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antenna switch?
Can anyone recommend an antenna switch that allows me to hook up 2 SW
receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . |
antenna switch?
It won't hurt anything to just split the cable into 2. The loss in signal
will be negligible... "Lisa Simpson" wrote in message .. . Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . |
antenna switch?
Telamon wrote: In article , "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . I looked around and nobody seems to make one. Sure they do! They are called splitters or multicouplers. dxAce Michigan USA |
antenna switch?
In article ,
dxAce wrote: Telamon wrote: In article , "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . I looked around and nobody seems to make one. Sure they do! They are called splitters or multicouplers. I didn't see any inexpensive ones made for HF. Plenty of them at higher frequencies or amplified units so who makes a simple unit for HF that is a transformer or resistive coupled that has PL-259 connectors? -- Telamon Ventura, California |
antenna switch?
On Wed, 21 Jun 2006 23:13:25 -0400, dxAce
wrote: Telamon wrote: In article , "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . I looked around and nobody seems to make one. Sure they do! They are called splitters or multicouplers. dxAce Michigan USA ICE makes some: HF, 0.5-30MHz, 2 outputs 111-2A $26.00 they also have an amplifed modle for 112-2A $42.00 Check out the website: http://www.arraysolutions.com/Produc...ceive%20Signal Happy Trails, Howard |
antenna switch?
dxAce wrote: Telamon wrote: In article , "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . I looked around and nobody seems to make one. Sure they do! They are called splitters or multicouplers. dxAce Michigan USA How dare you agree with me, Challenged Boy! |
antenna switch?
|
antenna switch?
Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . http://www.stridsberg.com/mca104a.htm Stridsberg is the consumer grade gear most scanner enthusiasts use. |
antenna switch?
In article ews.net,
"gravity" wrote: http://www.universal-radio.com/catalog/preamps.html i can't vouch for the quality. RF systems SP-1 looks like it but it's $99.95. I guess that's not unreasonable but seems a little high. I could build one for $20. Mini circuits have small transformers and you would need to buy a metal box and three PL-259 connectors. -- Telamon Ventura, California |
antenna switch?
|
antenna switch?
"Telamon" wrote in message ... In article ews.net, "gravity" wrote: http://www.universal-radio.com/catalog/preamps.html i can't vouch for the quality. RF systems SP-1 looks like it but it's $99.95. I guess that's not unreasonable but seems a little high. I could build one for $20. Mini circuits have small transformers and you would need to buy a metal box and three PL-259 connectors. http://www.universal-radio.com/catal...amps/1420.html apologies if the OP needs an active unit. Gravity -- Telamon Ventura, California |
antenna switch?
Telamon wrote: In article .com, wrote: Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . http://www.stridsberg.com/mca104a.htm Stridsberg is the consumer grade gear most scanner enthusiasts use. That's an active splitter for $185. Probably a good unit. I think DxAce uses one. Yep, Stridsberg is the one. dxAce Michigan USA |
antenna switch?
Telamon wrote:
In article , dxAce wrote: Telamon wrote: In article , "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . I looked around and nobody seems to make one. Sure they do! They are called splitters or multicouplers. I didn't see any inexpensive ones made for HF. Plenty of them at higher frequencies or amplified units so who makes a simple unit for HF that is a transformer or resistive coupled Stridsberg, or ICE makes the couplers. Your choice of connector may require mod, or adaptor. http://www.stridsberg.com/prod01.htm http://www.iceradioproducts.com/reco...ceive%20Signal |
One Antenna and Two Radios = One Antenna Switch ?
On 21 Jun 2006 18:31:24 -0700, "RHF"
wrote: LS, I perfer the Alpha-Delta to the Daiwa and MFJ Two Position Antenna Switches --for- connecting Overkill. Use a CATV A/B switch. |
antenna switch?
I'm using an Eavesdropper "C" antenna, if that helps. I'll look into your
recommendation - thank you! wrote in message oups.com... Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . What you really want is a multicoupler. http://www.macom.com/sigint/PDF/410.pdf This would do nicely. ;-) I think if you have an amplified antenna (wellbrook for instance), a simple passive splitter is passable for much of what you monitor. Of course, if the signal is weak, the splitter will add noise. For instance, I couldn't see using one for say AFN. |
antenna switch?
