[Elecraft] Problem with Elecraft's built in 2 meter

Tom Azlin N4ZPT tom at n4zpt.org
Thu May 3 13:44:05 EDT 2012


Thanks Julie,

Strong and weak are then their audio levels?  Given that you are 
listening to the repeater output the RF carrier level should be the same 
for some that are fine and some that are clipping. Are all the ones 
clipping on the same repeater?  Perhaps then strong means loud means 
higher deviation but not so as to clip the repeater receiver since I 
presume the same talkers are fine on your 706. My 706 had pretty wide FM 
filters, something like 20-30 KHz wide. ( we used to have a local 
repeater that clipped with excessive input deviation.)

Using your panadapter are the ones that clip clearly wider than 13 KHz? 
Or offset?  Perhaps the repeaters being used by those talkers are older 
ones with wide filters that allow wide deviation input?

So is a puzzle. Strong and weak alike are fine on my K3 with internal 
transverter but my local repeaters are all on 15KHz centers and do not 
seem to be much wider than 13-15KHz on my P3 ( or my LP-PAN or SDR-I/Q ).

I am wondering then if you have a bad filter?

73, tom n4zpt

On 5/3/2012 10:31 AM, Julie Royster wrote:
> Larry K4MWE and I are hearing lots of distortion (clipping probably) on the
> K144XV tuned to local repeaters for anyone with strong signals.  Weak
> stations are OK.  Dale and Howard have made numerous suggestions but the
> problem appears to be that the FM filter is too narrow to allow some
> real-world repeaters to be received well.  In contrast, the same repeaters
> sound just fine on our old Icom 706.  We had hoped to be able to use the K3
> for all bands.
>
> Has anyone else had this problem?
>
> Would the external tranverter be any different or does it use the very same
> filter?
>
> 73, Julie KT4JR, wife of Larry K4MWE
>
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