Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
MCH wrote: Wrong. GMRS is Class A CB (FCC designation) while the 27 MHz band is Class D CB. I don't recall what classes B and C were offhand. One of them was a radio-control model service...planes, cars, etc.
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Class C was the remote control -- Original Message -- Received: Mon, 02 Feb 2009 01:35:55 PM PST From: wd8chl wd8...@gmail.com To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies MCH wrote: Wrong. GMRS is Class A CB (FCC designation) while the 27 MHz band is Class D CB. I don't recall what classes B and C were offhand. One of them was a radio-control model service...planes, cars, etc.
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Since we're talking about old radios, does anyone remember the West Coast Electronics Model MFM-15-150B? That's what got 2m FM going in San Diego in the early '60s. We bought a bunch of these from the Yellow Cab Co. when they upgraded to Motos. I'm working on a history of early FM in San Diego County and would like to find a picture of one of these units. Both inside and out. Thanks, Ken WA6OSB - Original Message - From: JOHN MACKEY To: Repeater-Builder@yahoogroups.com Sent: Saturday, January 17, 2009 13:28 PM Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies I had one of the Sonar FM radios that I bought for $20 already crystalled up on 29.6 MHz in about 1985. I ran if for a base station for a couple years, the squelch action was not the best. Eventually, I upgraded to a Mocom 70 base! -- Original Message -- Received: Sat, 17 Jan 2009 11:21:55 AM PST From: w7...@comcast.net To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies Hello Group, I have a couple of the Silver Grill E.F. Johnson Business Band tube type radios from the 60's. They are AM, and about 8 watts out. They are a Twin to the CB set Johnson produced around the same time. Also don't forget about Sonar brand. They produced a low band business transciever (AM) with matching power amplifier. I am happy there is still an interest in the preservation of these Boat Anchors When they are gone.they are gone forever! They do bring a smile to many folks, and that's what counts. I don't know what ever populated the part 15 49 mHz. band, after the cordless phones changed frequency. Seems like a waste, if no one is active. 73's de Tim Hardy W7TRH Vashon Is. Wa. -- Original message -- From: Joe k1ike_m...@snet.net Someone supposedly converted 2 of these radios into a repeater years ago. Hooked up the audio leads and swapped transmit crystals so they were on 2 different freqs. They did the same in the HT's that they talked to it with. Early budding hams, I guess. Joe w7...@comcast.net wrote: Hi Gang, Don't forget the Part 15 channels on 49 mHz. There were at least (3). Power limit was 100 mw. I still have a few Sears walkie-talkies of that type (late 70's) I think they are AM? Always thought about upping power(-: When Skip was in it was an interesting band. The channels were differnt that the old cordless that are on 49 mHz. Tim Hardy W7TRH Wa.
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Wrong. GMRS is Class A CB (FCC designation) while the 27 MHz band is Class D CB. I don't recall what classes B and C were offhand. FRS didn't exist until recently and has never carried an official CB label even though it too is under Part 95. MURS is even more recent. Both Class A and Class D CB used to require a license. The Class D license was dropped around 1980 or so. The Class A frequencies still require a license. MURS is also not a CB band - it is a business band. Although families can use those frequencies, so can literally anyone else - for any reason (yes, hams too, although only with FCC TA'ed equipment). It's truly one way hams can legally communicate with other services - such as your local Public Safety or EMA personnel. Joe M. Bracy Poppell wrote: Correction. UHF CB is FRS (Family Radio Server). GMRS (General Mobile Radio Service) requires a license and is not considered CB by the FCC. Also VHF CB is called MURS (Multiple Use Radio Service) and we all know the tradition HF CB as CB. Bracy --- In Repeater-Builder@yahoogroups.com, wd8chl wd8...@... wrote: Gordon 'Yeti' wrote: You think? In Die Hard, the terrorists brough 'CB radios' - which were obviously UHF (Does the US still have a UHF CB frequency?) FWIW-Yes-it's called GMRS. Yahoo! Groups Links
