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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Relays\s+in\s+RX\s+array\s*$/: 13 ]

Total 13 documents matching your query.

1. Topband: Relays in RX array (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Tue, 21 Mar 2006 15:56:33 -0500
Can anyone point me toward a practical circuit for running a few ma at 12 volts through the relay contacts of an antenna switching system, so as to keep oxidation from building up? The subject has be
/archives//html/Topband/2006-03/msg00143.html (6,747 bytes)

2. Re: Topband: Relays in RX array (score: 1)
Author: "Ford Peterson" <ford@cmgate.com>
Date: Tue, 21 Mar 2006 16:45:38 -0600
Pete, I had a thread on here last year that discussed the topic at length. The bottom line was that all relays will be flaky due to oxidation and other issue on the contactors.--unless you run a bit
/archives//html/Topband/2006-03/msg00144.html (7,832 bytes)

3. Re: Topband: Relays in RX array (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Tue, 21 Mar 2006 19:02:55 -0500
at length. The bottom line was that all relays will be flaky due to oxidation and other issue on the contactors.--unless you run a bit of DC through them. I use regular 1-2 amp sealed DIP relays, an
/archives//html/Topband/2006-03/msg00145.html (8,294 bytes)

4. Re: Topband: Relays in RX array (score: 1)
Author: Ralph Matheny <mathenyr@marietta.edu>
Date: Tue, 21 Mar 2006 20:57:01 -0500 (EST)
I believe that is called "wetting" the contacts. You'll need either RF chokes or perhaps--if you used higher voltages--you could use resistors chosen to get a few ma of current. Memory tells me it do
/archives//html/Topband/2006-03/msg00146.html (7,190 bytes)

5. Re: Topband: Relays in RX array (score: 1)
Author: "Ford Peterson" <ford@cmgate.com>
Date: Tue, 21 Mar 2006 22:18:51 -0600
In a Rx array, I agree. Sealed switches are the way to go. But how much RF power do you dare run through a contact rated for 2amps at 30v or 60v? My assumption has always been that you needed to go t
/archives//html/Topband/2006-03/msg00147.html (10,750 bytes)

6. Re: Topband: Relays in RX array (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Wed, 22 Mar 2006 05:30:33 -0500
<In a Rx array, I agree. Sealed switches are the way to go. But how much RF power do you dare run through a contact rated for 2amps at 30v or 60v? My assumption has always been that you needed to go
/archives//html/Topband/2006-03/msg00149.html (8,136 bytes)

7. Re: Topband: Relays in RX array (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Wed, 22 Mar 2006 07:24:18 -0500
Actually I did in the subject line. I think a few 2-buck sealed relays will probably serve me just fine. Thanks to everyone. 73, Pete N4ZR _______________________________________________ Topband mail
/archives//html/Topband/2006-03/msg00150.html (8,238 bytes)

8. Re: Topband: Relays in RX array (score: 1)
Author: W0UN -- John Brosnahan <shr@swtexas.net>
Date: Wed, 22 Mar 2006 07:06:10 -0600
Actually, Ford, the SUBJECT line of Pete's message says it all! Look at the subject in the email you just sent! ;-) RX array it is. QRO needs no additional current to keep the contacts clean on the
/archives//html/Topband/2006-03/msg00151.html (10,283 bytes)

9. Re: Topband: Relays in RX array (score: 1)
Author: Steve London <n2ic@arrl.net>
Date: Wed, 22 Mar 2006 09:47:15 -0500
Ford and Tom, Can you provide some examples of "good" relays you have found, say, from the Mouser or Digikey catalog ? Frankly, it's a little daunting to go through 65 pages of relays, trying to sur
/archives//html/Topband/2006-03/msg00153.html (10,998 bytes)

10. Re: Topband: Relays in RX array (score: 1)
Author: "K9AY" <k9ay@k9ay.com>
Date: Wed, 22 Mar 2006 09:59:03 -0600
-- Agreed -- and as an additional note, many relays are designed for a slight wiping action as they make contact. I use the Tyco (OEG) OMI series for this reason -- they are sealed and have wiping a
/archives//html/Topband/2006-03/msg00154.html (8,977 bytes)

11. Re: Topband: Relays in RX array (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Thu, 23 Mar 2006 07:16:38 -0500
K9AY and KD9SV suggested the following: Tyco/OEG OJE-SH series (sealed case, 12 volt) for spdt Omron G2R series (sealed case, 24 volt) for dpdt Gary specifically suggested the Tyco OMI-SH series, spd
/archives//html/Topband/2006-03/msg00161.html (12,142 bytes)

12. Re: Topband: Relays in RX array (score: 1)
Author: Roger D Johnson <n1rj@adelphia.net>
Date: Thu, 23 Mar 2006 08:34:01 -0500
Info on contact materials see: http://relays.tycoelectronics.com/app_pdfs/13c3236.pdf It appears that, for RX applications, gold is the material of choice. 73, Roger -- Remember the USS Liberty (AGTR
/archives//html/Topband/2006-03/msg00162.html (8,446 bytes)

13. Re: Topband: Relays in RX array (score: 1)
Author: W2pm@aol.com
Date: Thu, 23 Mar 2006 20:02:26 EST
K9AY and KD9SV suggested the following: Tyco/OEG OJE-SH series (sealed case, 12 volt) for spdt Omron G2R series (sealed case, 24 volt) for dpdt Gary specifically suggested the Tyco OMI-SH series, spd
/archives//html/Topband/2006-03/msg00182.html (8,471 bytes)

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