RE: [AMRadio] FM transmitter
Yes, its got metal walls between the coils linking the RF amp and mixer stages, how it gets any RF through is hard to figure. I think its also got metal walls between the antenna input and the rf amp, yet seems quite sensitive on the lower bands. Good audio, with a nice modern full range speaker in the front, the cabinet makes a good speaker cabinet. Brett -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Donald Chester Sent: Saturday, March 04, 2006 3:14 AM To: amradio@mailman.qth.net Subject: Re: [AMRadio] FM transmitter They did monitor for the local oscillators. I saw them on more than one occasion patrolling with their highly directional antenna. It was a rotatable dipole with lots of loading inductance along the element. It was conical shaped tapering to a narrow outer end, and was about 4-6 feet in length. It looked quite impressinve painted in G.P.O. green livery the same color as the vehicle - a Morris MInor 1000 van! Same kind of vehicle as a VW bug only British - smaller and lower to the ground. I suppose a Scott SLRM would be difficult to detect. Not quite a communications receiver, it is basically a high quality multiband broadcast radio with special shielding to keep the local oscillators from radiating. They were used on the Liberty Ships in WW2 to provide entertainment for the crew, while protecting the ship from detection by the enemy homing in on the local oscillators. My father-in-law rescued one from going to the dump and lugged it all the way from Arizona and dropped it off here. An interesting piece of gear. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
So sometimes others find our contacts interesting. True - when I was a teenager in Ohio I ran a lot of 6m AM. I didn't know it but my 2E26-based 3 watt signal was getting into the local cable-TV system and being amplified and carried all around the neighborhood - or perhaps even all over that part of town. I learned about it when an elderly neighbor stopped me walking home from school and said that she'd heard me on her TV and found my discussion of the new designs for space shuttles interesting. She also said that she'd talked to other people she knew and they were hearing me too. They all knew who I was but none of them ever complained. That also points out how old the space shuttle design has become... I did have another neighbor complain very harshly about my 6m AM operations one time... He was hearing me on his stereo when he played records on the turntable. I tried to explain how it might be happening and how we could fix it - but he just said if it happened again he would kill me. Yeah right... real nice to threaten a 13 year old. A few weeks later I was looking out my bedroom window and noticed this bozo working on a new stereo for his rockin' van. He was listening to an FM station on 100.7 MHz as he hooked up the speakers in the rear doors.. I got the bright idea to key up my six meter rig on 50.4 and the sure enough the second harmonic blanked out his reception beautifully. Each time he went back to work on one of the speakers I keyed up and his outfit went silent. Then when he jumped up and ran to the front to fiddle with the radio I unkeyed and his FM reception returned. I made him dance back and forth for a considerable time... I still cherish the memory. Steve WD8DAS
Re: [AMRadio] FM transmitter
Steve, Mack in the early 1970's I did something similar to your six meter signal blanking the guys FM radio. I was a novice, wn8pep, and was experimenting with old computer circuit boards (RTL logic). The transistors were silicon 2N706, and would often oscillate when testing in my transistor tester using the long leaded aligator clip option for in circuit testing. If I wiggled or twisted the leads, the FM radio, or TV would be disturbed. The oscillator discovery lead me into a series of oscillators placed inside of tin cans with a variable knob. Eventually I AM modulated the things (AM = ALL modulation!). Once I blanked my mothers FM stereo, and then I modulated my own program material. I was blanking elevator music and replacing it with hard rock rebroadcast from an am radio. My mom went through fits about this! A few years later when WB8PEP, and in a college dorm, I evolved this transmitter into a MOPA design with the oscillator collector modulated. Since the PA was class C, the final emission was mostly FM with a little AM. For about 3 months in the winter-spring of 1975, Puterbaugh hall had a Saturday night broadcast that was campus wide. This was WRFP, radio free Puterbaugh. With a groundplane coat hanger antenna on top of a 3 story building, and maybe 50mw of power, we achieved full campus coverage with good quieting, and decent quality. We had pre-recorded announcements, and used the dorm main desk for requests. It was a lot of fun! Regards, Jim Candela WD5JKO --- [EMAIL PROTECTED] wrote: So sometimes others find our contacts interesting. True - when I was a teenager in Ohio I ran a lot of 6m AM. I didn't know it but my 2E26-based 3 watt signal was getting into the local cable-TV system and