Low Voltage Band Data Output
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Low Voltage Band Data Output
 
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Hi Folks,
I thought it was me, but I guess not... When I hook up a cable to the ACC plug for band data output, I get about 4.8v (slightly less than 5v). When I hook up the radio to any antenna switch that has band data input, the voltage goes down to 3v. This is not enough to drive the antenna switches. This is a new KIO3B board, so is it a bad board? Is there something else not set right that I am missing?? I didn't anything in the manuals.. TNX Will WC2L -- William Liporace WC2L http://www.wc2l.com or http://dxc.wc2l.com AR-Cluster Node telnet dxc.wc2l.com or 144.93 MHz [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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The open collector outputs is
F the K3 or K3s are lightly pulled up then fed thru a series resistor. Your decode must have adequate buffering in place to avoid drawing excessive current. A cmos buffer chip will do the trick. 73 Jim ab3cv (got the t shirt) On Jul 4, 2018, at 11:55 AM, William Liporace <[hidden email]> wrote: Hi Folks, I thought it was me, but I guess not... When I hook up a cable to the ACC plug for band data output, I get about 4.8v (slightly less than 5v). When I hook up the radio to any antenna switch that has band data input, the voltage goes down to 3v. This is not enough to drive the antenna switches. This is a new KIO3B board, so is it a bad board? Is there something else not set right that I am missing?? I didn't anything in the manuals.. TNX Will WC2L -- William Liporace WC2L http://www.wc2l.com or http://dxc.wc2l.com AR-Cluster Node telnet dxc.wc2l.com or 144.93 MHz [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Low Voltage Band Data Output
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In reply to this post by William Liporace - WC2L
I really should have said antenna switch controller. I have two
controllers. A) Is the DX Solutions SAS-6 (Smart Antenna Switch-6) B) The KK1L 2x6 Controller. Both devices worked flawlessly from the FTdx5000. Will WC2L On 7/4/2018 11:55 AM, William Liporace wrote: > Hi Folks, > I thought it was me, but I guess not... When I hook up a cable to the > ACC plug for band data output, I get about 4.8v (slightly less than > 5v). When I hook up the radio to any antenna switch that has band data > input, the voltage goes down to 3v. This is not enough to drive the > antenna switches. This is a new KIO3B board, so is it a bad board? Is > there something else not set right that I am missing?? I didn't > anything in the manuals.. > > TNX Will WC2L William Liporace WC2L http://www.wc2l.com or http://dxc.wc2l.com AR-Cluster Node telnet dxc.wc2l.com or 144.93 MHz [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Low Voltage Band Data Output
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It won’t directly drive either. The K3/K3S outputs BCD band data. You need a decoder box to convert that into direct drive signals (high side drive) for both of the antenna switches.
The Elecraft KRC2 will do the job quite well, as will quite a few other boxes. Be sure they have TTL-level inputs. The ones with opto-isolators tend to require quite a bit of current, more than the K3/K3S may be able to drive. Some will work, others, even from the same manufacturer will not. 73, Jack, W6FB > On Jul 4, 2018, at 12:55 PM, William Liporace <[hidden email]> wrote: > > I really should have said antenna switch controller. I have two controllers. > A) Is the DX Solutions SAS-6 (Smart Antenna Switch-6) > B) The KK1L 2x6 Controller. > Both devices worked flawlessly from the FTdx5000. > > Will WC2L > > On 7/4/2018 11:55 AM, William Liporace wrote: >> Hi Folks, >> I thought it was me, but I guess not... When I hook up a cable to the ACC plug for band data output, I get about 4.8v (slightly less than 5v). When I hook up the radio to any antenna switch that has band data input, the voltage goes down to 3v. This is not enough to drive the antenna switches. This is a new KIO3B board, so is it a bad board? Is there something else not set right that I am missing?? I didn't anything in the manuals.. >> >> TNX Will WC2L > -- > > William Liporace WC2L > http://www.wc2l.com or http://dxc.wc2l.com > AR-Cluster Node telnet dxc.wc2l.com or 144.93 MHz > [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Jim Miller
I have no problem feeding the band data directly into Arduino
input ports. (I homebrewed the antenna switch controller.) I wonder about the load from your antenna switch controller. You may need additional pullup resistors. The K3S manual says, "External pull-up resistors can be connected a voltage not exceeding 14 V." 73 Bill AE6JV On 7/4/18 at 10:45 AM, [hidden email] (Jim Miller) wrote: >The open collector outputs is >F the K3 or K3s are lightly pulled up then fed thru a series >resistor. Your decode must have adequate buffering in place to >avoid drawing excessive current. A cmos buffer chip will do the trick. >73 > >Jim ab3cv (got the t shirt) > >On Jul 4, 2018, at 11:55 AM, William Liporace <[hidden email]> wrote: > >Hi Folks, >I thought it was me, but I guess not... When I hook up a cable >to the ACC plug for band data output, I get about 4.8v >(slightly less than 5v). When I hook up the radio to any >antenna switch that has band data input, the voltage goes down >to 3v. This is not enough to drive the antenna switches. This >is a new KIO3B board, so is it a bad board? Is there something >else not set right that I am missing?? I didn't anything in the manuals.. > >TNX Will WC2L > Bill Frantz | Security is like Government | Periwinkle (408)356-8506 | services. The market doesn't | 16345 Englewood Ave www.pwpconsult.com | want to pay for them. | Los Gatos, CA 95032 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Low Voltage Band Data Output
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In reply to this post by William Liporace - WC2L
OK, the answer was to put a lower resistor in the input.
All I needed was 100 ohm jumper. Will WC2L On 7/4/2018 3:55 PM, William Liporace wrote: > > I really should have said antenna switch controller. I have two > controllers. > A) Is the DX Solutions SAS-6 (Smart Antenna Switch-6) > B) The KK1L 2x6 Controller. > Both devices worked flawlessly from the FTdx5000. > > Will WC2L > > On 7/4/2018 11:55 AM, William Liporace wrote: >> Hi Folks, >> I thought it was me, but I guess not... When I hook up a cable to the >> ACC plug for band data output, I get about 4.8v (slightly less than >> 5v). When I hook up the radio to any antenna switch that has band >> data input, the voltage goes down to 3v. This is not enough to drive >> the antenna switches. This is a new KIO3B board, so is it a bad >> board? Is there something else not set right that I am missing?? I >> didn't anything in the manuals.. >> >> TNX Will WC2L > -- > William Liporace WC2L > http://www.wc2l.com orhttp://dxc.wc2l.com > AR-Cluster Node telnet dxc.wc2l.com or 144.93 MHz > [hidden email] -- William Liporace WC2L http://www.wc2l.com or http://dxc.wc2l.com AR-Cluster Node telnet dxc.wc2l.com or 144.93 MHz [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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