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Class B was something on UHF, and class C was 27 MHz remote control. -- Original Message -- Received: Sat, 17 Jan 2009 12:09:19 AM PST From: MCH m...@nb.net To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies Wrong. GMRS is Class A CB (FCC designation) while the 27 MHz band is Class D CB. I don't recall what classes B and C were offhand. FRS didn't exist until recently and has never carried an official CB label even though it too is under Part 95. MURS is even more recent. Both Class A and Class D CB used to require a license. The Class D license was dropped around 1980 or so. The Class A frequencies still require a license. MURS is also not a CB band - it is a business band. Although families can use those frequencies, so can literally anyone else - for any reason (yes, hams too, although only with FCC TA'ed equipment). It's truly one way hams can legally communicate with other services - such as your local Public Safety or EMA personnel. Joe M. Bracy Poppell wrote: Correction. UHF CB is FRS (Family Radio Server). GMRS (General Mobile Radio Service) requires a license and is not considered CB by the FCC. Also VHF CB is called MURS (Multiple Use Radio Service) and we all know the tradition HF CB as CB. Bracy --- In Repeater-Builder@yahoogroups.com, wd8chl wd8...@... wrote: Gordon 'Yeti' wrote: You think? In Die Hard, the terrorists brough 'CB radios' - which were obviously UHF (Does the US still have a UHF CB frequency?) FWIW-Yes-it's called GMRS. Yahoo! Groups Links
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Class B was the old day equivalent of FRS, Class C is the Class D 'alpha' channels. With regard to Die Hard 2 - No wonder the military didn't have much luck decoding the scrambled signals - the handies are 440Mhz FM, and the base rig they have is tuned to the MGM segment of 2 metres! JOHN MACKEY wrote: Class B was something on UHF, and class C was 27 MHz remote control. -- Original Message -- Received: Sat, 17 Jan 2009 12:09:19 AM PST From: MCH m...@nb.net mailto:mch%40nb.net To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies Wrong. GMRS is Class A CB (FCC designation) while the 27 MHz band is Class D CB. I don't recall what classes B and C were offhand. FRS didn't exist until recently and has never carried an official CB label even though it too is under Part 95. MURS is even more recent. Both Class A and Class D CB used to require a license. The Class D license was dropped around 1980 or so. The Class A frequencies still require a license. MURS is also not a CB band - it is a business band. Although families can use those frequencies, so can literally anyone else - for any reason (yes, hams too, although only with FCC TA'ed equipment). It's truly one way hams can legally communicate with other services - such as your local Public Safety or EMA personnel. Joe M. Bracy Poppell wrote: Correction. UHF CB is FRS (Family Radio Server). GMRS (General Mobile Radio Service) requires a license and is not considered CB by the FCC. Also VHF CB is called MURS (Multiple Use Radio Service) and we all know the tradition HF CB as CB. Bracy --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com, wd8chl wd8...@... wrote: Gordon 'Yeti' wrote: You think? In Die Hard, the terrorists brough 'CB radios' - which were obviously UHF (Does the US still have a UHF CB frequency?) FWIW-Yes-it's called GMRS. Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.10.8/1898 - Release Date: 16/01/2009 15:09
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Hi Gang, Don't forget the Part 15 channels on 49 mHz. There were at least (3). Power limit was 100 mw. I still have a few Sears walkie-talkies of that type (late 70's) I think they are AM? Always thought about upping power(-: When Skip was in it was an interesting band. The channels were differnt that the old cordless that are on 49 mHz. Tim Hardy W7TRH Wa. -- Original message -- From: JOHN MACKEY jmac...@usa.net Class B was something on UHF, and class C was 27 MHz remote control. -- Original Message -- Received: Sat, 17 Jan 2009 12:09:19 AM PST From: MCH m...@nb.net To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies Wrong. GMRS is Class A CB (FCC designation) while the 27 MHz band is Class D CB. I don't recall what classes B and C were offhand. FRS didn't exist until recently and has never carried an official CB label even though it too is under Part 95. MURS is even more recent. Both Class A and Class D CB used to require a license. The Class D license was dropped around 1980 or so. The Class A frequencies still require a license. MURS is also not a CB band - it is a business band. Although families can use those frequencies, so can literally anyone else - for any reason (yes, hams too, although only with FCC TA'ed equipment). It's truly one way hams can legally communicate with other services - such as your local Public Safety or EMA personnel. Joe M. Bracy Poppell wrote: Correction. UHF CB is FRS (Family Radio Server). GMRS (General Mobile Radio Service) requires a license and is not considered CB by the FCC. Also VHF CB is called MURS (Multiple Use Radio Service) and we all know the tradition HF CB as CB. Bracy --- In Repeater-Builder@yahoogroups.com, wd8chl wd8...@... wrote: Gordon 'Yeti' wrote: You think? In Die Hard, the terrorists brough 'CB radios' - which were obviously UHF (Does the US still have a UHF CB frequency?) FWIW-Yes-it's called GMRS. Yahoo! Groups Links
