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 Powering A 23cm Masthead Pre-amp. 
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Post Powering A 23cm Masthead Pre-amp.
Further to my post about a bias-Tee for 23cm; how are you 23cm Operators on here powering your pre-amps?


Mon Aug 14, 2023 8:35 am
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 Powering A 23cm Masthead Pre-amp. 
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Post Re: Powering A 23cm Masthead Pre-amp.
building one of these for my 6m masthead.

http://www.ifwtech.co.uk/g3sek/dx-book/sequencer/

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Mon Aug 14, 2023 7:06 pm
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 Powering A 23cm Masthead Pre-amp. 
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Post Re: Powering A 23cm Masthead Pre-amp.
gm0gtu wrote:
Further to my post about a bias-Tee for 23cm; how are you 23cm Operators on here powering your pre-amps?

Which radio are you using? Many have built in sequencers.

Cheers

Tony

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Wed Aug 16, 2023 12:33 pm
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 Powering A 23cm Masthead Pre-amp. 
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Post Re: Powering A 23cm Masthead Pre-amp.
gw8asd wrote:
gm0gtu wrote:
Further to my post about a bias-Tee for 23cm; how are you 23cm Operators on here powering your pre-amps?

Which radio are you using? Many have built in sequencers.

Cheers

Tony


An Icom 9700 at the moment, but it only has a max. TX delay of 30mS. I've blown a few pre-amps due to insufficient TX delay. I beleive there's a good reason that the SSB Electronics sequencers have 200 mS TX delay.
I also have an SSB Products 23cm transverter. I may use that instead.
One suggestion I received is to use an SSB Electronics sequencer to power the pre-amp. via a separate coax.


Thu Aug 17, 2023 6:00 am
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