[Hallicrafters] SX-71 (Similar Problem)

[gkb]

Don't rule out a band switch problem. I had similar problem with my SX-71,
black face. Was a bad wafer on the band switch.
Regards,
Gary...WZ1M
----- Original Message ----- 
From: "Mike Everette" <radiocompass at yahoo.com>
To: "Carole White-Connor" <carolew at bellatlantic.net>
Cc: <boatanchors at mailman.qth.net>; <hallicrafters at mailman.qth.net>
Sent: Saturday, October 14, 2006 12:56 PM
Subject: Re: [Hallicrafters] SX-71 (Similar Problem)


> The SX-71 is double conversion.
>
> If the double conversion circuitry is not used on
> Bands 1 and 2, and the radio is dead above Band 2,
> then the trouble may very well be related to the
> "high" IF.  I don't have an SX-71 but have run into
> very similar problems with a Hammarlund HQ-180, which
> uses triple conversion above about 7 MHz. In that case
> it turned out to be a bad connection in the conversion
> oscillator associated with the 3035 KHz high IF.
>
> I think the SX-71 uses a high IF of either 2050 or
> 2250 KHz.
>
> The problem with the SX-42 will not be related to
> double conversion because the SX-42 does not use that
> scheme.
>
> Just a thought.
>
> 73
>
> Mike
> WA4DLF
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
> ______________________________________________________________
> Hallicrafters mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hallicrafters
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:Hallicrafters at mailman.qth.net
> ----
> List Administrator: Duane Fischer, W8DBF **for assistance**
> dfischer at usol.com
> ----
> Hallicrafters Collectors International: http://www.w9wze.org
>
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.408 / Virus Database: 268.13.4/475 - Release Date: 10/13/2006
>
>