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Someone supposedly converted 2 of these radios into a repeater years ago. Hooked up the audio leads and swapped transmit crystals so they were on 2 different freqs. They did the same in the HT's that they talked to it with. Early budding hams, I guess. Joe w7...@comcast.net wrote: Hi Gang, Don't forget the Part 15 channels on 49 mHz. There were at least (3). Power limit was 100 mw. I still have a few Sears walkie-talkies of that type (late 70's) I think they are AM? Always thought about upping power(-: When Skip was in it was an interesting band. The channels were differnt that the old cordless that are on 49 mHz. Tim Hardy W7TRH Wa.
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Hello Group, I have a couple of the Silver Grill E.F. Johnson Business Band tube type radios from the 60's. They are AM, and about 8 watts out. They are a Twin to the CB set Johnson produced around the same time. Also don't forget about Sonar brand. They produced a low band business transciever (AM) with matching power amplifier. I am happy there is still an interest in the preservation of these Boat Anchors When they are gone.they are gone forever! They do bring a smile to many folks, and that's what counts. I don't know what ever populated the part 15 49 mHz. band, after the cordless phones changed frequency. Seems like a waste, if no one is active. 73's de Tim Hardy W7TRH Vashon Is. Wa. -- Original message -- From: Joe k1ike_m...@snet.net Someone supposedly converted 2 of these radios into a repeater years ago. Hooked up the audio leads and swapped transmit crystals so they were on 2 different freqs. They did the same in the HT's that they talked to it with. Early budding hams, I guess. Joe w7...@comcast.net wrote: Hi Gang, Don't forget the Part 15 channels on 49 mHz. There were at least (3). Power limit was 100 mw. I still have a few Sears walkie-talkies of that type (late 70's) I think they are AM? Always thought about upping power(-: When Skip was in it was an interesting band. The channels were differnt that the old cordless that are on 49 mHz. Tim Hardy W7TRH Wa.
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
I had one of the Sonar FM radios that I bought for $20 already crystalled up on 29.6 MHz in about 1985. I ran if for a base station for a couple years, the squelch action was not the best. Eventually, I upgraded to a Mocom 70 base! -- Original Message -- Received: Sat, 17 Jan 2009 11:21:55 AM PST From: w7...@comcast.net To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies Hello Group, I have a couple of the Silver Grill E.F. Johnson Business Band tube type radios from the 60's. They are AM, and about 8 watts out. They are a Twin to the CB set Johnson produced around the same time. Also don't forget about Sonar brand. They produced a low band business transciever (AM) with matching power amplifier. I am happy there is still an interest in the preservation of these Boat Anchors When they are gone.they are gone forever! They do bring a smile to many folks, and that's what counts. I don't know what ever populated the part 15 49 mHz. band, after the cordless phones changed frequency. Seems like a waste, if no one is active. 73's de Tim Hardy W7TRH Vashon Is. Wa. -- Original message -- From: Joe k1ike_m...@snet.net Someone supposedly converted 2 of these radios into a repeater years ago. Hooked up the audio leads and swapped transmit crystals so they were on 2 different freqs. They did the same in the HT's that they talked to it with. Early budding hams, I guess. Joe w7...@comcast.net wrote: Hi Gang, Don't forget the Part 15 channels on 49 mHz. There were at least (3). Power limit was 100 mw. I still have a few Sears walkie-talkies of that type (late 70's) I think they are AM? Always thought about upping power(-: When Skip was in it was an interesting band. The channels were differnt that the old cordless that are on 49 mHz. Tim Hardy W7TRH Wa.