How so? I'm interested . . .
"Telamon" wrote in message ... Easier to make one than to buy one. -- Telamon Ventura, California |
antenna switch?
Thanx - I'll check it out!
"D Peter Maus" wrote in message ... Telamon wrote: In article , dxAce wrote: Telamon wrote: In article , "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . I looked around and nobody seems to make one. Sure they do! They are called splitters or multicouplers. I didn't see any inexpensive ones made for HF. Plenty of them at higher frequencies or amplified units so who makes a simple unit for HF that is a transformer or resistive coupled Stridsberg, or ICE makes the couplers. Your choice of connector may require mod, or adaptor. http://www.stridsberg.com/prod01.htm http://www.iceradioproducts.com/reco...ceive%20Signal |
antenna switch?
$20, eh?
"Telamon" wrote in message ... In article ews.net, "gravity" wrote: http://www.universal-radio.com/catalog/preamps.html i can't vouch for the quality. RF systems SP-1 looks like it but it's $99.95. I guess that's not unreasonable but seems a little high. I could build one for $20. Mini circuits have small transformers and you would need to buy a metal box and three PL-259 connectors. -- Telamon Ventura, California |
antenna switch?
"Lisa Simpson" wrote in message . .. $20, eh? A ferrite toroid, some magnet wire, 3 connectors and a box.. W4OP |
antenna switch?
Pictures-article to make your own-
http:/www.dxing.info/equipment/rolling_your_own_bryant.dx Kim Dale Parfitt wrote: "Lisa Simpson" wrote in message . .. $20, eh? A ferrite toroid, some magnet wire, 3 connectors and a box.. W4OP |
antenna switch?
dxAce wrote: Telamon wrote: In article .com, wrote: Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . http://www.stridsberg.com/mca104a.htm Stridsberg is the consumer grade gear most scanner enthusiasts use. That's an active splitter for $185. Probably a good unit. I think DxAce uses one. Yep, Stridsberg is the one. dxAce Michigan USA If you are going to use a splitter, you might as well go active. In either case (active or passive), you are going to get a bit more noise, but the active design should have better isolation. |
"Combo" Antenna Splitter and {Active} Pre-Amplifier - When You Want To Use One Antenna With Two Receivers
wrote:
dxAce wrote: Telamon wrote: In article .com, wrote: Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . http://www.stridsberg.com/mca104a.htm Stridsberg is the consumer grade gear most scanner enthusiasts use. That's an active splitter for $185. Probably a good unit. I think DxAce uses one. Yep, Stridsberg is the one. dxAce Michigan USA - If you are going to use a splitter, you might as well go active. - In either case (active or passive), you are going to get a bit - more noise, but the active design should have better isolation. For a "Combo" Antenna Splitter and {Active} Pre-Amplifier when you want to use One Antenna with Two Receivers : Then consider a Shortwave Receiver Antenna Tuner / Pre-Amplifier that has a built-in Antenna Switch for use with Two Radios and Two Antennas. The MFJ-959 Pre-Amplifier and Antenna Tuner comes to mind. http://www.universal-radio.com/catal...amps/2574.html READ - One Antenna and Two Radios = One Antenna Switch ? http://groups.yahoo.com/group/Shortw.../message/10245 http://groups.google.com/group/rec.r...3d96b7a4b7af4b hope this helps - iane ~ RHF |
"Combo" Antenna Splitter and {Active} Pre-Amplifier - When You Want To Use One Antenna With Two Receivers
In article .com,
"RHF" wrote: wrote: dxAce wrote: Telamon wrote: In article .com, wrote: Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . http://www.stridsberg.com/mca104a.htm Stridsberg is the consumer grade gear most scanner enthusiasts use. That's an active splitter for $185. Probably a good unit. I think DxAce uses one. Yep, Stridsberg is the one. dxAce Michigan USA - If you are going to use a splitter, you might as well go active. - In either case (active or passive), you are going to get a bit - more noise, but the active design should have better isolation. Snip More money, more complicated but the amplification can mitigate loss of signal and provide more isolation between outputs. -- Telamon Ventura, California |
antenna switch?
