On 6/19/2010 10:11 AM, jimlux wrote:
> 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.
>
>
Weekly backups can run several Terabytes. Daily's are usually much
smaller. I do a lot of photography and AV work.
The slow part is the archiving to the external HDs even if they are
eSATA, but they sure beat USB<:-))
>
>
>>> 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.
>
>
I've thought about taking that track, but I still have the cable modem
hardwired in. Whether it's less prone to lightning damage than the phone
line?
73
Roger (K8RI)
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