Re: Networking without a hub or a router/repeater

Ed Carp (erc@dal1820.computek.net)
Sun, 25 Feb 1996 17:37:58 +0000


On Mon, 26 Feb 1996, Paul Gortmaker wrote:

> 50 ohm cable *is* what you want. People who have tried to stuff an
> ethernet signal down 75 ohm "cable T.V." wiring will vouch for that.
> (Mind you I am not sure whether they tried 75 ohm terminators as well. 8)

I sit corrected ;)

> The IEEE 802.2 spec approves coax that is marked as follows:
>
> 802.3 10Base2 (50 ohm, stranded tinned core)
> RG-58 a/u (50 ohm, stranded tinned core)
> RG-58 c/u (50 ohm, stranded tinned core)
>
> The IEEE 802.2 spec does not approve of 50 ohm solid core cables, such
> as RG-58 or RG-58 /u coax.
>
> Belden 8259 is equivalent to RG-58 a/u coax.

If 50 ohm is what you want, might want to try Belden 9913 - the loss for
100 feet is just under 1.5 dB.

I wonder why they don't like solid core coax?

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