In article ,
D Peter Maus wrote: Telamon wrote: In article , dxAce wrote: Telamon wrote: In article , "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . I looked around and nobody seems to make one. Sure they do! They are called splitters or multicouplers. I didn't see any inexpensive ones made for HF. Plenty of them at higher frequencies or amplified units so who makes a simple unit for HF that is a transformer or resistive coupled Stridsberg, or ICE makes the couplers. Your choice of connector may require mod, or adaptor. http://www.stridsberg.com/prod01.htm http://www.iceradioproducts.com/reco...ceive%20Signal Well when someone says "Splitter" I think of a simple transformer or resistive unit. The stridsberg are powered, amplified units. Amplified units are better then the simple splitters unless you have signal power to spare. -- Telamon Ventura, California |
antenna switch?
In article ,
"Lisa Simpson" wrote: How so? I'm interested . . . "Telamon" wrote in message ... Easier to make one than to buy one. You can put three resistors 16.7 ohms each together in a metal box with three connectors or you could use a mini circuits transformer instead of the resistors. In dBm the transformer would have the outputs about -3.5 dBm and the resistor version would be -6 dBm. -- Telamon Ventura, California |
antenna switch?
Telamon wrote:
In article , D Peter Maus wrote: Telamon wrote: In article , dxAce wrote: Telamon wrote: In article , "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . I looked around and nobody seems to make one. Sure they do! They are called splitters or multicouplers. I didn't see any inexpensive ones made for HF. Plenty of them at higher frequencies or amplified units so who makes a simple unit for HF that is a transformer or resistive coupled Stridsberg, or ICE makes the couplers. Your choice of connector may require mod, or adaptor. http://www.stridsberg.com/prod01.htm http://www.iceradioproducts.com/reco...ceive%20Signal Well when someone says "Splitter" I think of a simple transformer or resistive unit. The stridsberg are powered, amplified units. Amplified units are better then the simple splitters unless you have signal power to spare. Each company makes both active and passive models. They're listed on the same page each. In fact, the Stridsberg passives actually use something similar to the Mini Circuits transformers, if not the Mini Circuits transformers themselves. For a two port installation, passive will usually get you there. More than that, and you're talking about a significant loss in level. For as many receivers as I have, I use the actives. And I have units from both companies. Practically, there is little difference between them beyond the roll off points. |
antenna switch?
In article ,
"Lisa Simpson" wrote: "Telamon" wrote in message ... In article ews.net, "gravity" wrote: http://www.universal-radio.com/catalog/preamps.html i can't vouch for the quality. RF systems SP-1 looks like it but it's $99.95. I guess that's not unreasonable but seems a little high. I could build one for $20. Mini circuits have small transformers and you would need to buy a metal box and three PL-259 connectors. $20, eh? Well maybe a little more. Mini circuits This has package leads PSCJ-2-1 1 to 200 MHz for $25.95 This is surface mount but you can solder wires to it like the one above SBTCJ-1W 1 to 750 MHz for $10.95 Radio Shack SO-239 $3.29 Aluminum box 270-238 $2.99 So $23.81 with the surface mount unit. -- Telamon Ventura, California |
antenna switch?
In article OqAmg.1$il.0@trnddc03,
"Dale Parfitt" wrote: "Lisa Simpson" wrote in message . .. $20, eh? A ferrite toroid, some magnet wire, 3 connectors and a box.. W4OP Yes, winding your own toroid would be cheaper than buying a mini circuits transformer. -- Telamon Ventura, California |
antenna switch?
Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . Try:http://www.dxing.info/equipment/rolling_your_own_bryant.dx He links to tests he made of three commercial units. I use the Mini Circuits ZFSC-2-1, they use BNC connectors which is what all of my SW radios use. Adaptors can be found at your local Radio Shack. I have built 2 of the units he discribes for friends and they work very well. You may, or may not, be interested in digging through pasts posts by me where I gave the real world results of using passive or non-amplifed "splitters". The slightly over 3dB of loss is trivial for most locations. I tried many A/B tests, with several different SW receivers, [R2000, R390, R392, R5000 DX398 and a AOR7030] in several locations [at home, in the woods, by Cumberland lake and on top of a "mountain" flatened by strip mining]. The quiter the location the more difference ~3dB made, but I never found anywhere where it was the deciding factor and could not find a signal that was "hearable" direct and gone through the splitter. Terry |
antenna switch?
Ok, I'm no longer interested! : } Seriously, I have no skills such that
this requires. I'd rather just purchase one already made. "Telamon" wrote in message ... In article , "Lisa Simpson" wrote: How so? I'm interested . . . "Telamon" wrote in message ... Easier to make one than to buy one. You can put three resistors 16.7 ohms each together in a metal box with three connectors or you could use a mini circuits transformer instead of the resistors. In dBm the transformer would have the outputs about -3.5 dBm and the resistor version would be -6 dBm. -- Telamon Ventura, California |
antenna switch?
I wound up ordering one from arraysolutions.com, the "ICE Model 111-2A ICE
111-2A Passive HF 0.5-30MHZ 2 outputs" for $26; not bad! "Lisa Simpson" wrote in message .. . I'm using an Eavesdropper "C" antenna, if that helps. I'll look into your recommendation - thank you! wrote in message oups.com... Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . What you really want is a multicoupler. http://www.macom.com/sigint/PDF/410.pdf This would do nicely. ;-) I think if you have an amplified antenna (wellbrook for instance), a simple passive splitter is passable for much of what you monitor. Of course, if the signal is weak, the splitter will add noise. For instance, I couldn't see using one for say AFN. |
antenna switch?
On Wed, 21 Jun 2006 23:38:03 GMT, "Lisa Simpson"
wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . Perhaps you want a small distribution amplifier? bob k5qwg |
antenna switch?
I might if I knew what is was & how I would benefit from owning it!
"Bob Miller" wrote in message ... On Wed, 21 Jun 2006 23:38:03 GMT, "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . Perhaps you want a small distribution amplifier? bob k5qwg |
antenna switch?
In article ,
"Lisa Simpson" wrote: I wound up ordering one from arraysolutions.com, the "ICE Model 111-2A ICE 111-2A Passive HF 0.5-30MHZ 2 outputs" for $26; not bad! "Lisa Simpson" wrote in message .. . I'm using an Eavesdropper "C" antenna, if that helps. I'll look into your recommendation - thank you! wrote in message oups.com... Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . What you really want is a multicoupler. http://www.macom.com/sigint/PDF/410.pdf This would do nicely. ;-) I think if you have an amplified antenna (wellbrook for instance), a simple passive splitter is passable for much of what you monitor. Of course, if the signal is weak, the splitter will add noise. For instance, I couldn't see using one for say AFN. Yeah, that is a cheap price. -- Telamon Ventura, California |
antenna switch?
On Fri, 23 Jun 2006 01:45:01 GMT, "Lisa Simpson"
wrote: I might if I knew what is was & how I would benefit from owning it! "Bob Miller" wrote in message .. . On Wed, 21 Jun 2006 23:38:03 GMT, "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . Perhaps you want a small distribution amplifier? bob k5qwg My main familiarity was in using one to feed a single audio tape to 16 different radio stations, simultaneously, over the phone lines. One input, 16 outputs; they're made in all sorts of configurations. If you Google "distribution amplifier" you might find something that would work for feeding two radios; then again, I don't really know... :-) The mfj-4706 coax patch panel also looks interesting, tho' I don't know if you can receive to both radios at the same time. bob k5qwg |
antenna switch?
