
 

Amen to that!

"Politics have no place in ham radio"

Wilko
PA1WBU


Re elevation on a dish

Dave
 

Hello,
I am adding elevation on a dish for tropo only (not EME) and wondered if anyone has a photo of the mechanics of it, preferably with some sort of hinge . I have an actuator which has a stroke length of 4 inches. I think the lower part of the dish will have to be pushed outwards.
73
Dave G4GLT.


Re: Microstrip Filter designer

g4bao
 

Don'tya just hate it when newer versions of software don't support old file formats?

None of my myriad of QUCS .sch files from the past will load in QUCs Studio.


" First we kill all the Software Engineers.......!"

Anyone know if you can convert/import them?

J


Re: VK3CV 30THz full system demonstration.

John Fell
 

If it Quacks and waddles it's a Duck ......

John
G0API

Murray does not seem to know where these 1W 10GHz devices are ?

On Thu, 7 Jan 2021 at 16:26, g4bao <john@...> wrote:
Oh, it is a hot copper plate, isn't it!

I Just looked up the sensor Barry mentioned and I see that it's an infra red thermometer!

Hadn't quite sunk in what 30THz meant, ....Hmm.... but is it radio? (Ducks!)

:-)

J


   


Re: VK3CV 30THz full system demonstration.

g4bao
 

Oh, it is a hot copper plate, isn't it!

I Just looked up the sensor Barry mentioned and I see that it's an infra red thermometer!

Hadn't quite sunk in what 30THz meant, ....Hmm.... but is it radio? (Ducks!)

:-)

J


   


Re: VK3CV 30THz full system demonstration.

g4bao
 

No info on what his TX is?
Surely it's not just a hot copper plate is it?
If so I don't understand!

Anyone elucidate?

73
John
 


Re: Scatterpoint and RadCom columns request for input.

Murray Niman
 

Given the new EMF regs that Ofcom will confirm in a few weeks, you might not want 1W amps  in a 10GHz waveguide for Foundation, but mW and modest horns can still be educational/fun

73

  Murray G6JYB


Re: Scatterpoint and RadCom columns request for input.

Mike Willis
 

Hi John,

Sorry but all my recent microwave activity has been QO100 related and I think that's been done more than enough now. Having said that, have you covered microwave PAs recently? 
--
Mike G0MJW


Re: Scatterpoint and RadCom columns request for input.

Murray Niman
 

Hi Paul

2.4ghz gets wiped out by domestic usage.
Classic Hamnet is rather focused on fixed infrastructure trying to reinvent the internet and simply has never been attractive here. Innovating/hacking with Zigbee, Lora or adhoc mesh (or FPV) seems to be the trendy thing...  

   73

 Murray G6JYB


Re: Scatterpoint and RadCom columns request for input.

eightyelectric
 

Does the hamnet on 2.4GHz not have potential in the UK.

G6UAJ Paul longstaff

Sent from my Galaxy


Re: Scatterpoint and RadCom columns request for input.

John Fell
 

Where are the 1W devices available Murray - would be interested .

73
John
G0API

On Thu, 7 Jan 2021 at 15:23, Murray Niman <g6jyb@...> wrote:
Hi John
Some fresh guidance for beginners/intermediates would be preferable if possible? 
 - we have 1000s of new amateurs with access to 10GHz/1W and now a surge at intermediate. FPV and other modules are interesting. Hamnet though has no traction in the UK, not helped by the UK 5GHz licence allocations being too narrow (resulting in some DL/US-based mesh mods being illegal here)

73 and HNY

 Murray G6JYB


Re: Scatterpoint and RadCom columns request for input.

Murray Niman
 

Hi John
Some fresh guidance for beginners/intermediates would be preferable if possible? 
 - we have 1000s of new amateurs with access to 10GHz/1W and now a surge at intermediate. FPV and other modules are interesting. Hamnet though has no traction in the UK, not helped by the UK 5GHz licence allocations being too narrow (resulting in some DL/US-based mesh mods being illegal here)

73 and HNY

 Murray G6JYB


Re: VAT ... it looks like it's going to be difficult.

Robin Szemeti - G1YFG
 

Hi Trevor,

The reason you won't find a single remark about the USA is that we import very few smaller items from the USA,  the majority of foreign sellers on eBay etc are  Chinese, not American.