being amplified and carried all around the neighborhood - or perhaps even all over that part of town. I learned about it when an elderly neighbor stopped me walking home from school and said that she'd heard me on her TV and found my discussion of the new designs for space shuttles interesting. She also said that she'd talked to other people she knew and they were hearing me too. They all knew who I was but none of them ever complained. That also points out how old the space shuttle design has become... I did have another neighbor complain very harshly about my 6m AM operations one time... He was hearing me on his stereo when he played records on the turntable. I tried to explain how it might be happening and how we could fix it - but he just said if it happened again he would kill me. Yeah right... real nice to threaten a 13 year old. A few weeks later I was looking out my bedroom window and noticed this bozo working on a new stereo for his rockin' van. He was listening to an FM station on 100.7 MHz as he hooked up the speakers in the rear doors.. I got the bright idea to key up my six meter rig on 50.4 and the sure enough the second harmonic blanked out his reception beautifully. Each time he went back to work on one of the speakers I keyed up and his outfit went silent. Then when he jumped up and ran to the front to fiddle with the radio I unkeyed and his FM reception returned. I made him dance back and forth for a considerable time... I still cherish the memory. Steve WD8DAS __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
They did monitor for the local oscillators. I saw them on more than one occasion patrolling with their highly directional antenna. It was a rotatable dipole with lots of loading inductance along the element. It was conical shaped tapering to a narrow outer end, and was about 4-6 feet in length. It looked quite impressinve painted in G.P.O. green livery the same color as the vehicle - a Morris MInor 1000 van! Same kind of vehicle as a VW bug only British - smaller and lower to the ground. I suppose a Scott SLRM would be difficult to detect. Not quite a communications receiver, it is basically a high quality multiband broadcast radio with special shielding to keep the local oscillators from radiating. They were used on the Liberty Ships in WW2 to provide entertainment for the crew, while protecting the ship from detection by the enemy homing in on the local oscillators. My father-in-law rescued one from going to the dump and lugged it all the way from Arizona and dropped it off here. An interesting piece of gear. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/
Re: [AMRadio] FM transmitter
Back in the 50's I had a neighbor who called me and knew my ham call. She heard another ham on her TV giving my call and talking to me but could not hear me. She wanted to know how she could hear both sides of the qso. The other ham was on 10 meters mobile about 8 to 10 miles away when she heard him. Later checking found his strong signal being transmitted on 21 Mhz as well as 28 mhz. We surmised she heard the signal thru the 21 mhz if on the tv. We verified the rec eption several times before we retuned his transmitter to reduce the 21 mhz signal. So sometimes others find our contacts interesting. BTW, she joined our code classes and got her novice , then the technician license, then general over a 2 year period. She became very active in the YLRL. Healthfully yours, DON W4BWS - Original Message - From: Brett gazdzinski [EMAIL PROTECTED] To: 'Discussion of AM Radio' amradio@mailman.qth.net Sent: Friday, March 03, 2006 5:54 PM Subject: RE: [AMRadio] FM transmitter They might appreciate hearing the other side of the QSO though... Brett -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Miller WB5OXQ Sent: Friday, March 03, 2006 2:28 PM To: [EMAIL PROTECTED]; Discussion of AM Radio Subject: Re: [AMRadio] FM transmitter Just trying to keep you out of trouble! ; ) I am sure my neighbors don't need a fm radio to hear my station especially when I am on AM! - Original Message - From: Brian Carling [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 7:23 AM Subject: Re: [AMRadio] FM transmitter But if you use wireless speakers you don't get to introduce your neighbors who roam the FM dial to the joys of amateur radio! On 2 Mar 2006 at 21:28, Jim Miller WB5OXQ wrote: Get some wireless speakers. They come with a small 900mhz transmitter and usually work up to 150' though they claim 300. Around $60 a pair at radio shack __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
But if you use wireless speakers you don't get to introduce your neighbors who roam the FM dial to the joys of amateur radio! On 2 Mar 2006 at 21:28, Jim Miller WB5OXQ wrote: Get some wireless speakers. They come with a small 900mhz transmitter and usually work up to 150' though they claim 300. Around $60 a pair at radio shack
RE: [AMRadio] FM transmitter
