KPA-1500/FlexRadio 6400
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This is my first post. I am not sure if or where the search function is located.
I am running a KPA-1500 and a FlexRadio 6400. The amplifier recognizes the band that the Flex is tuned to but it doesn’t recognize the frequency. Any help would be appreciated. I am not technically proficient with either the Flex or the KPA-1500, so please keep it simple for me. Thanks Mike, N1VE Sent from Mail for Windows 10 ______________________________________________________________ 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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Are you using the KXUSB cable from the amp transceiver port to back of Flex USB?
Make sure you are in the transceiver port on amp and not AUX port. On Flex USB cable setup make sure to enable Auto Report. Also select advanced and set baud to 38400, 8, none, 1, and flow control none. Cycle amp status to show XCVR FREQ and TX COUNT The top line should show actual radio frequency and bottom line the approximate detected RF frequency when you transmit. If you need assistance, contact me direct at my call at arrl.net and I can do a remote session with you using Team Viewer. Dave wo2x Sent from my waxed string and tin cans. > On Sep 15, 2020, at 7:34 PM, Mike Stone <[hidden email]> wrote: > > This is my first post. I am not sure if or where the search function is located. > > I am running a KPA-1500 and a FlexRadio 6400. The amplifier recognizes the band that the Flex is tuned to but it doesn’t recognize the frequency. Any help would be appreciated. I am not technically proficient with either the Flex or the KPA-1500, so please keep it simple for me. > Thanks > Mike, N1VE > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > 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 Michael Stone
Mike
I keep reading what you wrote, but how can you tell the difference? The Band data is the only thing that the KPA500 requires to operate. It really doesn't care about the exact frequency. If you change bands on the 6400 and the KPA500 tracks from 1 band to another, then your installation is fine and you should be good to go. I used a KPA500 for years on a Flex 6300 without issue. For cables, all that is required is a normal 9 pin male-female cable and then a Null Modem Gender Bender adapter (yes, that is what they are called). Mike va3mw On Tue, Sep 15, 2020 at 7:33 PM Mike Stone <[hidden email]> wrote: > This is my first post. I am not sure if or where the search function is > located. > > I am running a KPA-1500 and a FlexRadio 6400. The amplifier recognizes > the band that the Flex is tuned to but it doesn’t recognize the frequency. > Any help would be appreciated. I am not technically proficient with either > the Flex or the KPA-1500, so please keep it simple for me. > Thanks > Mike, N1VE > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > 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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Hi Mike
Actually the KPA1500 needs frequency tracking for the internal antenna tuner. The info I posted should help Mike. He is also welcome to contact me direct and I can assist. 73 Dave wo2x Sent from my waxed string and tin cans. > On Sep 15, 2020, at 10:17 PM, Michael Walker <[hidden email]> wrote: > > Mike > > I keep reading what you wrote, but how can you tell the difference? The > Band data is the only thing that the KPA500 requires to operate. It really > doesn't care about the exact frequency. > > If you change bands on the 6400 and the KPA500 tracks from 1 band to > another, then your installation is fine and you should be good to go. > > I used a KPA500 for years on a Flex 6300 without issue. For cables, all > that is required is a normal 9 pin male-female cable and then a Null Modem > Gender Bender adapter (yes, that is what they are called). > > Mike va3mw > > > > >> On Tue, Sep 15, 2020 at 7:33 PM Mike Stone <[hidden email]> wrote: >> >> This is my first post. I am not sure if or where the search function is >> located. >> >> I am running a KPA-1500 and a FlexRadio 6400. The amplifier recognizes >> the band that the Flex is tuned to but it doesn’t recognize the frequency. >> Any help would be appreciated. I am not technically proficient with either >> the Flex or the KPA-1500, so please keep it simple for me. >> Thanks >> Mike, N1VE >> >> >> Sent from Mail for Windows 10 >> >> ______________________________________________________________ >> 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] 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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oppsss... my bad!
