Author Topic: Looking for a 12 DPDT relay for switching different preamps at my antenna.  (Read 2289 times)

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Offline QmavamTopic starter

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I want to to do A/B/C testing with different amps and a transformer between my antenna and feedline. I want a long lasting relay that will hold up in my outdoor enclosure.
I want a 12V DPDT relay. I'd like to keep the price under $5.
I had success with an NEC RSP24H2C12H, but I don't find them available anymore.
   Does anyone have a favorite they recommend?
                Thanks, Mikek
 

Online A.Z.

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Re: Looking for a 12 DPDT relay for switching different preamps at my antenna.
« Reply #1 on: December 20, 2023, 07:09:51 am »
check the Omron G5V-2-H DC12 should be ok for 30MHz and below, if instead you need to get up to VHF or above you'll need a coaxial relay and price will go up


« Last Edit: December 20, 2023, 07:15:17 am by A.Z. »
 

Offline geggi1

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Re: Looking for a 12 DPDT relay for switching different preamps at my antenna.
« Reply #2 on: December 20, 2023, 07:14:45 pm »
You cn also look into PIN diode switching.
 

Offline s54mtb

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Re: Looking for a 12 DPDT relay for switching different preamps at my antenna.
« Reply #3 on: December 30, 2023, 11:44:05 pm »
Hope this helps:

I have good experience with Fujitsu FTR-K1CK012W for HF. Here’s my project with them (intensively copied by aliexpress “producers”)…

https://e.pavlin.si/2017/11/26/6x1-antenna-switch/

There are measurements at the end of the page.
 

Online MarkF

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Re: Looking for a 12 DPDT relay for switching different preamps at my antenna.
« Reply #4 on: December 31, 2023, 02:51:56 am »
I use these Axicom V23105 relays.  But, not for RF frequencies.
From their datasheet:

   Isolation at 100MHz/900MHz                             -39.0dB / -20.7dB
   Insertion loss at 100MHz/900MHz                        -0.02dB / -0.27dB
   Voltage standing wave ratio (VSWR) at 100MHz/900MHz       1.04 / 1.40

Can that be right?
 


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