Re: [Elecraft] KPA500 Bypass Power Limit?
My KPA500 goes into PASS-THROUGH mode when the Power is set to Off, or the power is On but the unit is in Standby. It does not process the signal in any way, merely acknowledges its presence. It does not have a Bypass mode. In order to Bypass it, I need to move a couple of cables. My KAT500, however, does have a BYPASS mode in which it measures the SWR and makes a decision on whether or not to provide any additional processing, other than routing it to the preferred ANTENNA, based on my indicated preferences. 73.0 Lyn, W0LEN -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Saturday, December 26, 2020 1:55 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 Bypass Power Limit? On 12/25/2020 7:12 PM, Andy Durbin wrote: > KPA500 has no "BYPASS" mode. It is either Off, On in STBY, or On in OPER. Picky, picky, picky. :) When all of the power amps I'm aware of are in a mode usually called "Standby," meaning that they are powered up and ready to transmit, but are Bypassed. they are Bypassed. They are also Bypassed when turned off. And when tube amps are prevented from transmitting when their filaments are warming up, they are Bypassed. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to l...@lnainc.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 Bypass Power Limit?
On 12/25/2020 7:12 PM, Andy Durbin wrote: KPA500 has no "BYPASS" mode. It is either Off, On in STBY, or On in OPER. Picky, picky, picky. :) When all of the power amps I'm aware of are in a mode usually called "Standby," meaning that they are powered up and ready to transmit, but are Bypassed. they are Bypassed. They are also Bypassed when turned off. And when tube amps are prevented from transmitting when their filaments are warming up, they are Bypassed. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 Bypass Power Limit?
There was no question regarding if the amp had a bypass 'mode' It was as you quoted; "How much power can I run through a KPA500 that is in BYPASS" So in 'standby' mode the amp is 'in bypass' as its input is connected to its output. So it seems an unnecessary invalid initial answer to a question that did not exist regarding bypass mode. However ; "You may run up to 200 watts through the KPA500 in STBY." was on the money. On 26/12/20 1:12 pm, Andy Durbin wrote: "How much power can I run through a KPA500 that is in BYPASS" KPA500 has no "BYPASS" mode. It is either Off, On in STBY, or On in OPER. The KPA500 Owner's Manual says - "Transmitting - The POWER (W) and standing wave ratio (SWR) bargraphs are functional when the amplifier is in standby (STBY). Twenty-five watts from the driving transceiver will illuminate the first POWER LED. You may run up to 200 watts through the KPA500 in STBY." The answer to your question would appear to be "200 W". 73, Andy k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to vk4...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA500 Bypass Power Limit?
"How much power can I run through a KPA500 that is in BYPASS" KPA500 has no "BYPASS" mode. It is either Off, On in STBY, or On in OPER. The KPA500 Owner's Manual says - "Transmitting - The POWER (W) and standing wave ratio (SWR) bargraphs are functional when the amplifier is in standby (STBY). Twenty-five watts from the driving transceiver will illuminate the first POWER LED. You may run up to 200 watts through the KPA500 in STBY." The answer to your question would appear to be "200 W". 73, Andy k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 Bypass Power Limit?
as per the manual "You may run up to 100 watts through the KPA500 in STBY." On Friday, December 25, 2020, 08:01:49 PM EST, eric norris via Elecraft wrote: How much power can I run through a KPA500 that is in BYPASS, or turned off? That is, using exciter power only? Thanks! 73, Eric WD6DBM  __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to hlyin...@yahoo.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 Bypass Power Limit?
200-250w if it's safe. 73 Eric WD6DBM On Fri, Dec 25, 2020, 6:28 PM Michael Walker wrote: > Hi Eric > > A 100 watts works without issue. > > What sort of power did you have in mind? > > Mike > > > On Fri, Dec 25, 2020 at 8:01 PM eric norris via Elecraft < > elecraft@mailman.qth.net> wrote: > > > How much power can I run through a KPA500 that is in BYPASS, or turned > > off? That is, using exciter power only? > > Thanks! > > > > 73, Eric WD6DBM > > > >  > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to va...@portcredit.net > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to norrislawfi...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 Bypass Power Limit?
Hi Eric A 100 watts works without issue. What sort of power did you have in mind? Mike On Fri, Dec 25, 2020 at 8:01 PM eric norris via Elecraft < elecraft@mailman.qth.net> wrote: > How much power can I run through a KPA500 that is in BYPASS, or turned > off? That is, using exciter power only? > Thanks! > > 73, Eric WD6DBM > >  > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to va...@portcredit.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA500 Bypass Power Limit?
How much power can I run through a KPA500 that is in BYPASS, or turned off? That is, using exciter power only? Thanks! 73, Eric WD6DBM  __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