Yipes - for $399.00 it better be DARN good, LOL! On 2 Mar 2006 at 21:53, Bob Peters wrote: The best FM xmtr I have used is from Broadcast Vision in Ca. They are used in health clubs all over the USA. A little costly but work well. Are in Sterol and digital. The Crane does not work well. The Ramsey is very expensive.. Bob W1PE -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Miller WB5OXQ Sent: Thursday, March 02, 2006 9:28 PM To: Discussion of AM Radio Subject: Re: [AMRadio] FM transmitter Get some wireless speakers. They come with a small 900mhz transmitter and usually work up to 150' though they claim 300. Around $60 a pair at radio shack - Original Message - From: Donald Chester [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Thursday, March 02, 2006 4:40 PM Subject: [AMRadio] FM transmitter Hope they don't measure the FM broadcast transmitter I have, so I can listen while doing stuff around the house and yard with a walkman, its over a watt I think... What kind of FM transmitter do you use? I have been looking for something so I can use to feed streaming audio from my desktop computer to all the FM radios on my property, so I don't have to sit in front of the computer to listen. I ordered one of the little FM stereo xmtrs from C Crane. It had good synthesised frequency stability, but the audio was distorted and it had a range of about 35 feet. I need good solid coverage within a radius of at least 100 feet. I had intended to experiment with an external antenna with the thing, but it crapped out before I could do that. They refunded my money. I think Ramsey sells kits, but I have heard they are pieces of crap. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
Just trying to keep you out of trouble! ; ) I am sure my neighbors don't need a fm radio to hear my station especially when I am on AM! - Original Message - From: Brian Carling [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 7:23 AM Subject: Re: [AMRadio] FM transmitter But if you use wireless speakers you don't get to introduce your neighbors who roam the FM dial to the joys of amateur radio! On 2 Mar 2006 at 21:28, Jim Miller WB5OXQ wrote: Get some wireless speakers. They come with a small 900mhz transmitter and usually work up to 150' though they claim 300. Around $60 a pair at radio shack __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
Is it not against regulations to broadcast music etc. on the HAM Bands? Warren - Original Message - From: Rev. Don Sanders [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 10:14 AM Subject: Re: [AMRadio] FM transmitter Better yet, set a 2 meter hand held to low power and feed receiver audio into the mike jack and use another hand held to listen. I do this on simplex freq 146.55 and can go 3 to 400 feet with no problem monitoring the net freq or dxpedition freq. Healthfully yours, DON - Original Message - From: Brian Carling [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 7:26 AM Subject: RE: [AMRadio] FM transmitter Yipes - for $399.00 it better be DARN good, LOL! On 2 Mar 2006 at 21:53, Bob Peters wrote: The best FM xmtr I have used is from Broadcast Vision in Ca. They are used in health clubs all over the USA. A little costly but work well. Are in Sterol and digital. The Crane does not work well. The Ramsey is very expensive.. Bob W1PE -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Miller WB5OXQ Sent: Thursday, March 02, 2006 9:28 PM To: Discussion of AM Radio Subject: Re: [AMRadio] FM transmitter Get some wireless speakers. They come with a small 900mhz transmitter and usually work up to 150' though they claim 300. Around $60 a pair at radio shack - Original Message - From: Donald Chester [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Thursday, March 02, 2006 4:40 PM Subject: [AMRadio] FM transmitter Hope they don't measure the FM broadcast transmitter I have, so I can listen while doing stuff around the house and yard with a walkman, its over a watt I think... What kind of FM transmitter do you use? I have been looking for something so I can use to feed streaming audio from my desktop computer to all the FM radios on my property, so I don't have to sit in front of the computer to listen. I ordered one of the little FM stereo xmtrs from C Crane. It had good synthesised frequency stability, but the audio was distorted and it had a range of about 35 feet. I need good solid coverage within a radius of at least 100 feet. I had intended to experiment with an external antenna with the thing, but it crapped out before I could do that. They refunded my money. I think Ramsey sells kits, but I have heard they are pieces of crap. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
