[Premium-Rx] panadapter/sdu for harris rf-590?

[Eugene Hertz]

can anyone confirm the bandwidth of the unfiltered IF out on a harris rf-590? I looked in the manual and there is a note about 16Khz after the first conversion stage. But it says nothing about any further filtering after the second conversion down to 455.

Anyone have any info?
Eugene



>-----Original Message-----
>From: jan at skirrow.org [mailto:jan at skirrow.org]
>Sent: Tuesday, September 21, 2004 04:00 PM
>To: premium-rx at ml.skirrow.org
>Cc: ehertz at tcaf.org
>Subject: Re: [Premium-Rx] panadapter/sdu for harris rf-590?
>
>Hi Eugene .... 
> 
>A couple of things to consider. First, what bandwidth do you have to work 
>with on these 455kHz outputs? I tried using an old Hallicrafter panadaptor 
>with a classic radio that had 16kHz max BW at the second IF. This just 
>wasn't enough to work with. Second, what resolution do you need your 
>panadaptor to achieve? 
> 
>If you want to monitor even a small frequency range - say 100kHz - you'll 
>need this much BW into your panadaptor. If you want to be able to 
>distinguish signals that are very close together, you'll need resolution 
>better than the minimum separation. 
> 
>Our founder, Doc Bailey, has a nice Icom 756PRO with the built-in real time 
>spectrum display. It really is a nice addition - and really shines when he 
>is using the Icom as the IF for a microwave setup where finding any signal 
>is a major challenge. 
> 
>Jan 
> 
> 
> 
>At 01:17 PM 9/21/04, Eugene Hertz wrote: 
>>Hello all, my harris RF-590 has two IF outputs (filtered and unfiltered) 
>>both at 455Khz. I would imagine that the unfiltered could be used for a 
>>panapator/spectrum display unit. Does anyone know if harris ever made 
>>such a thing (455Hkz) that "went" with the 590? Or perhaps made a generic 
>>panadapter for other lines of radios? 
>> 
>>Or does anyone have a "favorite" panadaptor? I have a heath SB620 which I 
>>have yet to resurrect, but wanted to know about others. I know the WJ 
>>folks are just plain spoiled when it comes this this stuff! 
> 
>