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#1
Posted to alt.electronics
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Radio Antennae
I have a clock radio that uses the electrical plug as the antennae.
However, the reception in my bedroom is really bad during the summer months, but gets somewhat better in the winter months. Anyway, is there some type of connector plug that I can plug the radio in to get better reception? Any help appreciated, Chris |
#2
Posted to alt.electronics
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Radio Antennae
On Fri, 11 Aug 2006 00:20:19 -0400, Mathussic wrote:
I have a clock radio that uses the electrical plug as the antennae. However, the reception in my bedroom is really bad during the summer months, but gets somewhat better in the winter months. Anyway, is there some type of connector plug that I can plug the radio in to get better reception? Any help appreciated, Chris AM or FM, what frequency? Is there a connection on it for the antenna? Two or three wire cord? (some line cord antennas are a piece of steel crimped on the insulation of the power cord and attach to a screw on the back of the radio - you remove that and add a wire or dipole antenna to the screw) Are you able to have an external antenna where you live? Is it only some distant stations that give you problems? ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#3
Posted to alt.electronics
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Radio Antennae
On 2006-08-11, Mathussic wrote:
I have a clock radio that uses the electrical plug as the antennae. However, the reception in my bedroom is really bad during the summer months, but gets somewhat better in the winter months. those things never work well. Anyway, is there some type of connector plug that I can plug the radio in to get better reception? You could try an extension lead in various configurations and/or sitting the radio on a grounded platform, or a platform attached to an antenna, or at the focus of a reflector aimed at your radio station... Best solution is to replace it, tune it to a stronger station (one of those low power fm transmiietrs connected to a real radio), or open it up*and connect an external antenna. Bye. Jasen |
#4
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Radio Antennae
Well, how about some generalized answers to this question, that I've sought
answers to before as well. Let's assume: 1) 2 wire power cord 2) some problems w/local stations - draping the cord in weird/awkward positions can help 3) no external connector for antenna How about 2 answers?: 1) assume you don't/won't/can't open the case - only external mods 2) assume you could open case How about same info for battery powered atomic clock? I have one at my office that works OK near window, but can't get a signal when I put it where I want it. Many thanks, Steve "default" wrote in message ... On Fri, 11 Aug 2006 00:20:19 -0400, Mathussic wrote: I have a clock radio that uses the electrical plug as the antennae. However, the reception in my bedroom is really bad during the summer months, but gets somewhat better in the winter months. Anyway, is there some type of connector plug that I can plug the radio in to get better reception? Any help appreciated, Chris AM or FM, what frequency? Is there a connection on it for the antenna? Two or three wire cord? (some line cord antennas are a piece of steel crimped on the insulation of the power cord and attach to a screw on the back of the radio - you remove that and add a wire or dipole antenna to the screw) Are you able to have an external antenna where you live? Is it only some distant stations that give you problems? ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#5
Posted to alt.electronics
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Radio Antennae
On Fri, 11 Aug 2006 13:10:41 GMT, "Steve Saunders"
wrote: Well, how about some generalized answers to this question, that I've sought answers to before as well. Let's assume: 1) 2 wire power cord 2) some problems w/local stations - draping the cord in weird/awkward positions can help 3) no external connector for antenna Draping the wire around to improve the reception implies an FM VHF frequecy - should I assume that? With AM frequencies a large tuned loop antenna in close proximity to the internal ferrite antenna can dramatically improve reception. How about 2 answers?: 1) assume you don't/won't/can't open the case - only external mods The external things - design and build a pre-tuner to capture the signal from a real antenna and then capacitively couple it into the power line with a "gimick" cap like some aluminum foil wraped around a portion of the cord. 2) assume you could open case Locate the RF input and bring it to the outside of the case so you can add an antenna - probably want to disconnect the power cord antenna too - and take pains to make sure the installation is shock proof, since the chassis/common may not be isolated from the power line. Takes some knowledge to pull it off - ideally one wants a balanced input if it is VHF. How about same info for battery powered atomic clock? I have one at my office that works OK near window, but can't get a signal when I put it where I want it. There may not be much you can do about that without opening the case and adding an antenna - typically they receive one or more of the standard time broadcasts in the HF range - the building is probably inhibiting the signal. shock isn't an issue with battery power so that may be a good option - also check out the instructions, they may already have a solution. Many thanks, Steve "default" wrote in message .. . On Fri, 11 Aug 2006 00:20:19 -0400, Mathussic wrote: I have a clock radio that uses the electrical plug as the antennae. However, the reception in my bedroom is really bad during the summer months, but gets somewhat better in the winter months. Anyway, is there some type of connector plug that I can plug the radio in to get better reception? Any help appreciated, Chris AM or FM, what frequency? Is there a connection on it for the antenna? Two or three wire cord? (some line cord antennas are a piece of steel crimped on the insulation of the power cord and attach to a screw on the back of the radio - you remove that and add a wire or dipole antenna to the screw) Are you able to have an external antenna where you live? Is it only some distant stations that give you problems? ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#6
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Radio Antennae
On Fri, 11 Aug 2006 13:10:41 GMT, "Steve Saunders"
wrote: I made one other assumption - that the radio is working properly. A power line spike caused by lightening may have wiped out the first amplification stage. Has the problem always been present? Will it work properly in a wood frame building? How far away is(are) the station(s) and what is in the way? VHF and high frequencies are line-of-sight. 20-30 miles may be all as good as it gets with no proper antenna - with a good antenna in a good location that same signal could be good for 100+ miles. Put it on a ground floor surrounded by tall buildings, hills, or other obstructions and you will need an antenna mounted where it can catch some of the signal. Not a concern with AM radio as a rule. It is likely a location problem - type of building or surroundings are attenuating the signal too much. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#7
Posted to alt.electronics
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Radio Antennae
In 6ATCg.13989$LF4.930@dukeread05,
Mathussic mentions: I have a clock radio that uses the electrical plug as the antennae. However, the reception in my bedroom is really bad during the summer months, but gets somewhat better in the winter months. Anyway, is there some type of connector plug that I can plug the radio in to get better reception? Not directly, really. Best bet is to crack open the radio, find out the antenna lead and then connect the antenna to that. (I'm guessing it'll be a wire wrapped around the power chord some place inside the radio, it's quite doubtful to me anyhow.. that they'll connect straight to the AC line) Chances are, if you do that, it'll only inprove FM reception. I've never heard of such a device used as the AM antenna. For "improved" AM reception (improved in quotes, because this may and probably will actually worsen it..) I've wrapped wire around the ferrite rod, grounded one end and then use the other end of the wire as an antenna. Theory being.. find a way to inject a signal into the ferrite. In practice: Improved reception at the cost of having some strange tuning, hearing strong shortwave stations all across the dial. Fortunately, this can easily be undone if it's a problem (and you're careful with the wires) These are cheap tricks I've used in other various places.. of course.. the best bet is to find a "real" radio. :-) (I'd imagine if they did the antenna-via-powerline approach, they probably designed the radio circuitry as cheap as possible) Jamie -- http://podtronic.podro.com Podcast for hobby electronics Non-Professional / Kitchen table circuit design / Fun with electronics |
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