Bob Miller wrote: On Fri, 23 Jun 2006 01:45:01 GMT, "Lisa Simpson" wrote: I might if I knew what is was & how I would benefit from owning it! "Bob Miller" wrote in message .. . On Wed, 21 Jun 2006 23:38:03 GMT, "Lisa Simpson" wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . Perhaps you want a small distribution amplifier? bob k5qwg My main familiarity was in using one to feed a single audio tape to 16 different radio stations, simultaneously, over the phone lines. One input, 16 outputs; they're made in all sorts of configurations. If you Google "distribution amplifier" you might find something that would work for feeding two radios; then again, I don't really know... :-) The mfj-4706 coax patch panel also looks interesting, tho' I don't know if you can receive to both radios at the same time. bob k5qwg RF patch bays show up once in a while at flea markets. This assumes all you want is a switch and not a multicoupler. If you buy one, get the jumpers at the same time as they are all a little different. In fact, you should ohm out the path, i.e. jumper and patch bay. Another item you see once in a while at the flea market is the hp59307. About $20. I never measure the response of the switch, but I can't belive it wouldn't work well for HF. http://cgi.ebay.com/Hewlett-Packard-HP-59307A-VHF-Switch_W0QQitemZ7523913977QQcategoryZ25400QQcmdZVi ewItem |
"Combo" Antenna Splitter and {Active} Pre-Amplifier - When You Want To Use One Antenna With Two Receivers
In article .com,
"RHF" wrote: Telamon wrote: In article .com, "RHF" wrote: wrote: dxAce wrote: Telamon wrote: In article .com, wrote: Lisa Simpson wrote: Can anyone recommend an antenna switch that allows me to hook up 2 SW receivers to 1 antenna? Maybe a switch is not what I mean, as I'd like to be able to receive on both receivers at the same time . . . http://www.stridsberg.com/mca104a.htm Stridsberg is the consumer grade gear most scanner enthusiasts use. That's an active splitter for $185. Probably a good unit. I think DxAce uses one. Yep, Stridsberg is the one. - If you are going to use a splitter, you might as well go active. - In either case (active or passive), you are going to get a bit - more noise, but the active design should have better isolation. Snip More money, more complicated but the amplification can mitigate loss of signal and provide more isolation between outputs. Telamon - true, True. TRUE ! :o) ~ RHF However - Some Shortwave Listeners (SWL's) like to have that Extra Box with All-the-Knobs on it to play with so that 'they' can "Feel" that 'they' are in CONTROL ! Then Again - Other Shortwave Listeners (SWL's) are very Happy with a 9:1 Matching Transformer at the Antenna and a Coax Cable feed-in-line : For the very fact that 'they' can Install-It-and-Forget-It - Happy to simply Enjoy Listening to Their-Radios without the need for any "Extra Knobs" to Play-With. { Please Don't Make It Complicated ! } Since - I am down in Oakland, CA for the Night - I told a look around sub-basement # 3 and found an old Grove TUN-4 that is very much like the MFJ-959 unit. Looks like a good unit. It has an amplifier that you can bypass with a switch, has an antenna selector switch and a tuner to peak a signal. -- Telamon Ventura, California |
antenna switch?
In article vWTmg.2116$Xn.1378@trnddc05,
"Dale Parfitt" wrote: The one other thing I would mention, why not a "T" coax connector, with high quality jumpers going to each receiver? I doubt you'd lose much signal, if any, with that setup. See my earlier post on problems with this approach. You mentioned interaction between the radios because there is no isolation with a "T" connector. There would also be a 2:1 mismatch. -- Telamon Ventura, California |
antenna switch?
"Telamon" wrote in message ... In article vWTmg.2116$Xn.1378@trnddc05, "Dale Parfitt" wrote: The one other thing I would mention, why not a "T" coax connector, with high quality jumpers going to each receiver? I doubt you'd lose much signal, if any, with that setup. See my earlier post on problems with this approach. You mentioned interaction between the radios because there is no isolation with a "T" connector. There would also be a 2:1 mismatch. -- Telamon Ventura, California Correct. In addition, the actual signal delivered to one receiver could well depend on what freq the otehr receiver is tuned to. The degree would depend on how each receiver's front end is tuned If it is a tracing band pass filter, the results could be very very odd. If one receiver is a regen...well, that's a nightmare. Dale W4OP |
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