RE: [neonixie-l] power supplies and radio interference

[Paul Andrews]

I have several AM and FM radios and I have not experienced any noticeable 
interference from the various nixie clocks. On the other hand, I have experi nc 
d quite a lot from various LED lights and laptops. All of it is typically short 
range (several feet/meters).

This article discusses a radio battery replacement (these batteries were 90V!): 
https://www.dos4ever.com/battery/battery.html

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/26efc12c-16c3-48ad-ab46-46a8a9005994%40googlegroups.com.

RE: [neonixie-l] power supplies and radio interference

[johnk]

Sigh, Tempest. "We" used to service some Tempest spec sites. 
Btw, you need a security clearance to be able to access/read the spec too  :-))
And, some of our guys just would not keep the spares cabinet locked.

I agree that shielding/filtering the supply is not impossible, but is so much 
harder than having to do nothing when it comes to the linear regulator 
supplies. Apparently the users aren't bothered by the level of noise from diode 
steps [eg zeners].

John K

-Original Message-
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of Bill Notfaded
Sent: Friday, 16 August 2019 15:43
To: neonixie-l
Subject: RE: [neonixie-l] power supplies and radio interference

You can always build a little tempest facility around it.  Like a small Faraday 
cage.

Bill

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/897d7d9a-88e5-40d0-bbec-7bc9eae61da5%40googlegroups.com.

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/004a01d553fd%2489dde670%249d99b350%24%40internode.on.net.

RE: [neonixie-l] power supplies and radio interference

[Bill Notfaded]

You can always build a little tempest facility around it.  Like a small Faraday 
cage.

Bill

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/897d7d9a-88e5-40d0-bbec-7bc9eae61da5%40googlegroups.com.

RE: [neonixie-l] power supplies and radio interference

[johnk]

Thanks for the reply David – I thought of you when I posted. 

I am keen to get some replies from HF listeners where particular 
“brand”/circuit supplies get commented on.

Any idea how your watch [supply] performs [when displaying] around HF comms?

 

John K

 

From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On 
Behalf Of David Forbes
Sent: Friday, 16 August 2019 14:11
To: NeoNixie
Subject: Re: [neonixie-l] power supplies and radio interference

 

I work in radio astronomy, and I wear a Nixie watch. No problem. 

 

But seriously, it is possible to build a low-emission switching supply. It 
takes time and care and shielding. High voltage is more of a challenge. 

 

 

On Fri, Aug 16, 2019, 12:27 AM johnk  wrote:

>From time to time I come across discussions where radio restorers [domestic 
>and mil] want a low current valve-voltage (tube-voltage) power supply.

I often suggest that they look at the various Nixie supplies discussed here.

 

The usual response is along the lines that ANY “switching” or 
not-linear-regulator supply will cause too much “noise” on the radio bands 
involved.

 

Are there any active ticketed amateur radio guys here who have had first-hand 
experience of this topic and are willing to share their wisdom?

 

John K

Australia.

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/001501d553ea%24e0530ed0%24a0f92c70%24%40internode.on.net
 
<https://groups.google.com/d/msgid/neonixie-l/001501d553ea%24e0530ed0%24a0f92c70%24%40internode.on.net?utm_medium=email_source=footer>
 .

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/CAPbqtvdqOmNa8sMGF%3Du5A-DnCHpB33FjoBWFy%3DiSJCZfV1mxSg%40mail.gmail.com
 
<https://groups.google.com/d/msgid/neonixie-l/CAPbqtvdqOmNa8sMGF%3Du5A-DnCHpB33FjoBWFy%3DiSJCZfV1mxSg%40mail.gmail.com?utm_medium=email_source=footer>
 .

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/002b01d553f7%2432df7330%24989e5990%24%40internode.on.net.

Re: [neonixie-l] power supplies and radio interference

[David Forbes]

I work in radio astronomy, and I wear a Nixie watch. No problem.

But seriously, it is possible to build a low-emission switching supply. It
takes time and care and shielding. High voltage is more of a challenge.


On Fri, Aug 16, 2019, 12:27 AM johnk  wrote:

> From time to time I come across discussions where radio restorers
> [domestic and mil] want a low current valve-voltage (tube-voltage) power
> supply.
>
> I often suggest that they look at the various Nixie supplies discussed
> here.
>
>
>
> The usual response is along the lines that ANY “switching” or
> not-linear-regulator supply will cause too much “noise” on the radio bands
> involved.
>
>
>
> Are there any active ticketed amateur radio guys here who have had
> first-hand experience of this topic and are willing to share their wisdom?
>
>
>
> John K
>
> Australia.
>
> --
> You received this message because you are subscribed to the Google Groups
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to neonixie-l+unsubscr...@googlegroups.com.
> To view this discussion on the web, visit
> https://groups.google.com/d/msgid/neonixie-l/001501d553ea%24e0530ed0%24a0f92c70%24%40internode.on.net
> 
> .
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/CAPbqtvdqOmNa8sMGF%3Du5A-DnCHpB33FjoBWFy%3DiSJCZfV1mxSg%40mail.gmail.com.

[neonixie-l] power supplies and radio interference

[johnk]

>From time to time I come across discussions where radio restorers [domestic
and mil] want a low current valve-voltage (tube-voltage) power supply.

I often suggest that they look at the various Nixie supplies discussed here.

 

The usual response is along the lines that ANY "switching" or
not-linear-regulator supply will cause too much "noise" on the radio bands
involved.

 

Are there any active ticketed amateur radio guys here who have had
first-hand experience of this topic and are willing to share their wisdom?

 

John K

Australia.

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/001501d553ea%24e0530ed0%24a0f92c70%24%40internode.on.net.