Yup. He is talking about rebroadcasting hambands to hambands for HIMSELF.. Permitted under aux stations in FCC rules.. Mike - Original Message - From: Warren [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 5:32 PM Subject: Re: [AMRadio] FM transmitter Is it not against regulations to broadcast music etc. on the HAM Bands? Warren - Original Message - From: Rev. Don Sanders [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 10:14 AM Subject: Re: [AMRadio] FM transmitter Better yet, set a 2 meter hand held to low power and feed receiver audio into the mike jack and use another hand held to listen. I do this on simplex freq 146.55 and can go 3 to 400 feet with no problem monitoring the net freq or dxpedition freq. Healthfully yours, DON - Original Message - From: Brian Carling [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 7:26 AM Subject: RE: [AMRadio] FM transmitter Yipes - for $399.00 it better be DARN good, LOL! On 2 Mar 2006 at 21:53, Bob Peters wrote: The best FM xmtr I have used is from Broadcast Vision in Ca. They are used in health clubs all over the USA. A little costly but work well. Are in Sterol and digital. The Crane does not work well. The Ramsey is very expensive.. Bob W1PE -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Miller WB5OXQ Sent: Thursday, March 02, 2006 9:28 PM To: Discussion of AM Radio Subject: Re: [AMRadio] FM transmitter Get some wireless speakers. They come with a small 900mhz transmitter and usually work up to 150' though they claim 300. Around $60 a pair at radio shack - Original Message - From: Donald Chester [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Thursday, March 02, 2006 4:40 PM Subject: [AMRadio] FM transmitter Hope they don't measure the FM broadcast transmitter I have, so I can listen while doing stuff around the house and yard with a walkman, its over a watt I think... What kind of FM transmitter do you use? I have been looking for something so I can use to feed streaming audio from my desktop computer to all the FM radios on my property, so I don't have to sit in front of the computer to listen. I ordered one of the little FM stereo xmtrs from C Crane. It had good synthesised frequency stability, but the audio was distorted and it had a range of about 35 feet. I need good solid coverage within a radius of at least 100 feet. I had intended to experiment with an external antenna with the thing, but it crapped out before I could do that. They refunded my money. I think Ramsey sells kits, but I have heard they are pieces of crap. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
RE: [AMRadio] FM transmitter
They might appreciate hearing the other side of the QSO though... Brett -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Miller WB5OXQ Sent: Friday, March 03, 2006 2:28 PM To: [EMAIL PROTECTED]; Discussion of AM Radio Subject: Re: [AMRadio] FM transmitter Just trying to keep you out of trouble! ; ) I am sure my neighbors don't need a fm radio to hear my station especially when I am on AM! - Original Message - From: Brian Carling [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 7:23 AM Subject: Re: [AMRadio] FM transmitter But if you use wireless speakers you don't get to introduce your neighbors who roam the FM dial to the joys of amateur radio! On 2 Mar 2006 at 21:28, Jim Miller WB5OXQ wrote: Get some wireless speakers. They come with a small 900mhz transmitter and usually work up to 150' though they claim 300. Around $60 a pair at radio shack __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
YES - Original Message - From: Warren [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 4:32 PM Subject: Re: [AMRadio] FM transmitter Is it not against regulations to broadcast music etc. on the HAM Bands? Warren - Original Message - From: Rev. Don Sanders [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 10:14 AM Subject: Re: [AMRadio] FM transmitter Better yet, set a 2 meter hand held to low power and feed receiver audio into the mike jack and use another hand held to listen. I do this on simplex freq 146.55 and can go 3 to 400 feet with no problem monitoring the net freq or dxpedition freq. Healthfully yours, DON - Original Message - From: Brian Carling [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Friday, March 03, 2006 7:26 AM Subject: RE: [AMRadio] FM transmitter Yipes - for $399.00 it better be DARN good, LOL! On 2 Mar 2006 at 21:53, Bob Peters wrote: The best FM xmtr I have used is from Broadcast Vision in Ca. They are used in health clubs all over the USA. A little costly but work well. Are in Sterol and digital. The Crane does not work well. The Ramsey is very expensive.. Bob W1PE -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Miller WB5OXQ Sent: Thursday, March 02, 2006 9:28 PM To: Discussion of AM Radio Subject: Re: [AMRadio] FM transmitter Get some wireless speakers. They come with a small 900mhz transmitter and usually work up to 150' though they claim 300. Around $60 a pair at radio shack - Original Message - From: Donald Chester [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Thursday, March 02, 2006 4:40 PM Subject: [AMRadio] FM transmitter Hope they don't measure the FM broadcast transmitter I have, so I can listen while doing stuff around the house and yard with a walkman, its over a watt I think... What kind of FM transmitter do you use? I have been looking for something so I can use to feed streaming audio from my desktop computer to all the FM radios on my property, so I don't have to sit in front of the computer to listen. I ordered one of the little FM stereo xmtrs from C Crane. It had good synthesised frequency stability, but the audio was distorted and it had a range of about 35 feet. I need good solid coverage within a radius of at least 100 feet. I had intended to experiment with an external antenna with the thing, but it crapped out before I could do that. They refunded my money. I think Ramsey sells kits, but I have heard they are pieces of crap. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