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
I have several of the Sonar VHF high band mobiles tucked away somewhere... 4 channel, push-button selected, used standard Radio Shack scanner crystals for RX. Crappy speakers George, KA3HSW / WQGJ413 - Original Message - From: w7...@comcast.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, January 17, 2009 1:21 PM Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies Hello Group, I have a couple of the Silver Grill E.F. Johnson Business Band tube type radios from the 60's. They are AM, and about 8 watts out. They are a Twin to the CB set Johnson produced around the same time. Also don't forget about Sonar brand. They produced a low band business transciever (AM) with matching power amplifier. I am happy there is still an interest in the preservation of these Boat Anchors When they are gone.they are gone forever! They do bring a smile to many folks, and that's what counts. I don't know what ever populated the part 15 49 mHz. band, after the cordless phones changed frequency. Seems like a waste, if no one is active. 73's de Tim Hardy W7TRH Vashon Is. Wa.
[Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Correction. UHF CB is FRS (Family Radio Server). GMRS (General Mobile Radio Service) requires a license and is not considered CB by the FCC. Also VHF CB is called MURS (Multiple Use Radio Service) and we all know the tradition HF CB as CB. Bracy --- In Repeater-Builder@yahoogroups.com, wd8chl wd8...@... wrote: Gordon 'Yeti' wrote: You think? In Die Hard, the terrorists brough 'CB radios' - which were obviously UHF (Does the US still have a UHF CB frequency?) FWIW-Yes-it's called GMRS.
[Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Hi John How's it going? I remember the Biocom. We tried one out in Palm Beach County way back when. I recall it used GE PE series radios in it. We took it apart to see. It's about 45 degrees up here now in Seatttle. We got almost record snow this year - about 18 inches where I am. 20 miles east they have over 6 feet in the mountains. I could use some sun for a while! Doug Dickinson KC0SDQ
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Doug Dickinson wrote: The Orange Box and the Apcor (both Motorola) Hi Doug, You forgot about the other Orange Box made by Biocom (if I remember correctly). It had GE portables as it's guts Don't you wish you were back in Florida now, 80F and bright sun. Happy holidays to you and all the R-B members John -- John Mc Hugh, K4AG Coordinator for Amateur Radio National Hurricane Center, WX4NHC Home page:- http://www.wx4nhc.org
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Check this site it may have some useful info. SD http://harrymarnell.net/ --- On Tue, 12/23/08, Albert hitekgearh...@hotmail.com wrote: From: Albert hitekgearh...@hotmail.com Subject: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies To: Repeater-Builder@yahoogroups.com Date: Tuesday, December 23, 2008, 10:08 PM Wow Guys! This was exactly the kind of information I was looking for. I always think it is neat to hear a little history from people who have been there and done that. I will have to go back and reread all of the posts to soak all of it up. Thanks again --- In Repeater-Builder@ yahoogroups. com, Albert hitekgearhead@ ... wrote: I was wondering if anyone had links to any websites that talk about radios used in TV and Movies. What got me thinking about this was that I had been watching the old TV show Emergency on Netflix. (remember squad 51, rampart hospital, etc.) I know some of the stuff is just props but I thought some of it might be real equipment that I don't recognize. For instance one of the characters (Roy) often carries an HT into the hospital when they drop off a patient. I think it is an HT220 since it has a telescoping antenna, but might be a MT500. Thanks
[Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Actually, they did. By changing the PL tone that was sent from the 'med' radio, you changed what frequency the mobile transmitted on. WalterH --- In Repeater-Builder@yahoogroups.com, n...@... wrote: At 12/22/2008 10:21, you wrote: SNIP There was an Emergency episode where Gage DeSoto didn't like the instructions given by the orderly at Rampart over the med. radio (I believe they were told to use the defibrillator on someone they felt didn't need it), so they switched channels on that radio proceeded to get their instructions from St. Francis Hospital instead of Rampart. If that radio relayed through the squad radio I doubt they would have really had that capability. Bob NO6B
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
- Original Message - From: Doug Dickinson To: Repeater-Builder@yahoogroups.com Sent: Sunday, December 21, 2008 11:48 PM Subject: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies The next version was the APCOR series, but that is another story. Then there was the associated Micor that went in the ambulance...
