[Moon] Best IF for 23 cm transverter

dfaessler dfaessler at bluewin.ch
Thu Jul 26 11:33:48 CEST 2018


..its not stupid.Some SDRs like 28 MHz
73 DominiqueHB9CW


Von meinem Samsung Galaxy Smartphone gesendet.
-------- Ursprüngliche Nachricht --------Von: Don Hawbaker via Moon <moon at moonbounce.info> Datum: 26.07.18  11:09  (GMT+01:00) An: Ton PA0TBR <pa0tbr at mubo.nl>, moon at moonbounce.info Betreff: Re: [Moon] Best IF for 23 cm transverter 



	
		
		
	
		Why do you want to use 28 MHz?  As you say, many suppliers use 144, so I do not see any advantages in using 28.
		
		

		
	




On Thu, Jul 26, 2018 at 3:49 AM -0400, "Ton PA0TBR via Moon" <moon at moonbounce.info> wrote:










I want to convert 1296 MHz to/from 28 MHz (or higher but less than 54 MHz).
I see 2 options:

1) Kuhne has transverters that will convert directly to/from 28 MHz but I
assume that I need interdigital filters to stop the 1268 MHz mixer
frequency and 1240 MHz image frequency.

2) Many suppliers mix to/from 144 MHz, which implies that I need a 2nd
transverter for 144 to/from 28 MHz.

Which option is technically preferred?

73,
Ton pa0tbr
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