From: Brian Carling [EMAIL PROTECTED] (This actually refers to the British licensing of radio and TV receivers. Both require a license and they actually go around in vans to ctach and punish persons listening without a license!) I have been told that those vans were purely psychological warfare and had no real means to detect receiving equipment. It was a scare tactic to frighten the public into thinking they had better purchase a licence. I suppose they could monitor TV sweep oscillator or local oscillators in superhets, but with hundreds of sets operating in a city environment it would have been difficult to pinpoint an unlicensed one. When I lived in France they had a similar law. But I went to a fleamarket and picked up an old 1930's vintage tombstone longwave/MW/SW broadcast receiver and used it, and nobody ever said anything. I remember it was quite a novelty amongst tenants in the apartment building, because most of them had never before seen one of those old radios actually work (this was in the early 70's). Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/
Re: [AMRadio] FM transmitter
Be very careful - keep your FM transmitters under the Part 15 limits or you might get busted! Putting a big antenna on even a low power unit will exceed the allowed limits I won't worry about it as long as the signal is not audible beyond the boundaries of my property. I live on 100 acres, and it's not anyone's damn business what rf environment I generate within the confines. In order to get coverage from the house to the ham shack, I need about 100 feet of solid range. The nearest house nextdoor to me is about 1000 ft. away. Even here, a relatively rural part of the country, the FM band is pretty well loaded. There are only a handful of open channels in the entire band. I suspect if a weak signal did leak across my property line, it would be totally swamped out because of the capture effect of FM. I'm not interested in transmitting on cell phone frequencies or SHF ham bands. I just want to extend the range of streaming audio to all the existing FM radios in my house and hamshack. This is not an amateur radio type of project. I'd rather concentrate my experimenting and building to my actual ham station. I am just looking for a high quality, low power transmitter than can be made to work with a minimum of effort and hassle. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/
RE: [AMRadio] FM transmitter
Don, The transmitter I pointed out, or a lower power version, will do very nicely, its got very good fidelity. To reduce the range, you can just use one of those rubber ducky antenna's. They used to sell .4 watt, 1 watt, and 4 watts. Mine has been working great for years, although I should check the range. Brett -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Donald Chester Sent: Friday, March 03, 2006 11:22 PM To: amradio@mailman.qth.net Subject: Re: [AMRadio] FM transmitter Be very careful - keep your FM transmitters under the Part 15 limits or you might get busted! Putting a big antenna on even a low power unit will exceed the allowed limits I won't worry about it as long as the signal is not audible beyond the boundaries of my property. I live on 100 acres, and it's not anyone's damn business what rf environment I generate within the confines. In order to get coverage from the house to the ham shack, I need about 100 feet of solid range. The nearest house nextdoor to me is about 1000 ft. away. Even here, a relatively rural part of the country, the FM band is pretty well loaded. There are only a handful of open channels in the entire band. I suspect if a weak signal did leak across my property line, it would be totally swamped out because of the capture effect of FM. I'm not interested in transmitting on cell phone frequencies or SHF ham bands. I just want to extend the range of streaming audio to all the existing FM radios in my house and hamshack. This is not an amateur radio type of project. I'd rather concentrate my experimenting and building to my actual ham station. I am just looking for a high quality, low power transmitter than can be made to work with a minimum of effort and hassle. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
[AMRadio] FM transmitter
Hope they don't measure the FM broadcast transmitter I have, so I can listen while doing stuff around the house and yard with a walkman, its over a watt I think... What kind of FM transmitter do you use? I have been looking for something so I can use to feed streaming audio from my desktop computer to all the FM radios on my property, so I don't have to sit in front of the computer to listen. I ordered one of the little FM stereo xmtrs from C Crane. It had good synthesised frequency stability, but the audio was distorted and it had a range of about 35 feet. I need good solid coverage within a radius of at least 100 feet. I had intended to experiment with an external antenna with the thing, but it crapped out before I could do that. They refunded my money. I think Ramsey sells kits, but I have heard they are pieces of crap. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/
