Re: [Elecraft] Ten Tec Orion II and KPA500
Probably do not need pull-ups on the outputs. The KPA500 has pull-ups on its band inputs, with a series protective diode that isolates it from any external pull-ups. If you use the drivers with other equipment the pull-ups may be needed, but they should don’t be needed with just the KPA500. 73! Jack, W6FB > On Jan 16, 2021, at 5:44 PM, Joe Subich, W4TV wrote: > > > > or alternatively has anyone designed something home brew to > > achieve the purpose. > > Takes nothing more than a 74LS147 and some pull up resistors > on the inputs and inverters (or open collector transistors with > pull ups) on the outputs. The Orion II band outputs are open > collector - maximum pull-up current is specified in the Orion II > manual. > > Everything you need to know to roll your own is in the 74LS147 > data sheet. > > 73, > > ... Joe, W4TV > > > On 2021-01-16 6:58 PM, Barry Simpson wrote: >> Gooday all >> I use my Ten Tec Orion II with my KPA500 and usually try to manually switch >> bands rather than rely on the RF sensing. >> I would really like to use the band information output from the Orion II to >> automatically switch bands on the KPA500. >> Does anybody know of a band decoder which is compatible with both pieces of >> equipment or alternatively has anyone designed something home brew to >> achieve the purpose. >> Thanks in advance to anyone who can help. >> Barry Simpson VK2BJ > > > __ > 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 jackbrin...@me.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] Ten Tec Orion II and KPA500
> I am not sure about the O2 but it should fit to KPA. Not quite. According to the description this board takes BCD input and provides 12 one line per band active high outputs. It is just backward from what is needed to convert the Orion II "one line per band" output to the BCD for KPA500/KPA1500. 73, ... Joe, W4TV On 2021-01-17 5:20 PM, Petr, OK1RP/M0SIS wrote: Hi Barry, I know that I am coming too late...:) I found today this link for decoder: https://www.ebay.com/itm/12-Band-BCD-Decoder-Yaesu-Elecraft-Apache-Labs/203217549978?hash=item2f50b5ba9a:g:nWoAAOSwl5hf1e1Z I am not sure about the O2 but it should fit to KPA. Stay safe! - 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com MeWe: https://bit.ly/2HGPoDx MeWe: https://bit.ly/2FmwvDt -- __ 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] Ten Tec Orion II and KPA500
> or alternatively has anyone designed something home brew to > achieve the purpose. Takes nothing more than a 74LS147 and some pull up resistors on the inputs and inverters (or open collector transistors with pull ups) on the outputs. The Orion II band outputs are open collector - maximum pull-up current is specified in the Orion II manual. Everything you need to know to roll your own is in the 74LS147 data sheet. 73, ... Joe, W4TV On 2021-01-16 6:58 PM, Barry Simpson wrote: Gooday all I use my Ten Tec Orion II with my KPA500 and usually try to manually switch bands rather than rely on the RF sensing. I would really like to use the band information output from the Orion II to automatically switch bands on the KPA500. Does anybody know of a band decoder which is compatible with both pieces of equipment or alternatively has anyone designed something home brew to achieve the purpose. Thanks in advance to anyone who can help. Barry Simpson VK2BJ __ 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] Ten Tec Orion II and KPA500
Hi Barry, I know that I am coming too late...:) I found today this link for decoder: https://www.ebay.com/itm/12-Band-BCD-Decoder-Yaesu-Elecraft-Apache-Labs/203217549978?hash=item2f50b5ba9a:g:nWoAAOSwl5hf1e1Z I am not sure about the O2 but it should fit to KPA. Stay safe! - 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com MeWe: https://bit.ly/2HGPoDx MeWe: https://bit.ly/2FmwvDt -- Sent from: http://elecraft.365791.n2.nabble.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] Ten Tec Orion II and KPA500
Gooday all I use my Ten Tec Orion II with my KPA500 and usually try to manually switch bands rather than rely on the RF sensing. I would really like to use the band information output from the Orion II to automatically switch bands on the KPA500. Does anybody know of a band decoder which is compatible with both pieces of equipment or alternatively has anyone designed something home brew to achieve the purpose. Thanks in advance to anyone who can help. Barry Simpson VK2BJ __ 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
