Toggle sidebar Toggle sidebar
  • You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.

President Washington (UPD 858) alignment question

Lkaskel

Lkaskel

Well-Known Member
I Support WorldwideDX.com!
Aug 4, 2017
541
439
73
61
Hey Everyone,
So I am aligning a 1st edition Washington and using the Sams manual for it. I do realize that there are many errors in these manuals but sometimes it makes me question what they actually meant. While aligning the receive they instruct you to adjust the RF gain to .5 "volts" audio and the for the AM balance the ask for .5 "watts" audio. Is it volts or watts?

To add to this question, what do you use to measure the audio while doing alignments? I have been using my Sinnader 3 and aligning for volts/sinad. I am unsure how I would align for watts.

Thanks as always!!!
 

This really only matters to hold the speaker drive level below the distortion level.

The exact audio voltage to obtain 0.5 Watts into 8 ohms is 0.707 Volts RMS.

Not a critical difference. So long as the receive audio doesn't get objectionably louder or weaker when changing modes, the AM balance is set okay.

73
 
  • Like
Reactions: Lkaskel

dxChat
Help Users
  • No one is chatting at the moment.
  • @ BJ radionut:
    +1
  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
  • @ AudioShockwav:
    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
  • @ heartbreaker3473:
    Okay, sorry, will put in a forum
  • @ heartbreaker3473:
    I put it in the general disscution help area and started a new thread. Thank you for letting me know.


      Top Bottom