RE: [AMRadio] FM transmitter
http://cgi.ebay.com/4-Watt-FM-Stereo-Broadcast-Radio-Transmitter-PLL-AGC_W0Q QitemZ5873268749QQcategoryZ4675QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Edit that to fit the browser. That is the one I have, its just like a broadcast station, with a good antenna, the range is very good. For some reason, mine came with a very large heat sink, maybe the new models are more efficient. I have it set up so the transmitter comes on when I power up the shack. I love old buzzard round tables as I can go make tea, smoke, use the can, sweep out the garage, etc, all while listening till its my turn. I made a 1/4 wave dipole out of a PL259 and coat hangers, and stuck it on my vent pipe on the roof. I never checked the range, its on 90.4 MHz. A good antenna would likely get me in trouble. 4 watts and a good antenna would likely go many miles. The ramsy ones are good for a few hundred feet tops and sound poor. Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Donald Chester Sent: Thursday, March 02, 2006 5:40 PM To: amradio@mailman.qth.net Subject: [AMRadio] FM transmitter Hope they don't measure the FM broadcast transmitter I have, so I can listen while doing stuff around the house and yard with a walkman, its over a watt I think... What kind of FM transmitter do you use? I have been looking for something so I can use to feed streaming audio from my desktop computer to all the FM radios on my property, so I don't have to sit in front of the computer to listen. I ordered one of the little FM stereo xmtrs from C Crane. It had good synthesised frequency stability, but the audio was distorted and it had a range of about 35 feet. I need good solid coverage within a radius of at least 100 feet. I had intended to experiment with an external antenna with the thing, but it crapped out before I could do that. They refunded my money. I think Ramsey sells kits, but I have heard they are pieces of crap. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. Try it - you'll like it. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
Re: [AMRadio] FM transmitter
- Original Message - I made a 1/4 wave dipole out of a PL259 and coat hangers, and stuck it on my vent pipe on the roof. I never checked the range, its on 90.4 MHz. A good antenna would likely get me in trouble. 4 watts and a good antenna would likely go many miles. That's an excellent way to lose your ham license while courting a $10,000 fine from the FCC for unlicensed operation. Current Part 15 rules permit a MAXIMUM field strength of 250 microvolts per meter at 3 meters from the transmitting antenna. If you check the FCC Enforcement Log, available on the Enforcement Bureau page of the Commission's Web site, you will see numerous people who got busted for transmitting in the FM broadcast band without a proper radio station license. A few of these show up every week. If the bootlegger is a college kid or a preacher who puts an unlicensed station on the air as a hobby or to broadcast his church services, he may get away with a warning not to do it again. Since you are a ham, and, therefore, licensed by the FCC, you would lose your license and be hit with a heavy fine. Your radio equipment could also be confiscated. In Florida, you would also face state charges, as the Sunshine State passed a law a couple of years ago that makes unlicensed operation in the broadcast bands a felony. BTW, the FCC just levied a massive fine against Ramsey Electronics for marketing export only FM broadcast transmitters that did not have FCC type acceptance for regular broadcast use. The bottom line is, such equipment is illegal. And the FCC is vigorously enforcing the rules that apply to the AM and FM broadcast bands. If you want to hear your AM roundtable while you are called away to the telephone or using the bathroom, get a good speaker, attach it to your receiver, and turn up the volume. Phil K2PG
Re: [AMRadio] FM transmitter
