11 Nov
2014
11 Nov
'14
11:21 p.m.
I've got a bunch (maybe half a dozen) 600 ohm - to -600 ohm telco line
transformers. Nice units, maybe 5 inches tall by 2.5 inches wide, and
potted. Use 4 8/32 screws for mounting.
Is there any use for this stuff? Does anyone want them?
--Chuck
11 Nov
11 Nov
11:30 p.m.
Perhaps useful to amateur radio operators like myself...
________________________________
From: Chuck Guzis <cclist at sydex.com>
To: General at classiccmp.org
Sent: Tuesday, November 11, 2014 3:21 PM
Subject: Full-size 600 ohm telo transformers
I've got a bunch (maybe half a dozen) 600 ohm - to -600 ohm telco line
transformers. Nice units, maybe 5 inches tall by 2.5 inches wide, and
potted. Use 4 8/32 screws for mounting.
Is there any use for this stuff? Does anyone want them?
--Chuck
12 Nov
12 Nov
12:23 a.m.
Chuck Guzis wrote:
I've got a bunch (maybe half a dozen) 600 ohm - to
-600 ohm telco line
transformers. Nice units, maybe 5 inches tall by 2.5 inches wide, and
potted. Use 4 8/32 screws for mounting.
Is there any use for this stuff? Does anyone want them?
JC White wrote:
Perhaps useful to amateur radio operators like
myself...
Speaking of which, a friend has a bunch of Tellabs 4201 2-wire to
4-wire hybrids ("Terminating Sets") that he'd like to sell. Maybe
useful to hams? They are switchable for 600 or 900 ohms on the 2-wire
side, and fixed at 600 ohms on the 4-wire side. each module has two
potted transformers, four test jacks, and an edge connector to plug
into a backplane.
Photos: https://www.flickr.com/photos/22368471 at N04/sets/72157649241740522/
A scan of the tech manual is at:
http://www.telephonecollectors.info/index.php/browse/doc_details/3702-tella…
11:55 p.m.
I've got one here in my hands. Aluminum housing (potted construction),
solder terminals on the bottom, labeled 1,2,3,4 2.5"H x 2"D x 2.5" W
Only ID is the number 080-00785-03 on the side. Fairly hefty: 1.25 lbs,
DC resistance (both sides) 1.2 ohm.
Let me know, I'm doing some housecleaning. I haven't looked carefully;
I may have only 4 left. After sleeping on this, I recall that there
were a bunch of plug-in passive LC filter modules, then "stapled wiring"
PCB modules with mercury-wetted relays and a bunch of moto TO3 diodes
and transistors.
--Chuck
13 Nov
13 Nov
12:35 a.m.
Chuck please contact me off list about the transformers, etc
John
jcw1231 at pacbell.net
________________________________
From: Chuck Guzis <cclist at sydex.com>
To: General at classiccmp.org
Sent: Wednesday, November 12, 2014 3:55 PM
Subject: Re: Full-size 600 ohm telo transformers
I've got one here in my hands. Aluminum housing (potted construction),
solder terminals on the bottom, labeled 1,2,3,4 2.5"H x 2"D x 2.5" W
Only ID is the number 080-00785-03 on the side. Fairly hefty: 1.25 lbs,
DC resistance (both sides) 1.2 ohm.
Let me know, I'm doing some housecleaning. I haven't looked carefully;
I may have only 4 left. After sleeping on this, I recall that there
were a bunch of plug-in passive LC filter modules, then "stapled wiring"
PCB modules with mercury-wetted relays and a bunch of moto TO3 diodes
and transistors.
--Chuck
12:50 a.m.
On 11/12/2014 04:35 PM, JC White wrote:
Chuck please contact me off list about the
transformers, etc
John
jcw1231 at pacbell.net
Sure John, what can I help you with?
--Chuck
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days inactive
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