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Source of SM Latching Relays
Anyone know a good source of surface mount latching relays DPST or DPDT, 5V
to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
Saw some at a hamfest a few hours before I read this post. Can't recall the
dealer's name. They were around a buck or two apiece. Tom, N3IJ "Richard Hosking" wrote in message . au... Anyone know a good source of surface mount latching relays DPST or DPDT, 5V to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
Saw some at a hamfest a few hours before I read this post. Can't recall the
dealer's name. They were around a buck or two apiece. Tom, N3IJ "Richard Hosking" wrote in message . au... Anyone know a good source of surface mount latching relays DPST or DPDT, 5V to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
Richard,
How extremely strange. I just announced a week or so ago on a private forum that I was designing exactly the same thing. And I've also searched the net to see whether this was an original idea, and it seemed to be unique at the time. You wouldn't be another SDR-1000 owner by any chance? BTW, I'm still trying to locate relays also. My reply at the quoted $10.00 price from CIT was "Freow! Skip it!" or something similar. As you say, 20-30 of those makes it VERY expensive indeed. Rob Richard Hosking wrote: Anyone know a good source of surface mount latching relays DPST or DPDT, 5V to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
Richard,
How extremely strange. I just announced a week or so ago on a private forum that I was designing exactly the same thing. And I've also searched the net to see whether this was an original idea, and it seemed to be unique at the time. You wouldn't be another SDR-1000 owner by any chance? BTW, I'm still trying to locate relays also. My reply at the quoted $10.00 price from CIT was "Freow! Skip it!" or something similar. As you say, 20-30 of those makes it VERY expensive indeed. Rob Richard Hosking wrote: Anyone know a good source of surface mount latching relays DPST or DPDT, 5V to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
Rob
My long term goal is to design a backback portable HF SSB/data rig to compete with the current offerings (SG2020) and Elecraft. I will probably never get there! I think with some new ideas and SM technology I could get the current drain 100mA on receive and keep the size V small, while having digital programmability etc BTW I would be interested in formiong a cooperative group on this if anyone is interested. Richard Rob Judd wrote in message ... Richard, How extremely strange. I just announced a week or so ago on a private forum that I was designing exactly the same thing. And I've also searched the net to see whether this was an original idea, and it seemed to be unique at the time. You wouldn't be another SDR-1000 owner by any chance? BTW, I'm still trying to locate relays also. My reply at the quoted $10.00 price from CIT was "Freow! Skip it!" or something similar. As you say, 20-30 of those makes it VERY expensive indeed. Rob Richard Hosking wrote: Anyone know a good source of surface mount latching relays DPST or DPDT, 5V to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
Rob
My long term goal is to design a backback portable HF SSB/data rig to compete with the current offerings (SG2020) and Elecraft. I will probably never get there! I think with some new ideas and SM technology I could get the current drain 100mA on receive and keep the size V small, while having digital programmability etc BTW I would be interested in formiong a cooperative group on this if anyone is interested. Richard Rob Judd wrote in message ... Richard, How extremely strange. I just announced a week or so ago on a private forum that I was designing exactly the same thing. And I've also searched the net to see whether this was an original idea, and it seemed to be unique at the time. You wouldn't be another SDR-1000 owner by any chance? BTW, I'm still trying to locate relays also. My reply at the quoted $10.00 price from CIT was "Freow! Skip it!" or something similar. As you say, 20-30 of those makes it VERY expensive indeed. Rob Richard Hosking wrote: Anyone know a good source of surface mount latching relays DPST or DPDT, 5V to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
Further to this
I thought I would use a Palm Pilot as the mechanism for entering data/E mails and maybe even CW You could have an infrared port as the connection between them Has anyone done this? Richard Rob Judd wrote in message ... Richard, How extremely strange. I just announced a week or so ago on a private forum that I was designing exactly the same thing. And I've also searched the net to see whether this was an original idea, and it seemed to be unique at the time. You wouldn't be another SDR-1000 owner by any chance? BTW, I'm still trying to locate relays also. My reply at the quoted $10.00 price from CIT was "Freow! Skip it!" or something similar. As you say, 20-30 of those makes it VERY expensive indeed. Rob Richard Hosking wrote: Anyone know a good source of surface mount latching relays DPST or DPDT, 5V to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
Further to this
I thought I would use a Palm Pilot as the mechanism for entering data/E mails and maybe even CW You could have an infrared port as the connection between them Has anyone done this? Richard Rob Judd wrote in message ... Richard, How extremely strange. I just announced a week or so ago on a private forum that I was designing exactly the same thing. And I've also searched the net to see whether this was an original idea, and it seemed to be unique at the time. You wouldn't be another SDR-1000 owner by any chance? BTW, I'm still trying to locate relays also. My reply at the quoted $10.00 price from CIT was "Freow! Skip it!" or something similar. As you say, 20-30 of those makes it VERY expensive indeed. Rob Richard Hosking wrote: Anyone know a good source of surface mount latching relays DPST or DPDT, 5V to be driven by logic? I want to build an automatic antenna tuner for HF QRP Digikey has them but they areUS$12 ea and it is a bit too expensive if I want about 20 of them I would prefer a permanent source if possible - not only a temporary surplus - although this would be better than nothing Thanks in advance Richard |
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