Al Klein schrieb:

3db is 50%, or one "S" unit - easy enough to notice. Actually, the
receiver capture ratio is the smallest amount you'll notice, so the
better the receiver, the smaller the change it takes to make a big
difference.



6 dB is the difference of one S-Unit. That's 25% of the Signal with one
more of S-Units.
For reception only purposes it's insiders knowledge to use _much_
cheaper lowloss tv-cable with 75 ohms runnig to a discone antenna. You
will hardly notice any loss for impedance mismatching as the impedance
curve of consumer grade scanners vary a lot from the 50 ohms.

Volker Tonn wrote:

Al Klein schrieb:

3db is 50%, or one "S" unit - easy enough to notice. Actually, the
receiver capture ratio is the smallest amount you'll notice, so the
better the receiver, the smaller the change it takes to make a big
difference.


6 dB is the difference of one S-Unit. That's 25% of the Signal with one
more of S-Units.
For reception only purposes it's insiders knowledge to use _much_
cheaper lowloss tv-cable with 75 ohms runnig to a discone antenna. You
will hardly notice any loss for impedance mismatching as the impedance
curve of consumer grade scanners vary a lot from the 50 ohms.

Use the very best 50 ohm coax you can afford.

dxAce
Michigan
USA

dx'tard wrote:

Use the very best 50 ohm coax you can afford.

bull****...

Volker Tonn wrote:

dx'tard wrote:

Use the very best 50 ohm coax you can afford.

bull****...

Well, in your previous post you stated that "You will hardly notice any loss..."

That implies that one WILL notice...

It's been my experience that the best thing to do would be to go with the best
50 ohm coax you can afford.

But heck, I've only been doing this darn radio stuff for a few months, so what
the hell do I know?

dxAce
Michigan
USA

dxAce schrieb:


Volker Tonn wrote:


dx'tard wrote:


Use the very best 50 ohm coax you can afford.

bull****...


Well, in your previous post you stated that "You will hardly notice any loss..."

That implies that one WILL notice...

Loser! You should quote correctly -not destroying the content- 'tard.
A 50 ohm AirComm-plus cable costs three times as much as a lowloss 75
ohm TV-cable with the same loss.
And it gives pretty much the same results -if not better- on a broadband
antenna like a discone on consumer grade VHF/UHF-receivers wich do not
have a straight 50-ohm impedance. In most cases it varies between 30 and
150 ohms depending on the frequency you are receiving. So there is a
good chance a 75 ohm cable works even better than a 50 ohm cable with
the same loss. In worst case you will have an impedance mismatch loss of
3dB, but in most cases you will have a 3dB win depending on the scanner
you are using and frequency you are receiving.
There are few scannists who would buy or can afford a 0,70 US$/ft cable
for a 100ft run. So a good (lowloss!) TV-cable is really worth a try.

Volker Tonn wrote:

dxAce schrieb:


Volker Tonn wrote:


dx'tard wrote:


Use the very best 50 ohm coax you can afford.

bull****...


Well, in your previous post you stated that "You will hardly notice any loss..."

That implies that one WILL notice...

Loser! You should quote correctly -not destroying the content- 'tard.
A 50 ohm AirComm-plus cable costs three times as much as a lowloss 75
ohm TV-cable with the same loss.
And it gives pretty much the same results -if not better- on a broadband
antenna like a discone on consumer grade VHF/UHF-receivers wich do not
have a straight 50-ohm impedance. In most cases it varies between 30 and
150 ohms depending on the frequency you are receiving. So there is a
good chance a 75 ohm cable works even better than a 50 ohm cable with
the same loss. In worst case you will have an impedance mismatch loss of
3dB, but in most cases you will have a 3dB win depending on the scanner
you are using and frequency you are receiving.
There are few scannists who would buy or can afford a 0,70 US$/ft cable
for a 100ft run. So a good (lowloss!) TV-cable is really worth a try.

Shove it, NAZI boy!

dxAce
Michigan
USA

On Tue, 26 Oct 2004 18:38:37 -0400, dxAce wrote:



Volker Tonn wrote:

dxAce schrieb:


Volker Tonn wrote:


dx'tard wrote:


Use the very best 50 ohm coax you can afford.

bull****...


Well, in your previous post you stated that "You will hardly notice any loss..."

That implies that one WILL notice...

Loser! You should quote correctly -not destroying the content- 'tard.

[snip]


Shove it, NAZI boy!


Well *this* sure went downhill fast.

dx'tard wrote:


Shove it, NAZI boy!



You're a LOSER, 'tard.
^^^^^^^^^^^^^^^^
DEFINATELY!
^^^^^^^^^^^^

On Tue, 26 Oct 2004 21:56:08 +0200, Volker Tonn
said in rec.radio.scanner:

Al Klein schrieb:

3db is 50%, or one "S" unit - easy enough to notice. Actually, the
receiver capture ratio is the smallest amount you'll notice, so the
better the receiver, the smaller the change it takes to make a big
difference.

6 dB is the difference of one S-Unit.

Oops. It was late. You're correct, of course.