Re: [Repeater-Builder] Motorola Mystery Box
Many thanks Randy -and all other commenters-- My mystery is solvedamazing the knowledge that lurks within this group and all that it took on my part was to ask for a little of it. After I sent my milliseconds comment, I got to thinking in microsecondswhereas a total delay of about a second seemed impossible in the box size, a total delay of about a millisecond in 100 microsecond steps sounded within the realm of possibility---and that is what is is. I'll put the instruments on it to see the performance they achieved 40 years ago when I think it was built---(7109 date code on the box). Now, a quick follow on question. If the delay box is used to match the data arrival from two simulcasting transmitters, call them A B, to a point C, what happens to the match when point C moves? It seems to me that if point C is a moving target, that adequate match could easily be lost anyway. Guess I need to study up on simulcast system design. Thanks again-- Scott - Original Message - From: Randy Fisher To: Repeater-Builder@yahoogroups.com Sent: Monday, June 28, 2010 5:39 PM Subject: RE: [Repeater-Builder] Motorola Mystery Box This is a 600 Ohm Delay line used in setting audio delay's on Simulcast paging systems. The delay is in micro seconds. I have used several of these on an old Ameritech 158.100 paging system. This unit goes between the Link receiver or a leased audio telephone line, you set the delay by soldering to the correct post. I hope this helps, Randy WB9VLE From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Scott Overstreet Sent: Monday, June 28, 2010 2:57 PM To: Repeater-Builder@yahoogroups.com Cc: Scott Overstreet Subject: [Repeater-Builder] Motorola Mystery Box Hello All-- In answer to Ted, Eric and others---Yes, I guess it could be a taped delay line --but at telephone audio? I'm saying telephone because of the telco wire attachedWhat do you think the numbers might be?---milli-seconds? seems like that would take a lot of network but then there is a fair amount of space in the box but that would probably add up to a lot of attenuation. First, see the pictures--- as you can see, the box is metal and soldered and the connections are as it came to me. Since my first message, I have ask some questionsit seems that it came this way with a junked 65Mcs Micor that had been in paging ervice -that's all I know and I'm still mystified-what is it and what was it used for? Maybe its time to make some bench measurements. Many thanks, Scott
Re: [Repeater-Builder] Motorola Mystery Box
Maybe a telephone loop simulator... numbers would be distances? Just a thought. Look at the R/L/C between input and output pairs. Matthew Kaufman
RE: [Repeater-Builder] Motorola Mystery Box
This is a 600 Ohm Delay line used in setting audio delay's on Simulcast paging systems. The delay is in micro seconds. I have used several of these on an old Ameritech 158.100 paging system. This unit goes between the Link receiver or a leased audio telephone line, you set the delay by soldering to the correct post. I hope this helps, Randy WB9VLE From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Scott Overstreet Sent: Monday, June 28, 2010 2:57 PM To: Repeater-Builder@yahoogroups.com Cc: Scott Overstreet Subject: [Repeater-Builder] Motorola Mystery Box Hello All-- In answer to Ted, Eric and others---Yes, I guess it could be a taped delay line --but at telephone audio? I'm saying telephone because of the telco wire attachedWhat do you think the numbers might be?---milli-seconds? seems like that would take a lot of network but then there is a fair amount of space in the box but that would probably add up to a lot of attenuation. First, see the pictures--- as you can see, the box is metal and soldered and the connections are as it came to me. Since my first message, I have ask some questionsit seems that it came this way with a junked 65Mcs Micor that had been in paging service -that's all I know and I'm still mystified-what is it and what was it used for? Maybe its time to make some bench measurements. Many thanks, Scott
RE: [Repeater-Builder] Motorola Mystery Box
Could it be a tapped delay line? Can you look inside without destroying it? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Scott Overstreet Sent: Friday, June 25, 2010 2:45 PM To: Repeater-Builder@yahoogroups.com Cc: Scott Overstreet Subject: [Repeater-Builder] Motorola Mystery Box Hello All-- I have a black metal box (about 2x3x7) here labeled : Motorola 1D83000E 209933 7109 Part # 80D103 Machine screw hold down studs on one side and a string of solder terminals on the other side labeled IN, 100,200,300-to 900, 50, 100 and OUT and a couple of GND's. What is it?---I don't know where I got it and I am mystified Thanks much, Scott
Re: [Repeater-Builder] Motorola Mystery Box
Any pictures of it? John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: Scott Overstreet To: Repeater-Builder@yahoogroups.com Cc: Scott Overstreet Sent: Friday, June 25, 2010 2:44 PM Subject: [Repeater-Builder] Motorola Mystery Box Hello All-- I have a black metal box (about 2x3x7) here labeled : Motorola 1D83000E 209933 7109 Part # 80D103 Machine screw hold down studs on one side and a string of solder terminals on the other side labeled IN, 100,200,300-to 900, 50, 100 and OUT and a couple of GND's. What is it?---I don't know where I got it and I am mystified Thanks much, Scott
Re: [Repeater-Builder] Motorola Mystery Box
... mini boat anchor ? - Original Message - From: Scott Overstreet To: Repeater-Builder@yahoogroups.com Cc: Scott Overstreet Sent: Friday, June 25, 2010 4:44 PM Subject: [Repeater-Builder] Motorola Mystery Box Hello All-- I have a black metal box (about 2x3x7) here labeled : Motorola 1D83000E 209933 7109 Part # 80D103 Machine screw hold down studs on one side and a string of solder terminals on the other side labeled IN, 100,200,300-to 900, 50, 100 and OUT and a couple of GND's. What is it?---I don't know where I got it and I am mystified Thanks much, Scott
Re: [Repeater-Builder] Motorola Mystery Box
i think its a deal line. the number seems familiar Ted Bleiman K9MDM MDM Radio If its in stock...we've got it! P O Box 31353 - Chicago ,IL 60631-0353 Phone 773. 255. 9838 fax 773.775.8096 see our offerings on www.twowayshopper.com www.secondhandradio.com --- On Fri, 6/25/10, Mike Wehr weh...@comcast.net wrote: From: Mike Wehr weh...@comcast.net Subject: Re: [Repeater-Builder] Motorola Mystery Box To: Repeater-Builder@yahoogroups.com Date: Friday, June 25, 2010, 6:15 PM ... mini boat anchor ? - Original Message - From: Scott Overstreet To: Repeater-Builder@ yahoogroups. com Cc: Scott Overstreet Sent: Friday, June 25, 2010 4:44 PM Subject: [Repeater-Builder] Motorola Mystery Box Hello All-- I have a black metal box (about 2x3x7) here labeled : Motorola 1D83000E 209933 7109 Part # 80D103 Machine screw hold down studs on one side and a string of solder terminals on the other side labeled IN, 100,200,300- to 900, 50, 100 and OUT and a couple of GND's. What is it?---I don't know where I got it and I am mystified Thanks much, Scott
