[Hallicrafters] re: urm-25d

[George KB2Z]

The manual available on BAMA gives instructions on how to use the included 
10:1 attenuator , CN-224 ( if you have it ) and a receiver to check the 
attenuation on the X-multi generator switch. You use a range up with the 
10:1 attenuator, check the output voltage from the rx. Lower a range 
without the 10:1 attenuator and compare output voltages.
George KB2Z


At 01:56 PM 3/18/04 -0500, you wrote:

>Hi Roy
>It was me who asked the question.
>Lots of advice and lots to think about.
>I have checked the attenuator both opened and closed.
>First indication of failure was a reading of 3 megs at pin 1 on v104, it
>should be 550r.
>Removal of the atten revealed an over heated r141(55r), measured about 3 megs.
>According to the manual there should be .1volt output with the atten on x10k,
>I measured
>170 mv with my dmm or .17volt. Thats as far as I've gotten.
>I was thinking of applying a variable dc voltage high enough for the dmm to
>read the output
>and then calculate the attenuation.
>Does this sound reasonable or just wishful thinking.?
>
>
>regards and best
>Jim ka2zuu
>
>
>--- StripMime Report -- processed MIME parts ---
>multipart/alternative
>   text/plain (text body -- kept)
>   text/html
>The reason this message is shown is because the post was in HTML
>or had an attachment.  Attachments are not allowed.  To learn how
>to post in Plain-Text go to: http://www.expita.com/nomime.html  ---
>_______________________________________________
>List Administrator: Duane Fischer, W8DBF **for assistance**
>dfischer at usol.com
>----
>Hallicrafters Collectors International: http://www.w9wze.org
>----
>http://mailman.qth.net/mailman/listinfo/hallicrafters
>
>
>---
>Incoming mail is certified Virus Free.
>Checked by AVG anti-virus system (http://www.grisoft.com).
>Version: 6.0.614 / Virus Database: 393 - Release Date: 3/5/04


--- StripMime Report -- processed MIME parts ---
multipart/mixed
  text/plain (text body -- kept)
The reason this message is shown is because the post was in HTML
or had an attachment.  Attachments are not allowed.  To learn how
to post in Plain-Text go to: http://www.expita.com/nomime.html  ---