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
At 12/22/2008 10:21, you wrote: urn:schemas-microsoft-com:vml xmlns:o = urn:schemas-microsoft-com:office:office xmlns:w = urn:schemas-microsoft-com:office:word xmlns:m = http://schemas.microsoft.com/office/2004/12/omml; Of course on TV, they did nothing but The original units would have repeated through the squad mobile radio. The portable telemetry units had a different MED frequency for this purpose. At least that's how they worked when NYS originally set them up. At least that's how I remember it. That was back in the 70's. There was an Emergency episode where Gage DeSoto didn't like the instructions given by the orderly at Rampart over the med. radio (I believe they were told to use the defibrillator on someone they felt didn't need it), so they switched channels on that radio proceeded to get their instructions from St. Francis Hospital instead of Rampart. If that radio relayed through the squad radio I doubt they would have really had that capability. Bob NO6B
[Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
There were two basic repeat modes used in the Medical Telemetry systems. The Med 1 through 8 and the two dispatch channels (now known as Med 9 and 10) are duplex channels. The Orange Box and the Apcor (both Motorola) and some others were duplex hand carried units. I will focus first on the Orange Box and The Apcor. Both units were duplex and transmitted to the base on the traditional mobile higher frequency. The orange Box had a repeat function that would retransmit the base TX freq through the mobile freq. The base station ran in duplex mode, not repeated. This way, a portable radio (like a COR HT220 model) would transmoit through the Orange Box to the base and the base would transmit through the Orange Box to the portable. The portable was also configured like a base station channel-wise. It worked! The 12W APCOR worked the same way. The EMD mobile repeater was a duplex Micor 10 channel radio with a separate Pac_rt radio receiver. The mobile would transmit on the mobile freq and would receive on both the Base channel and a 458MHz channel (there are 4 of them) simultaniously and repeate the audio back out through the mobile freq. The base would operate in non-repeated mode. The would allow a full-duplex conversation, although it isn't technically full duplex - it just works that way. The porable unit talking to the Mobile was a 1 watt APCOR radio that talked on the 458 channel and listened on the 468 channel, thereby giving the entire conversation duplex functionality. So - that's how all this worked. The Mobile and APCOR portable combined cost almost $5K in the mid-late 70s. That was more than a car cost! Motorola has lots of bells and whistles on it. The mobile was SP all the way and the APCOR was a costly device. Doug in Seattle now, Florida then
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
- Original Message - From: Doug Dickinson To: Repeater-Builder@yahoogroups.com Sent: Tuesday, December 23, 2008 9:38 AM Subject: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies The EMD mobile repeater was a duplex Micor 10 channel radio with a separate Pac_rt radio receiver. The mobile would transmit on the mobile freq and would receive on both the Base channel and a 458MHz channel (there are 4 of them) simultaniously and repeate the audio back out through the mobile freq. I recall the 'extra receiver' as being in a shortened Micor Chassis, standard Micor plug Gary
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
If anyone wants to own their own genuine Apcor I have about six available.without batteries. $50.00 plus shipping too much? tom - Original Message - From: Gary Glaenzer To: Repeater-Builder@yahoogroups.com Sent: 12/23/2008 11:06:08 AM Subject: Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies - Original Message - From: Doug Dickinson To: Repeater-Builder@yahoogroups.com Sent: Tuesday, December 23, 2008 9:38 AM Subject: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies The EMD mobile repeater was a duplex Micor 10 channel radio with a separate Pac_rt radio receiver. The mobile would transmit on the mobile freq and would receive on both the Base channel and a 458MHz channel (there are 4 of them) simultaniously and repeate the audio back out through the mobile freq. I recall the 'extra receiver' as being in a shortened Micor Chassis, standard Micor plug Gary
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
