Mike Gilmer - N2MG wrote:
> These are the same type of Aromat relays (JW series)
> found in Array Solutions StackMatch boxes.
> They are available at Digikey for, as Pete noted, ~$2
> in small qty - SPDT, DPDT and various coil voltages.
> Mike N2MG
> N4ZR wrote:
>>At 02:25 PM 8/12/03 -0700, Jim Lux wrote:
>>>Hopefully, too, the mfr has actually tested the
>>>particular relay at RF rather than blindly scaling
>>>from 60 Hz databook values. If you're making
>>>a thousand radios, it's worth it to do so.
>>It's in this connection that I recall a post by
>>W2VJN some years ago recounting tests of the relays
>>used in their TopTen relay boxes. Despite the fact
>>that these 10A-rated relays are very small, and only
>>cost about $2 each in small quantities, George told
>>of successfully testing them repeatedly at full
>>legal power. Sort of undermines the big is best
>>For details, check
> PeoplePC: It's for people. And it's just smart.
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
> TowerTalk mailing list
Are not all relay specs for hot switching and with the load applied? I
can't think where, in any antenna or pi-net circuit, that the relay does
not switch "cold". Even QSK, with all the sequencing. Even the
transceivers with band changes are not key-down. I replaced the TR relay
in an Icom 735 with some Radio Shack look-alike, little reed thing, and
it still works fine.
Does someone want to guess at the ratings "after contact". Used to be a
spec on Dow-Keys of DB isolation, sure were smallish contacts for KW of