I've been using these relay modules for control switching with Raspberry
Pi's, and they work great.
Has anyone performed any experiments/measurements on their suitability as RF
switching relays? Could they perform antenna selection from the common coax
to one-of-eight SO-239 outputs?
-larry (K8UT)
-----Original Message-----
From: Herbert Schoenbohm
Sent: Sunday, December 13, 2015 3:36 PM
To: cq-contest@contesting.com
Subject: Re: [CQ-Contest] RELAY SWITCHING
This Arduino 8X1 is superb at controlling a DXE 5 KW box mounted at the
base of the tower with CAT 5 cable 150 feet long. The Arduino is in the
shack driven by the AUX output of the Ameritron RCS-12 which provides
either automatic BCD selection from the Icom or manual selection by the
RCS-12 push buttons. If you don't use the RCS-12 a small rotary switch
with a wall wart will work. You can't beat the price.
http://www.ebay.com/itm/5V-8-Channel-Relay-Module-Board-for-Arduino-PIC-AVR-MCU-DSP-ARM-Electronic-/360724151178?hash=item53fcd5bb8a:g:d4kAAMXQ2dBSFhh1
Herb Schoenbohm. KV4FZ
On 12/11/2015 6:01 PM, Pete Smith N4ZR wrote:
Joe, there is a large family of such things available from China. I had
one working to switch my RX antennas. I coupled the 315MHz RF to the
inner condfuctor of 300 feet of coax and picked off the "wireless" signal
at the other end. It switched fine, but I had trouble with other aspects
of the setup - losses in the DX coupler for the relay power - and
eventually scrapped the thing. The relays may be a bit light for transmit
antenna switching, but should certainly work to switch other, heavier
relays.
My experiment is written up in NCJ for May-June 2014
73, Pete N4ZR
Download the new N1MM Logger+ at
<http://N1MM.hamdocs.com>. Check
out the Reverse Beacon Network at
<http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.
On 12/11/2015 10:58 AM, Joe wrote:
I was thinking of using one of these "AS IS" and if not strong enough to
use them to control the actual heavier relays.
http://www.goodluckbuy.com/12v-8-channel-wireless-rf-switch-relayremote-control-315mhz-for-light.html
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 12/11/2015 8:44 AM, Chuck Dietz wrote:
Did you get any responses to this? I am interested. I have a number of
antennas to switch and would like to get rid of the wires.
Chuck W5PR
On Thu, Dec 10, 2015 at 5:19 PM, Trent Sampson <vk4ts@outlook.com>
wrote:
Having noticed a new change of tack by manufacturers to IP based
antenna
selection and a plethora of IP/ Relay driven devices reasonably priced
on
Ebay -
Has anyone had any success using these items (EBAY) to control the
likes
of Six Packs or switched bandpass filters - and integrating with N1MM
or
the like ?
Regards
TrentVK4TS PO Box 275 Mooloolaba 4557 0408497550
Please note I no longer use the WIA email address where possible owing
to
it blocking emails from sites such as VK Logger and ARRL.
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
|