The clubs officers and committee have decided to reduce our previous precovid full NARC membership which was £20 - £30 per year to just £10 per member for 2023. We can do this principally because we have more members than we used to have and we physically meet less often than we used to and although the school hire costs to us have risen by more than 30% we do not incur any costs for producing NARC Live online. (NB The £5 rate for 2022 was set in October 2021 and was based on the clubs costs of having no in person meetings).
We appreciate the huge cost of living pressures which are upon us all, so we are taking a leap of faith in reducing our full membership price to the lowest it has been since the 1980's, in the hope and belief that everyone will continue their membership of NARC for a very modest outlay to a club which meets, arranges events and does something online for at least 50 weeks of the year - equivalent to 20p per week.
Club Contesters Note that if you are a contester for NARC please remember you need to be an up to date paid member to enter valid scores into the club championship contests.
So we ask you to rejoin (or join) NARC now for 2023 and pay us ideally by direct bank transfer - be sure to use your callsign/surname as reference. Please also complete and email the membership form if you are not already current member so that we can register you.
(NB - As Mark asks please pay by BACS bank transfer if you possibly can because even though we are a voluntary organisation Paypal still take a significant commission along with the bank which also charges for each Cheque payment because our account is classed as a business)
Details are below or see:
http://norfolkamateurradio.org/index.php/membership/join-us
Mark G0LGJ - Treasurer
We welcome new members of any age, gender, and ability, from complete beginners to licensed amateurs.
If you are a current paid-up member you do not need to complete the form again, but just pay your annual subscription using the methods below.
Ways to pay:
Pay directly to our Bank - Preferred please
Bank: HSBC
Name: Norfolk Amateur Radio Club
Sort Code: 402008
Account: 31432222 (this is classed as a business account - some banks ask)
IMPORTANT - please include your callsign as the reference or if you are not licensed your initial and surname and email the treasurer as below
OR
Cheque Payable to "Norfolk Amateur Radio Club"
Please use BANK Transfer if possible as banks charge us for each cheque
Posted to address below with a note of your name and callsign:
Mark Taylor G0LGJ
c/o NARC
6 Welden Road
Scarning
Dereham
Norfolk
NR19 2UB
OR
Paypal
Use our online shop to pay via Paypal, you will need to login to website to complete.
http://norfolkamateurradio.org/index.php/on-line/shop/category-listing/product/687-online-membership
An additional charge incurred to cover Paypal costs.Paypal charge 3.1% + .30p per transaction. Totals £10.61
If you wish to pay direct using email and Paypal please pay £10.00 to This email address is being protected from spambots. You need JavaScript enabled to view it. and use Friends and Family Option please be sure to use your callsign as a reference.
If you pay via bank transfer please inform the Membership Secretary via email and give the reference you used in your online transaction as banks do not always pass on references.
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Conditions that qualify a member for concessionary membership can be found in the constitution or shown on the form
Need Filter parts?
(This article is also updated with members feedback lower down)
Several people have asked where they can buy parts from for the Filter kit, either because they missed the NARC bulk buy in December, or they want to buy a few extra parts.
The article as described on NARC Live was recorded and the recording can be seen here:
https://www.youtube.com/watch?v=LVTuBsj3U0o
Ian's GM3SEK website with excellent projects - scroll down for the Filter project including the complete slide set of the presentation which shows construction in more detail.
The following are the main components of the kit as specified by Ian along the suppliers you can buy them from which are either used by Ian and or myself when I organised the NARC bulk buy. They are not necessarily always the cheapest supplier, but they are consistent suppliers and all parts are in stock as I write this on 18.1.22.
73 de, David G7URP
Enclosure
CE-TEK GR17012 Suggested supplier: www.cpc.co.uk CPC code EN84544
https://cpc.farnell.com/ce-tek/gr17012/abs-enclosure-170x170x75mm-ip65/dp/EN84544?CMP=TREML007-003
Cable Gland (2 per kit)
ProPower PG-11 Black Suggested Supplier: www.cpc.co.uk CPC code PG-11 Black
https://cpc.farnell.com/pro-power/pg-11-black/pg11-cable-gland-black/dp/CBBR7352
Mains filter
Schaffner FN2030-16-06 Suggested supplier: Mouser.co.uk Mouser code: 631-FN2030-16/06
https://www.mouser.co.uk/ProductDetail/Schaffner/FN2030-16-06
Main Ferrite
Fair-Rite core 0431177081 Suggested supplier: Mouser.co.uk Mouser code: 623-0431177081
https://www.mouser.co.uk/ProductDetail/Fair-Rite/0431177081
Smaller Ferrite (2 per kit)
Fair-Rite core 2643167851 Suggested supplier: Mouser.co.uk Mouser code: 623-2643167851
https://www.mouser.co.uk/ProductDetail/Fair-Rite/2643167851
Tip: Label your Ferrites with their part numbers as soon as you receive them as they look identical to others yet perform very differently!
