Steve,
My application is really coarse. There was a multi-rig switching unit
featured in QST/QEX in the last year which had the relays mounted there.
The same relay (under the shrack name) is used on the KK1L 2x6 switch and
that board is made on a more pro level. I'm sure there are others.
Ameritron has been using this design for years now in their switches since
moving away from the frame type.
Lot of pictures here on the KK1L site:
http://home.comcast.net/~kk1l/kk1l_2x6switch/switch_page.html
Start there for some good ideas.
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
-----Original Message-----
From: Steve
Sent: Thursday, July 12, 2012 4:10 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Sources of Coax Relays
Jeff,
Is there a web site showing how you or others have mounted, wired and
used these relays to switch coaxes with UHF connectors?
Thanks.
Steve K8JQ
On 7/12/2012 12:10 PM, Jeff Blaine wrote:
> Jim,
>
> Check out the Tyco RTD 14012. Available in a 24v version as well.
>
> Has nice short contacts keeping the L low. Very tough.
>
> 73/jeff/ac0c
> www.ac0c.com
> alpha-charlie-zero-charlie
>
> -----Original Message-----
> From: Pete Smith N4ZR
> Sent: Thursday, July 12, 2012 10:34 AM
> To: TowerTalk
> Subject: Re: [TowerTalk] Sources of Coax Relays
>
> I've used dozens of $2 PC board power relays over the years in various
> antenna switching applications, and have never had a failure at >1300
> watts and SWRs from 1:1 up to over 3:1. W2VJN reported similar, much
> more rigorously tested results at TopTen Devices. I don't see any
> reason to gild this lily further.
>
> 73, Pete N4ZR
> The World Contest Station Database, at www.conteststations.com
> The Reverse Beacon Network at http://reversebeacon.net, blog at
> reversebeacon.blogspot.com,
> spots at telnet.reversebeacon.net, port 7000 and
> arcluster.reversebeacon.net, port 7000
>
> On 7/12/2012 9:20 AM, Jim Lux wrote:
>> On 7/11/12 8:58 PM, Jim Brown wrote:
>>> I'm looking for good quality coax relays for use at the 1,5kW level.
>>> Some will be used only on 160M, most will be used on the HF bands. I may
>>> have a use for a few at the 200W level on 2M. Some will be used for 6-
>>> or 8-position switching to radios, while others will be used with very
>>> different logic. I'm hoping that I can do everything with 12VDC or
>>> 24VDC. Nearly all will be used indoors, but I need at least one or two
>>> that are easy to weatherproof.
>>>
>>> I've got a couple of the Array Solutions products, but I'm not thrilled
>>> with the relays that are used.
>>>
>> What about those doesn't thrill you?
>>
>>
>> I assume you're looking for something reasonably inexpensive, that is,
>> you're looking to repurpose a conventional DC-60Hz kind of power relay
>> to RF.
>>
>> There's been quite a lot of discussion on this list (and others) over
>> the years about which relays seem to work better or worse. Complicating
>> this is that a model number that worked 10 years ago might not work
>> today: it will have the same pinout, contact configuration, and 60 Hz
>> performance, but the RF properties could be quite different.
>>
>> It sounds like you're going to need a lot of relays in the long run
>> (dozens), so maybe the thing to do is to build some little PC boards
>> that hold one relay and do some testing?
>> _______________________________________________
>>
>>
>>
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>>
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