I was a Pierce County Wa. State Paramedic in the middle 1970's, and remember the MEDCOM radios well. Actually sent an EKG very well to the ER Doc! (Not too much artifact) Happy Holidays and 73's Tim Hardy W7TRH/AFA5TP Vashon Is. Wa. -- Original message -- From: Doug Dickinson dougd...@yahoo.com There were two basic repeat modes used in the Medical Telemetry systems. The Med 1 through 8 and the two dispatch channels (now known as Med 9 and 10) are duplex channels. The Orange Box and the Apcor (both Motorola) and some others were duplex hand carried units. I will focus first on the Orange Box and The Apcor. Both units were duplex and transmitted to the base on the traditional mobile higher frequency. The orange Box had a repeat function that would retransmit the base TX freq through the mobile freq. The base station ran in duplex mode, not repeated. This way, a portable radio (like a COR HT220 model) would transmoit through the Orange Box to the base and the base would transmit through the Orange Box to the portable. The portable was also configured like a base station channel-wise. It worked! The 12W APCOR worked the same way. The EMD mobile repeater was a duplex Micor 10 channel radio with a separate Pac_rt radio receiver. The mobile would transmit on the mobile freq and would receive on both the Base channel and a 458MHz channel (there are 4 of them) simultaniously and repeate the audio back out through the mobile freq. The base would operate in non-repeated mode. The would allow a full-duplex conversation, although it isn't technically full duplex - it just works that way. The porable unit talking to the Mobile was a 1 watt APCOR radio that talked on the 458 channel and listened on the 468 channel, thereby giving the entire conversation duplex functionality. So - that's how all this worked. The Mobile and APCOR portable combined cost almost $5K in the mid-late 70s. That was more than a car cost! Motorola has lots of bells and whistles on it. The mobile was SP all the way and the APCOR was a costly device. Doug in Seattle now, Florida then
[Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Wow Guys! This was exactly the kind of information I was looking for. I always think it is neat to hear a little history from people who have been there and done that. I will have to go back and reread all of the posts to soak all of it up. Thanks again --- In Repeater-Builder@yahoogroups.com, Albert hitekgearh...@... wrote: I was wondering if anyone had links to any websites that talk about radios used in TV and Movies. What got me thinking about this was that I had been watching the old TV show Emergency on Netflix. (remember squad 51, rampart hospital, etc.) I know some of the stuff is just props but I thought some of it might be real equipment that I don't recognize. For instance one of the characters (Roy) often carries an HT into the hospital when they drop off a patient. I think it is an HT220 since it has a telescoping antenna, but might be a MT500. Thanks
[Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
I do remember a little about the radios they used on the series. The Orange Box duplex paramedic radio was the original Motorola adventure into the medical telemetry function. It consisted of (all inside the orange box case) an HT220 used as an exciter, and a PA out of a micor mobile low power unit and a duplexer from a mobile phone (I think from a Mocom 70 series radio). The receiver was straight out of the micor also. It had a limited production VCO that is fed from a differential amplifier that amplifies the typical 50mv signal retreived from the skin surface from heart activity and the amplified voltage feeds the variable VCO which modulates the EKG signal acrosss the air. It also has what we called micky mouse mux so that the audio from the ekg and from the voice were transmitted simultaniously and separated at the ekg console at the hospital to give both ekg and duplex voice simultaniously. It was an interesting radio and it worked fairly well. The next version was the APCOR series, but that is another story. The portables they used started out as HT200 radios with the telescoping antenna which were accurate at one time for LA County FD. I also saw an HT220 on a later show. I never saw an MT500 that I recall. It was mostly older equipment they used. The Defib was a PhysioControl Lifepack 3 if I remember correctly. They were big and heavy, but they did get the job done. I don't remember the mobile radio. I would have to watch an episode to know the mobile radio. It was probably a Mocom 70, but I won't bet on it. So - that's what I remember. Doug Seattle now Florida back then EMT for 29 years
[Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
I do remember a little about the radios they used on the series. The Orange Box duplex radio was the original Motorola adventure into the medical telemetry function. It consisted of an HT220 used as an exciter, and a PA out of a micor mobile low power unit. The receiver was straight out of the micor also. It has a limited production VCO that is fed from a differential amplifier that amplifies the typical 50mv signal retreived from the skin surface from heart activity and the amplified voltage feeds the variable VCO which modulates the EKG signal acrosss the air. It also has what we called micky mouse mux so that the audio from the ekg AND FROM VOICE (LESS THE 400 TO 500 hZ)
