Roger (K8RI) wrote:
>
> On 6/18/2010 8:51 PM, jimlux wrote:
>> Roger (K8RI) wrote:
>>
>>>
>>
>>> Unfortunately (I'm using that word a lot) all this work here has a
>>> flaw. The stereo equipment (in the living room), the computers (in the
>>> living room, den, and shop), and the ham stations (in the den and shop)
>>> are all tied together via CAT5 and CAT6 network cables, and coax cables
>>> from the antennas on two different towers that feed the stereo,
>>> satellite receivers (living room and shop), stereos (living room and
>>> shop), OTA TV sets (living room, family room in basement, and shop). To
>>> top it off the house and shop have different electrical feeds from the
>>> power company, but the grounds for both are tied together with the
>>> grounding system for the towers.
>>>
>> This *is* the problem.. one has network cabling, phone lines, etc. all
>> distributed sort of haphazardly throughout the house, so it's hard to
>> establish a reference point to tie everything to.
>>
>> (A good argument for wireless LAN, BTW..
> I would dearly love to go wireless, but it's just too slow for backups
> across the network. There are improving the speed, but still have a ways
> to go.
You need more than 50-100 Mbps? Well..if you're using gigE, then
wireless would be tricky.
>> no long cables to radiate the
>> power supply noise of the router/switch, etc. Ethernet is galvanically
>> isolated, typically with at least 2000V or 5000V isolation)
>>
>> These days, very few people use phone modems, so you don't need to
>> interconnect the phone line and the ham station at all. That would mean
>> avoiding using that extra "phone line transient suppressor jack"
>>
> Unfortunately there is the networked fax machine/printer. It ties
> directly to the phone line AND the network.
But THAT particular device can go at WLAN speeds, so you can
inexpensively put an airgap between network and phone line. Probably
cheaper than a decent transient suppressor.
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