"Dave Plowman (News)"
Phil Allison

I think most epeople referred to them as C451 mics but for the record,
it was C451 bodies with CK1 capsules.

** CK1 = basic cardiod capsule.

By far and away the most common combination was a 451 with CK1 capsule -
in Alan's and my side of the industry anyway - so there was no need to
call it anything other than a 451.


** Local jargon.

The handmic version was called a 421 omni.


** Kindly post a link to one of them.

The hand held mic 451 capsule was the CK5 - essentially a CK1 capsule
fully sprung and wind shielded.



..... Phil

In article ,
Phil Allison wrote:

"Dave Plowman (News)"
Phil Allison

I think most epeople referred to them as C451 mics but for the record,
it was C451 bodies with CK1 capsules.

** CK1 = basic cardiod capsule.

By far and away the most common combination was a 451 with CK1 capsule -
in Alan's and my side of the industry anyway - so there was no need to
call it anything other than a 451.


** Local jargon.

The handmic version was called a 421 omni.


** Kindly post a link to one of them.

Sorry, typo. Should have been 451 omni.

The hand held mic 451 capsule was the CK5 - essentially a CK1 capsule
fully sprung and wind shielded.

In TV at the time we normally used omnis as hand mics. Not the same sort
of levels of foldback you get these days. An omni is far better for hand
held use - less 'popping' and level changes if it's moved around.

Look for CK22 for that capsule. Built in windshield so small 'in shot'.

--
*You are validating my inherent mistrust of strangers

Dave Plowman London SW
To e-mail, change noise into sound.

In article 4a2816f3.105242859@localhost, Don Pearce
scribeth thus
On Sat, 30 May 2009 11:21:17 GMT, "Brian Gaff"
wrote:

If you lose the screen you will probably get radio Moscow instead..grin.

Brian

At least that might be interesting. It's always minicabs.

d

When did you hear minicab radio breakthrough last?..

Seeing that AM has been out of fashion for some 20 years now?.

At least in the UK...

--
Tony Sayer

In article , Dave Plowman (News)
scribeth thus
In article ,
Brian Gaff wrote:
If you lose the screen you will probably get radio Moscow instead..grin.


You'd be surprised. Some time ago I made up 100v line XLR cables using
ordinary mains 2 core flex. Cheaper than screened cable. And found one in
use with a dynamic hand mic - because it was a nice shiny white, rather
than the more usual mic cable grey or black. And apparently worked just
fine. In other words it's the balancing that gives the majority of the
rejection of spurious stuff.



Indeed it is .. we once used around three miles of phone cable overhead
and underground for an RSL and apart from a bit of "top" loss its was
very quiet indeed..
--
Tony Sayer

"Dave Plowman (News)"

You'd be surprised. Some time ago I made up 100v line XLR cables using
ordinary mains 2 core flex. Cheaper than screened cable. And found one in
use with a dynamic hand mic - because it was a nice shiny white, rather
than the more usual mic cable grey or black. And apparently worked just
fine. In other words it's the balancing that gives the majority of the
rejection of spurious stuff.


** If you wire a twin shielded mic cable in unbalanced mode - there is no
problem either.

Proving beyond doubt that balancing is irrelevant to noise rejection with
mics.

However - *IF* an unshielded pair is used for a mic, balancing ( plus
good RF rejection) becomes critical to a usable result.




..... Phil

On Sun, 31 May 2009 13:21:11 +0100, tony sayer
wrote:

In article 4a2816f3.105242859@localhost, Don Pearce
scribeth thus
On Sat, 30 May 2009 11:21:17 GMT, "Brian Gaff"
wrote:

If you lose the screen you will probably get radio Moscow instead..grin.

Brian

At least that might be interesting. It's always minicabs.

d

When did you hear minicab radio breakthrough last?..

Seeing that AM has been out of fashion for some 20 years now?.

At least in the UK...

That's probably when I last heard it! In fact not since I last used
valves and suffered from a rectifying contact in the socket.

d

On Sun, 31 May 2009 13:22:33 +0100, tony sayer
wrote:

Indeed it is .. we once used around three miles of phone cable overhead
and underground for an RSL and apart from a bit of "top" loss its was
very quiet indeed..

I was once told that the cables on telephone posts are arranged to
form a twisted pair. (I.e. the cables move from insulator to
insulator so that they twist around each other.)

Pardon my ignorance, but what is an RSL?

Thanks,

--
Chris Isbell
Southampton, UK

In article , Chris Isbell
scribeth thus
On Sun, 31 May 2009 13:22:33 +0100, tony sayer
wrote:

Indeed it is .. we once used around three miles of phone cable overhead
and underground for an RSL and apart from a bit of "top" loss its was
very quiet indeed..

I was once told that the cables on telephone posts are arranged to
form a twisted pair. (I.e. the cables move from insulator to
insulator so that they twist around each other.)

Well they are twisted to stop crosstalk like the wires in a CAT 5
cable..

Pardon my ignorance, but what is an RSL?


Sorry .. Restricted Service Licence a form of short term broadcast
licence usually for FM radio normally issued for some event or other.

In this instance with was used to link two studios together...
Thanks,


--
Tony Sayer

Dave Plowman (News) wrote:

You'd be surprised. Some time ago I made up 100v line XLR cables using
ordinary mains 2 core flex. Cheaper than screened cable. And found
one in use with a dynamic hand mic - because it was a nice shiny
white, rather than the more usual mic cable grey or black. And
apparently worked just fine. In other words it's the balancing that
gives the majority of the rejection of spurious stuff.


I'm told that Cat 5 Ethernet cable also works great for audio if you need
several channels, presumably because the pairs are tightly twisted. The
other advantage is that it is relatively cheap.

"Chris Isbell" wrote in message
...
On Sun, 31 May 2009 13:22:33 +0100, tony sayer
wrote:

Indeed it is .. we once used around three miles of phone cable overhead
and underground for an RSL and apart from a bit of "top" loss its was
very quiet indeed..

I was once told that the cables on telephone posts are arranged to
form a twisted pair. (I.e. the cables move from insulator to
insulator so that they twist around each other.)

Pardon my ignorance, but what is an RSL?

Thanks,

--
Chris Isbell
Southampton, UK

A Restricted Service License. Ofcom, the UK government Regulator for
Broadcasting, issues temporary licenses for special events. Typically they
are for 30 days in any one year, on FM, and usually power is limited to
25watts ERP or less.

Some RSLs, like our Hospital Radio Station are long-term, but we are
restricted to broadcasting to the local Hospital on AM, and are not allowed
to acknowledge on-air any listeners from outside the Hospital grounds that
may be listening to us. By going on the Internet, we can now acknowledge
outside listeners, but must be careful not to imply that they heard us on
1350.

RSLs are an expensive way to get on-air, as Ofcom charge a lot of money,
£2000 if I remember correctly for 30 days broadcasting a year or to a tiny
area.

S.
--
http://audiopages.googlepages.com