[Premium-Rx] What are these outputs on back of wj 8618B (S 1)?

[Geoff Greer]

Hi,

  I just checked the 8617B book and the XYZ outputs will be active for the 
SM option w/o DRD also.  There are some wiring changes if the receiver has 
DRD.

Geoff Greer

----- Original Message ----- 
From: "refmon" <refmon at easystreet.com>
To: <premium-rx at ml.skirrow.org>
Sent: Monday, October 23, 2006 2:47 AM
Subject: Re: [Premium-Rx] What are these outputs on back of wj 8618B (S 1)?


> Ben,
>
> The XYZ out will be dead on your rx---this is for an X-Y display with
> intensity (Z) control, which is associated with the Digitally Refreshed
> Display option
>
> SW IF Out is an IF monitor point that is after the IF filters--bandwidth
> will be that of the selected IF filter
>
> FM Mon is the discriminator output, which is always active regardless of
> demodulation mode
>
> SW Video is the DC-coupled detector output - mode is the selected
> demodulation mode - yes, demod mode selected being FM, the SW Video will 
> be
> the same--discriminator out.
>
> WB IF Output ---this is best when you use the optional module "WBO", which
> is a wideband IF processor that is agc'd to approx -30dbm.  This is 
> actually
> intended to feed to other IF-driven equipment such as direction finder, 
> aux
> demodulators and subcarrier demods, etc etc.  You can use this as your
> "tuning scope" output, as you are doing.
>
> EM is the extended memory option--consult the manual, as memory use on 
> these
> rx's is somewhat different than scanners today...suffice it say, you get
> more channels with EM.
>
> FE is frequency extension (don't confuse with FEX, which tunes to 
> 1200MHz),
> which extends to cover up to 1100MHz
>
> LFE is low frequency extension, which enables tuning down to 2MHz, if I
> recall properly.  (see HFE, below)
>
> LOC is lockout..., which is a memory item---similar to lockout on scanner,
> but significantly more involved in use
>
> SM is Signal Monitor, which is the green scope unit on the left side of 
> the
> front panel.
>
> I'm not sure, but you may also have the HFE option, unless the HFE
> functionality is included in the LFE option.  Sorry, I don't have all the
> manuals unpacked yet.
>
> You can also take a look at the Watkins Johnson Info site, originated and
> maintained by Terry O'Laughlin, a long-time list member.  Go to:
> http://watkins-johnson.terryo.org/
>
> good luck with that rx, and have fun!!
>
> John Collins
>
> ----- Original Message ----- 
> From: "Ben Mesander" <benmesander at yahoo.com>
> To: <premium-rx at ml.skirrow.org>
> Sent: Sunday, October 22, 2006 11:10 AM
> Subject: [Premium-Rx] What are these outputs on back of wj 8618B (S 1)?
>
>
>> Well, thanks to Steve, my audio output on the radio is
>> no longer so hot it explodes sound cards.
>>
>> While I had the radio out of the rack, I wondered what
>> the following outputs are:
>>
>> X, Y, Z OUT - presumably for a scope? What kind of
>> pictures does it draw?
>>
>> What are the following? (definition, dBm, frequency
>> range)
>>
>> SW IF OUT
>> FM MON
>> SW VIDEO
>> WB IF OUT <-- I have this one hooked to the direct
>> input on my SDR-14, and use it to tune around VHF/UHF
>>
>> The radio has the following options:
>> EM, FE, LFE, LOC, SM
>>
>> Regards,
>> Ben
>>
>>
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>
>
>
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