Moral of the story is this: Keep your eyes peeled for the Cat Detector Van. http://mzonline.com/bin/view/Python/FishLicenseSketch (This actually refers to the British licensing of radio and TV receivers. Both require a license and they actually go around in vans to ctach and punish persons listening without a license!) On 2 Mar 2006 at 19:54, Phil Galasso wrote: - Original Message - I made a 1/4 wave dipole out of a PL259 and coat hangers, and stuck it on my vent pipe on the roof. I never checked the range, its on 90.4 MHz. A good antenna would likely get me in trouble. 4 watts and a good antenna would likely go many miles. That's an excellent way to lose your ham license while courting a $10,000 fine from the FCC for unlicensed operation. Current Part 15 rules permit a MAXIMUM field strength of 250 microvolts per meter at 3 meters from the transmitting antenna. If you check the FCC Enforcement Log, available on the Enforcement Bureau page of the Commission's Web site, you will see numerous people who got busted for transmitting in the FM broadcast band without a proper radio station license. A few of these show up every week. If the bootlegger is a college kid or a preacher who puts an unlicensed station on the air as a hobby or to broadcast his church services, he may get away with a warning not to do it again. Since you are a ham, and, therefore, licensed by the FCC, you would lose your license and be hit with a heavy fine. Your radio equipment could also be confiscated. In Florida, you would also face state charges, as the Sunshine State passed a law a couple of years ago that makes unlicensed operation in the broadcast bands a felony. BTW, the FCC just levied a massive fine against Ramsey Electronics for marketing export only FM broadcast transmitters that did not have FCC type acceptance for regular broadcast use. The bottom line is, such equipment is illegal. And the FCC is vigorously enforcing the rules that apply to the AM and FM broadcast bands. If you want to hear your AM roundtable while you are called away to the telephone or using the bathroom, get a good speaker, attach it to your receiver, and turn up the volume. Phil K2PG __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
RE: [AMRadio] FM transmitter
Yet another choice is the 900 mhz cordless head phones. I remoted the transmitter in my attic and fed the audio up to it via shielded wire. I increased my range enough to cover most of my yard while mowing and it isn't a small yard. The other choice was to remote the transmitter t the top of the tower and see what it does. Since the transmitter has not had it's antenna changed and it is just higher off the ground I doubt there s an issue with the FCC. 73 Larry WA9VRH On Thu, 2 Mar 2006 20:02:29 -0500, Gary Schafer [EMAIL PROTECTED] wrote : If you want to hear your AM roundtable while you are called away to the telephone or using the bathroom, get a good speaker, attach it to your receiver, and turn up the volume. An old cordless phone would do the trick. 73 Gary K4FMX __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
RE: [AMRadio] FM transmitter
Well, I don't broadcast anything, I doubt the range is very good, I don't think anyone would complain about it being on an open frequency, and its only on when I operate, so I wont loose any sleep over it. I should check the range though, the lower power ones did not make it past my yard, and did not work very well in the yard The one I have may be 1 watt, they sold many different ones in the past, and I don't remember what one I got. I think its got a power adjustment, its all software controlled... If the range is greater then the yard, I can turn it down I guess. I tried the wireless headphones, they did not work worth a crap, they are good for a room, not much else. Brett -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Phil Galasso Sent: Thursday, March 02, 2006 7:55 PM To: Discussion of AM Radio Subject: Re: [AMRadio] FM transmitter - Original Message - I made a 1/4 wave dipole out of a PL259 and coat hangers, and stuck it on my vent pipe on the roof. I never checked the range, its on 90.4 MHz. A good antenna would likely get me in trouble. 4 watts and a good antenna would likely go many miles. That's an excellent way to lose your ham license while courting a $10,000 fine from the FCC for unlicensed operation. Current Part 15 rules permit a MAXIMUM field strength of 250 microvolts per meter at 3 meters from the transmitting antenna. If you check the FCC Enforcement Log, available on the Enforcement Bureau page of the Commission's Web site, you will see numerous people who got busted for transmitting in the FM broadcast band without a proper radio station license. A few of these show up every week. If the bootlegger is a college kid or a preacher who puts an unlicensed station on the air as a hobby or to broadcast his church services, he may get away with a warning not to do it again. Since you are a ham, and, therefore, licensed by the FCC, you would lose your license and be hit with a heavy fine. Your radio equipment could also be confiscated. In Florida, you would also face state charges, as the Sunshine State passed a law a couple of years ago that makes unlicensed operation in the broadcast bands a felony. BTW, the FCC just levied a massive fine against Ramsey Electronics for marketing export only FM broadcast transmitters that did not have FCC type acceptance for regular broadcast use. The bottom line is, such equipment is illegal. And the FCC is vigorously enforcing the rules that apply to the AM and FM broadcast bands. If you want to hear your AM roundtable while you are called away to the telephone or using the bathroom, get a good speaker, attach it to your receiver, and turn up the volume. Phil K2PG __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb
