[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: RFI identification



On Wed, 23 Jan 2008 14:23:49 -0600, Wayne Estes wrote:

>Computers are also extremely noisy!  When operating HF I never use a
>computer, every one I have ever had or used, adds at least 10 DB to the
>noise floor.

I use an old IBM PS/2 Server 95 (microchannel) computer w/IBM 6091-19i
workstation monitor for logging. It won't run modern games, but it's the most
RFI-tight computer I've ever seen.

An AM "Walkman" type of portable radio can be handy for DFing RFI. The
loopstick antenna has very sharp nulls. "Calibrate" it using a signal from an
AM broadcast station with known (local) location.


73

-Jim

--
Ham Radio NU0C
TR7/RV7, TR6/RV6, T4XC/R4C, L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time!

HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/

_______________________________________________
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb



AMSAT Top AMSAT Home