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Die Hard 2 featured a lot of Kenwood ham equipment, including a TS940S and UHF hand-helds. Nathan N5REL Sent via BlackBerry by ATT -Original Message- From: Doug Dickinson dougd...@yahoo.com Date: Mon, 22 Dec 2008 05:48:59 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies I do remember a little about the radios they used on the series. The Orange Box duplex paramedic radio was the original Motorola adventure into the medical telemetry function. It consisted of (all inside the orange box case) an HT220 used as an exciter, and a PA out of a micor mobile low power unit and a duplexer from a mobile phone (I think from a Mocom 70 series radio). The receiver was straight out of the micor also. It had a limited production VCO that is fed from a differential amplifier that amplifies the typical 50mv signal retreived from the skin surface from heart activity and the amplified voltage feeds the variable VCO which modulates the EKG signal acrosss the air. It also has what we called micky mouse mux so that the audio from the ekg and from the voice were transmitted simultaniously and separated at the ekg console at the hospital to give both ekg and duplex voice simultaniously. It was an interesting radio and it worked fairly well. The next version was the APCOR series, but that is another story. The portables they used started out as HT200 radios with the telescoping antenna which were accurate at one time for LA County FD. I also saw an HT220 on a later show. I never saw an MT500 that I recall. It was mostly older equipment they used. The Defib was a PhysioControl Lifepack 3 if I remember correctly. They were big and heavy, but they did get the job done. I don't remember the mobile radio. I would have to watch an episode to know the mobile radio. It was probably a Mocom 70, but I won't bet on it. So - that's what I remember. Doug Seattle now Florida back then EMT for 29 years Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:repeater-builder-dig...@yahoogroups.com mailto:repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
FW: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Doug, Did these radios relay thru the squad, towers, or were they direct to the ER? Always wondered. 73 JIM KA2AJH Wellsville, NY From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Doug Dickinson Sent: Monday, December 22, 2008 12:49 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies I do remember a little about the radios they used on the series. The Orange Box duplex paramedic radio was the original Motorola adventure into the medical telemetry function. SNIP.. Doug Seattle now Florida back then EMT for 29 years
Re: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Of course on TV, they did nothing but The original units would have repeated through the squad mobile radio. The portable telemetry units had a different MED frequency for this purpose. At least that's how they worked when NYS originally set them up. At least that's how I remember it. That was back in the 70's. Chuck - Original Message - From: Jim Cicirello To: Repeater-Builder@yahoogroups.com Sent: Monday, December 22, 2008 12:59 PM Subject: FW: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies Doug, Did these radios relay thru the squad, towers, or were they direct to the ER? Always wondered. 73 JIM KA2AJH Wellsville, NY
Re: FW: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies
Jim Cicirello wrote: Doug, Did these radios relay thru the squad, towers, or were they direct to the ER? Always wondered. Reminds me of a story an old Mot tech told me one time. They had just finished putting the 911 system in in Boyd County Kentucky. The hospital had the portable telemetry stuff, and was rolling it out for all to see. They hooked up the hospital CEO to the EKG, and flipped the switch. It all fired up and the scope on the receiver equipment started to work. All of a sudden, the scope flat lined! It scared the CEO nearly to death, and all of the Motorola execs present held their breath. My buddy spoke up and said, Wait, I know what it is!, and ran out the door. The telemetry unit transmitted to the ambulance, and was cross band repeated through a vehicular repeater to a UHF repeater back to the hospital. My buddy jumped in the ambulance, yanked the time out timer, and the whole system came back to life! Now, over the years, this story may have very well grown in intensity , and/or truth, but that is the way the story was relayed to me years ago.. To answer your question, It depends on the backbone system the EKG was a part of, but from my knowledge, it was repeated through the ambulance.. 73 Mike KA4MKG
