[Amps] 4 KW?

[Alek Petkovic]

And those FU728F tubes are junk. It is all but impossible to get a good 
one these days. The supply has completely dried up.

I would not touch an amplifier that uses that tube.

73, Alek, VK6APK

On 24/06/2022 8:11 am, AB2E Darrell wrote:
> I forgot to mention, I own an OM Power 2000A+, uses a single FU728F tube. 2300W into the dummy load, no problem.
> 15W drive on 160m gives me legal power, typically 20-25W on most other bands, and it has 6m.
> Beautiful amps.
> The 4001A uses 2 of those FU728F tubes!
> 73 Darrell AB2E
>
> ________________________________
> From: Amps <amps-bounces at contesting.com> on behalf of AB2E Darrell <ab2e at hotmail.com>
> Sent: Thursday, June 23, 2022 8:04 PM
> To: ve3rwj at winsystem.org <ve3rwj at winsystem.org>; amps at contesting.com <amps at contesting.com>
> Subject: Re: [Amps] 4 KW?
>
>
> Yes, distributed by Array Solutions, $8850
> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.arraysolutions.com%2Fom-power%3Fproduct_id%3D14952&data=05%7C01%7C%7Cd3b70bfc5414416e0b7408da55752cac%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637916259046324347%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=1BtTS%2F4aON6gbwCnYewolkY3hspYV%2BZJtrrTAw1x9%2Fg%3D&reserved=0
> 73 Darrell AB2E
>
> The OM4000A is a memorized tuning settings HF amplifier. More than 4000 W peak output.<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.arraysolutions.com%2Fom-power%3Fproduct_id%3D14952&data=05%7C01%7C%7Cd3b70bfc5414416e0b7408da55752cac%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637916259046324347%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=1BtTS%2F4aON6gbwCnYewolkY3hspYV%2BZJtrrTAw1x9%2Fg%3D&reserved=0>
> The OM4000A is a memorized tuning settings HF amplifier. More than 4000 W peak output. Continuous 2500 W output, no time limit. The OM4000A can control a switch of up to ten antennas and select up to ten filters. QSK ready. 2 x FU-728F tetrodes.
> https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.arraysolutions.com%2F&data=05%7C01%7C%7Cd3b70bfc5414416e0b7408da55752cac%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637916259046324347%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=i%2F7gpwdUtEKblJzNUSb2VpW8w1Y3RYFLbW50Slhr0lo%3D&reserved=0
>
> ________________________________
> From: Amps <amps-bounces at contesting.com> on behalf of ve3rwj at winsystem.org <ve3rwj at winsystem.org>
> Sent: Thursday, June 23, 2022 8:01 PM
> To: amps at contesting.com <amps at contesting.com>
> Subject: [Amps] 4 KW?
>
> Hmm, is this legal in North America?
>
>
>
> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fqrznow.com%2Fom4001a-om-power-amflifier-4-kw%2F&data=05%7C01%7C%7Cd3b70bfc5414416e0b7408da55752cac%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637916259046324347%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=e%2BQoOX6pqPvMVKniTqp00ktDhThiNs4n3PPAxsw%2F64I%3D&reserved=0
>
> Looks fully-featured though, and it still has those lovely glowing glass bottles inside. 😊
>
>
>
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