For QRO TX on MF and LF, do people feel the need to disconnect the ADSL
router
from the telephone line lest induced pick-up should blow it up?

In message , gareth
writes
For QRO TX on MF and LF, do people feel the need to disconnect the ADSL
router
from the telephone line lest induced pick-up should blow it up?

It all depends on how QRO is QRO, and the proximity of the antenna to
the phone/ADSL/LAN wiring.

Even when running moderate powers (100W or less), a lot of amateurs find
they get disconnected from the internet when they transmit. Multi-turn,
large-diameter ferrite ring chokes on all the connections to the router
usually helps quite a bit.

But as for actual damage, my only experience is when lightning struck
(or struck near) the overhead phone lines about quarter of a mile away.
There was a simultaneous 'click' from my ADSL modem, and it immediately
stopped working (but no sign of damage).




--
Ian

On Fri, 22 Jan 2016 10:22:09 +0000, Ian Jackson
wrote:

In message , gareth
writes
For QRO TX on MF and LF, do people feel the need to disconnect the ADSL
router
from the telephone line lest induced pick-up should blow it up?

It all depends on how QRO is QRO, and the proximity of the antenna to
the phone/ADSL/LAN wiring.

Even when running moderate powers (100W or less), a lot of amateurs find
they get disconnected from the internet when they transmit. Multi-turn,
large-diameter ferrite ring chokes on all the connections to the router
usually helps quite a bit.

But as for actual damage, my only experience is when lightning struck
(or struck near) the overhead phone lines about quarter of a mile away.
There was a simultaneous 'click' from my ADSL modem, and it immediately
stopped working (but no sign of damage).



You won't do any damage, but Ian is quite right, the router may well
crash (and may also disrupt ADSL with some of your neighbours)
If you have the older faceplate disconnecting the bellwire (usually
Orang/white) may improve things and you may well need some specialist
filters as will your neighbours!


http://qso365.co.uk/wp-content/uploa...DSL-filter.pdf

En el artículo , Ian Jackson
escribió:

Even when running moderate powers (100W or less), a lot of amateurs find
they get disconnected from the internet when they transmit.

And what about their neighbours who also have to suffer poor ADSL speeds
and disconnections?

These are the same hypocritical hams whinge about the RF hash emitted by
power line adapters.

--
(\_/)
(='.'=) Bunny says: Windows 10? Nein danke!
(")_(")

On 22/01/16 14:56, Mike Tomlinson wrote:
En el artículo , Ian Jackson
escribió:

Even when running moderate powers (100W or less), a lot of amateurs find
they get disconnected from the internet when they transmit.

And what about their neighbours who also have to suffer poor ADSL speeds
and disconnections?

These are the same hypocritical hams whinge about the RF hash emitted by
power line adapters.


Well, hopefully, the responsible ones at least, check.

However, legally, the situation is an 'interesting' one.

If your radio kit isn't transmitting undue out of band emissions, you
shouldn't get any grief anyway.

If the issue is purely due to in band transmissions, then the onus is
one the equipment with the problem, or its owner/maker.

That is what normally happens even with things like TVs and radios, and
they are 'protected'. Things like stereos aren't and ADSL kit would
fall into that category. Not that I'm suggesting responsible amateurs
should use that as a first line of defence.