Search found 136 matches

by Appin
Sat May 01, 2021 11:11 pm
Forum: Equipment
Topic: Geiger Counters & Dosimeters
Replies: 3
Views: 315

Re: Geiger Counters & Dosimeters

Hi I agree you need to think about what you want the geiger counter / dosimeter to tell you and what budget you have. For the first you need some knowledge of dosimetry. Normal background radiation gives a dose of approx 2,700 microsieverts per year in the UK. That's 0.3 microsieverts per hour. Also...
by Appin
Thu Feb 18, 2021 4:18 pm
Forum: Medical and Healthcare
Topic: No jab, no job
Replies: 37
Views: 1807

Re: No jab, no job

Actually it's nothing new. Want to work in the health service? Hepatitis B immunisation is effectively mandatory. I quote "All HCWs who undertake Exposure Prone Procedures (EPPs) must provide evidence that they are not a hepatitis B infection risk and must provide proof of antigen and antibody level...
by Appin
Wed Feb 17, 2021 11:38 am
Forum: Radio Communications
Topic: PTT. Simples...
Replies: 29
Views: 2010

Re: PTT. Simples...

Dear Jenny101, Firstly, please understand I was not having a go at you. The legalities of radio transmission are complex and people can innocently get into problems. PMR has a very specific role. There are many occasions where a simple short range radio system is useful. PMR came as a legal means to...
by Appin
Wed Feb 17, 2021 9:03 am
Forum: How are you preparing
Topic: What made you become a prepper?
Replies: 24
Views: 1574

Re: What made you become a prepper?

Long term thing for me. Child during power cuts from Miners strikes. So remember using candles and torches in short supply. Cold War , I remember getting a rather feeble leaflet on nuclear survival by sending a postal order for 5 shillings. Later got my copy of Barry Popkess "The Nuclear Survival Ha...
by Appin
Wed Feb 17, 2021 8:53 am
Forum: Medical and Healthcare
Topic: Who's getting the vaccine
Replies: 92
Views: 5688

Re: Who's getting the vaccine

Yesterday I got a text from GP offering vaccine. ( I am in group 6 due to diabetes). Followed link to a national NHS site and booked for later on today. All booked in 5 minutes and at a place less than 2 miles away. I'll let you know how I feel but my older brother had his a couple of weeks ago and ...
by Appin
Sun Feb 14, 2021 6:31 pm
Forum: Radio Communications
Topic: PTT. Simples...
Replies: 29
Views: 2010

Re: PTT. Simples...

Legally the PMR standard requires a fixed antenna. The idea is to make them idiot proof so modification is not allowed. A radio amateur who used their own equipment to transmit on the PMR frequencies would be in breach of their licence. https://en.wikipedia.org/wiki/PMR446 https://web.archive.org/we...
by Appin
Mon Jan 25, 2021 6:31 pm
Forum: How are you preparing
Topic: What Preps are you doing this week? Part 8.
Replies: 337
Views: 22744

Re: What Preps are you doing this week? Part 8.

Strange is a genuine particle. It is one of six "Quarks" Rejoicing in the names Strange, Up, Down, Top, Bottom and Charmed. Do you need further proof physicists are weird? Quarks put together in different groups make up the hadrons ( as in large hadron collider). the best known hadrons are protons a...
by Appin
Sun Jan 24, 2021 5:02 pm
Forum: How are you preparing
Topic: What Preps are you doing this week? Part 8.
Replies: 337
Views: 22744

Re: What Preps are you doing this week? Part 8.

Urban legend.

Hahn never actually made a true reactor just a neutron source that made some elements.

https://en.wikipedia.org/wiki/David_Hahn

Appin

PS Family background meant I got an early education in radiation. I know my REMs / Rads/ Sieverts and Greys.
by Appin
Sun Oct 25, 2020 9:53 pm
Forum: Radio Communications
Topic: Bath based Distance learning for Advanced Licence
Replies: 1
Views: 864

Bath based Distance learning for Advanced Licence

The highly respected Bath Radio Amateur Training courses are restarting. Anyone who has got the first two licences ( Foundation and Intermediate) should consider doing the advanced with Steve Hartley and his crew. Their results are excellent. They got me through it so they are good. https://badarc.w...
by Appin
Thu Aug 27, 2020 10:59 pm
Forum: Medical and Healthcare
Topic: WHO guidance on masks
Replies: 0
Views: 1534

WHO guidance on masks

This is the current WHO guidance on masks. Despite a lot of unfair criticism they do the best they can and this guidance is likely as good as it can be. It is long and technical but covers the uncertainty. They rightly take a slight side swipe at all the talk about aerosols which may or may not be i...