Cable
High temperature flex such as 3093Y 2.5mm is recommended for the filter and this is available from several sources online and locally, eg Screwfix supply 5m lengths as below for collection from a local branch and you will need at least 3m for the filter as described.
https://www.screwfix.com/p/time-3093y-white-3-core-2-5mm-flexible-cable-5m-coil/80786
Cable update 3.2.22:
Thanks to John 2E0TWQ who shares that Screwfix are currently out of stock but he found it available on eBay under item number 202336536417
David G7URP's buying notes
Note that Mouser has warehouses in Germany and USA but currently if you order over £45 shipping is free and VAT prepaid - the £45 should be exceeded if you purchase the mains filter and ferrites from them all at once.
This information was my experience and is offered in good faith but neither NARC or I can accept responsibility for any errors or problems ordering parts or performance of the filter etc.
David G7URP 18.1.22
NARC Members additional feedback on the Mains filter which came in after the show...
From John 2E0TWQ:
A very useful video showing how to make the filter:
https://www.youtube.com/watch?v=ECogK3pCp28
And a surplus filter which might be useful as found on eBay but the seller has a large quantity:
https://www.ebay.co.uk/itm/361843251381
From Ralph 2M0RHT
I attach photos which I hope help others. It works for me so I must be doing something right. A bit of experimentation does no harm. For me, the + and - go through the filter therefore the earth should do the same. Therefore I constructed my filter as per the photo. Hope this helps others.
From Malcolm G3PDH:
David, a very interesting discussion on Wednesday.
Just to reiterate my points, Firstly there seemed to be debate on some reflectors about which way round the metal can filter went. I assumed that LINE was the mains in and LOAD the output to the toroidal and output.
My mains earth connects through from the earth tag on the can filter to the cables going around the toroids and to the mains output from the filter. I have not connected that earth to anywhere else such as an external earth.
A definitive circuit diagram would be useful and confirmation as to the direction of the can filter.
As I said I don’t seem to have any mains borne interference but decided to keep it in circuit as good engineering practice and it could help with any RF going back into the mains from the TX, particularly the Linear Amp.
From Bob G7JTZ:
Wound my cable as tight as I could and just that bit more heated and left for 30mins before releasing stayed good and tight.
Once done it made a remarkable difference S1 down at least so can mark as a 1 from me.
Much cleaner signals coming in especially on top band. Pictures show in working position running just radio power supply and its computer system
Amazing what difference it made! Used other ferrites to wrap onto power lead for computer and coax cables
One problem I had was that I have a outside motion light switch which when I did transmit on 80mts it switch on the outside lights
Which to me was no problem but because our front door has a small window in and the light shone through
My wife got fed up with keep going to the door to see who was there?? Or wasn’t?, But all seems ok now?!
All these events
• Facebook Live:
www.facebook.com/norfolkamateurradioclub/
• BATC Streaming service:
www.batc.org.uk/live/NARC
Plus nets every Monday:
19.30: Monday night VHF net on GB3NB
20.30: CW Net on 3.543MHz
Use the links below to contact us
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Exam Sec
CLUB MEETINGS:
In person and online with NARC Live!
Following the Covid pandemic the club has changed where it meets, though it is still every Wednesday through the year.
Online:
Approximately every other Wednesday the club now broadcasts its own magazine show NARC Live! Wednesday with news, features, talks and guests.
It is streamed online live from 19.30 UK local time at the following places and anyone is welcome to watch and join in, not just NARC members:
• Facebook Live:
www.facebook.com/norfolkamateurradioclub/
• BATC Streaming service:
www.batc.org.uk/live/NARC
In person:
The club physically meets on the other Wednesdays in the sixth form centre of the City of Norwich School, Eaton Road, Norwich, NR4 6PP from 1900-2130 UK local time.
We welcome anyone of any age, gender or ability and who enjoys experimenting with radio and electronics to come and meet us and see what we do in our hobby.
Please see above ONLINE tab for details of the club programme and below this piece for contacts of club official.
WATCHING PREVIOUS NARC LIVE's...
If you missed a NARC Live we now we record most shows in the studio and upload them to Youtube within 2 days. So you can watch almost any previous recorded NARC Live show by going to YouTube, searching for "Norfolk ARC", click on Videos and choose the programme you want to watch. https://www.youtube.com/c/norfolkamateurradio/videos