I saw KPA500 (not 1500). Sorry about that. However, the cabling is the same. :) Mike va3mw On Tue, Sep 15, 2020 at 10:19 PM Dave <[hidden email]> wrote: > Hi Mike > > Actually the KPA1500 needs frequency tracking for the internal antenna > tuner. > > The info I posted should help Mike. He is also welcome to contact me > direct and I can assist. > > 73 > Dave wo2x > > > Sent from my waxed string and tin cans. > > > On Sep 15, 2020, at 10:17 PM, Michael Walker <[hidden email]> > wrote: > > > > Mike > > > > I keep reading what you wrote, but how can you tell the difference? The > > Band data is the only thing that the KPA500 requires to operate. It > really > > doesn't care about the exact frequency. > > > > If you change bands on the 6400 and the KPA500 tracks from 1 band to > > another, then your installation is fine and you should be good to go. > > > > I used a KPA500 for years on a Flex 6300 without issue. For cables, > all > > that is required is a normal 9 pin male-female cable and then a Null > Modem > > Gender Bender adapter (yes, that is what they are called). > > > > Mike va3mw > > > > > > > > > >> On Tue, Sep 15, 2020 at 7:33 PM Mike Stone <[hidden email]> > wrote: > >> > >> This is my first post. I am not sure if or where the search function is > >> located. > >> > >> I am running a KPA-1500 and a FlexRadio 6400. The amplifier recognizes > >> the band that the Flex is tuned to but it doesn’t recognize the > frequency. > >> Any help would be appreciated. I am not technically proficient with > either > >> the Flex or the KPA-1500, so please keep it simple for me. > >> Thanks > >> Mike, N1VE > >> > >> > >> Sent from Mail for Windows 10 > >> > >> ______________________________________________________________ > >> 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] > 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 Michael Walker
On 9/15/2020 7:14 PM, Michael Walker wrote:
> The > Band data is the only thing that the KPA500 requires to operate. Actually, beginning with the tuner that goes with the K3 and their KPA amps do NOT need band data -- they detect frequency with as little as a 35 wpm dit or a tap on the mic and nearly instantaneously switch to the right band, and, if they have been properly trained per their manual, to the detected spot in the band! My Alpha 87As are also pretty fast. I"ve NEVER used band data with any of these amps or Elecraft tuners (KAT500, KPA500, KPA1500) or with the Alpha 87As. I DO use band data to switch bandpass filters and to switch antennas. 73, Jim K9YC ______________________________________________________________ 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 Dave wo2x
On 9/15/2020 7:19 PM, Dave wrote:
> Actually the KPA1500 needs frequency tracking for the internal antenna tuner. NO, it does not. See my previous post. 73, Jim K9YC ______________________________________________________________ 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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Let me rephrase.
It needs frequency CAT data if you do not want to transmit into a high SWR or wrong band filters, even for a few milliseconds. I would rather have my station preset the amp to the proper band filters and tuner L & C before transmitting ANY RF into it. This way if I see something on another band or frequency ai want to work ai QSY and call CQ. If CAT is available I would much rather use it than depend on RF detection. I have had the three watt resistor on the KPA1500 heat up and fall off the board rendering the internal frequency counter useless. It took out one of the LDMOS devices. Dave wo2x Sent from my waxed string and tin cans. > On Sep 16, 2020, at 12:58 AM, Jim Brown <[hidden email]> wrote: > > On 9/15/2020 7:19 PM, Dave wrote: >> Actually the KPA1500 needs frequency tracking for the internal antenna tuner. > > NO, it does not. See my previous post. > > 73, Jim K9YC > ______________________________________________________________ > 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 Michael Stone
Hi Mike,
This seems to be a duplicate post (see http://elecraft.365791.n2.nabble.com/KPA-1500-FlexRadio-6400-td7665007.html), though I'm not sure if your questions were fully answered the first time. First, to search the archives of this reflector, go to http://elecraft.365791.n2.nabble.com/Elecraft-f365791.topics.html and use the search box, top right. To get the KPA-1500 to track the exact frequency of the Flex (before you do any transmitting), you need to set up a proper connection between the 3.5mm stereo jack on the back of the KPA1500 labeled "XCVR SERIAL" and one of the common USB Type A connectors on the back of the Flex. 1. Use any of the following to make a serial connection between the two devices: - FTDI USB-to-Serial adapter + Elecraft KXSER cable - Elecraft KXUSB cable - Serial Box USB (https://bit.ly/S-BOX) + stock serial and stereo cables 2. For amp. keying, connect an ordinary RCA male-to-male patch cable between the RCA connector on the back of the KPA1500 labeled "KEY IN" and the RCA connector on the back of the Flex labeled "TX1" 3. In the KPA1500 Menu, set RADIO TYPE: SERIAL SERIAL SPEED XCVR: 9600 RADIO POLL: ON 4. In the FlexRadio SmartSDR Setup, select the new serial adapter that appears when connected to the back of the Flex *Settings | USB Cables* Cable Type: *CAT* Source: *TX Slice* Auto-report: *Disabled* Advanced: *9600,8,N,1* Flow Control: *None **Settings | Radio Setup* Transmit tab RCA TX1: 5 ms Enabled The KPA1500 and its tuner (if enabled) will now automatically track the exact frequency of the Flex, and be keyed by the Flex when it goes into transmit. You can verify the frequency by setting TECH MODE to ENABLED in the KPA1500 menu, then scroll the STATUS page of the KPA1500 LCD until you see XCVR FREQ and TX COUNT displayed. XCVR FREQ is the frequency reported by the radio over the Serial connection. TX COUNT is the approximate frequency detected by the KPA1500's built-in frequency counter whenever you transmit. If you have trouble making this work, feel free to contact me directly. 73, Bob, N6TV https://bit.ly/Y-BOX https://bit.ly/S-BOX On Tue, Sep 15, 2020 at 4:33 PM Mike Stone <[hidden email]> wrote: > This is my first post. I am not sure if or where the search function is > located. > > I am running a KPA-1500 and a FlexRadio 6400. The amplifier recognizes > the band that the Flex is tuned to but it doesn’t recognize the frequency. > Any help would be appreciated. I am not technically proficient with either > the Flex or the KPA-1500, so please keep it simple for me. > Thanks > Mike, N1VE > > > Sent from Mail for Windows 10 > > ______________________________________________________________ > 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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