You are incorrect on the £135 limit thing ... below £135  the foreign seller has to collect UK VAT, and register for UK VAT .. or use an online marketplace like eBay or amazon who are already registered and will add the VAT on.

Above £135 the VAT is added at the border and collected by UPS/Fedex etc just like it is now.

As of July, the EU is adopting the same system, for all imports, so an American seller wanting to sell a $50 widget to a Dutch amateur will have to register for Dutch VAT ... or lie.


On Tue, 5 Jan 2021 at 20:03, M5AKA via groups.io <m5aka=yahoo.co.uk@groups.io> wrote:
Clint M0UAW wrote "Agree it was wide open to abuse (and still will be) but, despite all the complaints about 'them Chinese' abusing the system, I bet *nobody* ever volunteers to pay the extra duty."

It's strange people complain about China abusing the system but never a snide remark about USA and other countries doing the same way, sounds like Sinophobia.

If I'm now reading it correctly goods up to £135 are free of both VAT and Customs Duty if applicable (0% for electronics) in the UK. If someone overseas sends you a Gift below that threshold that is also free of VAT but if a small one-person business in Shenzhen wishes to earn a living they have to register with UK Gov HMRC and pay 20% tax.  I can well understand the number of parcels marked as "Gift" increasing.



BTW their was a comment about a 35,000 Euro threshold for VAT registration in the EU. The actual figure varies from country to country e.g. Netherlands has a more sensible 100,000 Euro threshold but that all changes on July 1 when EU countries all adopt a threshold of 0 Euros.

73 Trevor M5AKA



On Tuesday, 5 January 2021, 14:57:21 GMT, Clint Sharp <cjaysharp@...> wrote:


I may be unusual that I rarely ever buy anything worth more than a couple of quid from eBay or non UK sellers so even when the value was misdeclared on the CN22 I'm still comfortably under the old £15 limit and don't feel any guilt for it not having the correct price on it.

Agree it was wide open to abuse (and still will be) but, despite all the complaints about 'them Chinese' abusing the system, I bet *nobody* ever volunteers to pay the extra duty.

On Tue, 5 Jan 2021 at 14:35, Robin Szemeti - G1YFG <robin@...> wrote:
I think the thrust of it is mainly to stop the Chinese who have been taking the p155 with VAT for years.  I have never, ever had a parcel delivered from China with a correct value declared. It is always £5 gift, or "commercial sample"  ... collecting it directly on eBay/Amazon etc will solve that, and rightly so.

What I suspect they will do is simply warehouse the goods in the UK, with a low declared value on import, and then pretend to be UK sellers, with a turnover less than the VAT threshold.

I understand why they have done it, and thinking about it, I can see that if they had allowed packages to be sent VAT unpaid and had UPS or whoever collect the VAT, then the Chinese would have just put "value £5" on everything.

For now, I have set up a Mailboxde.com address, I'll try that and see how it works out. 

On Tue, 5 Jan 2021 at 14:21, Clint Sharp <cjaysharp@...> wrote:
Looks like the era of easily available cheap components, modules and goods is over, there are a number of Chinese companies setting up warehouses in the UK though, I know of at least two local to me in Manchester but I've no idea how it will affect their prices, I suspect they'll float upwards to meet the mail order guys.

I'm afraid I have zero confidence that a petition will have any effect, the e-petition website is just a sop to people who still believe government is accountable, they just ignore or even laugh at petitions with many tens of thousands of signatures so I don't think one signed by a few hundred or even a couple of thousand hams will even register in their vision.



On Tue, 5 Jan 2021 at 13:54, Dave via groups.io <davidnewman55=icloud.com@groups.io> wrote:
Ron,
I can support it.
Dave G4GLT. 


On 5 Jan 2021, at 13:50, Ron <g6bmy@...> wrote:

The only way now is to bombard your MP with emails AND start a petition on the government website for a full debate with inthe commons - not just a decision by a bunch of jumped up prats.

A such I have worded a petition on the wbesite but need 5 persons to support it, via a link I will supply, before the petitio can go live.

Any takers?

Ron, G6BMY



--
Clint. M0UAW IO83

No trees were harmed in the sending of this mail. However, a large number of electrons were greatly inconvenienced.


--
Robin Szemeti - G1YFG



--
Clint. M0UAW IO83

No trees were harmed in the sending of this mail. However, a large number of electrons were greatly inconvenienced.


--
Robin Szemeti - G1YFG

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