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The perfect whackertard CB radio!!


I bet that radio is built like a sherman tank, looks like a neat old school radio. Don't forget back in the day everyone and their brother made a cb radio. Sears, Wards, JC Penny, Kraco, Sparkomatic, K40, Motorola, Teaberry, Royce just to name afew. Some look pretty funny.
 
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What is the IF gain function on this radio?

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" ...... There is a feature on the radio that I have not seen on another CB; an IF gain. It also has the standard RF gain. Between these two features the back ground noise can be eliminated. The noise blanker is also variable. ...... "

about 2/3s down the page ....

Motorola CM-540 Info 1
 
I'd like to have it just because it says "Electroscan" on the front. :D

Looks like a cool radio!

73,
RT307
 
" ...... There is a feature on the radio that I have not seen on another CB; an IF gain. It also has the standard RF gain. Between these two features the back ground noise can be eliminated. The noise blanker is also variable. ...... "

about 2/3s down the page ....

Motorola CM-540 Info 1

I read that. Let me rephrase the question.

What is IF, and how does gaining some eliminate background noise?

Sent from my DROIDX using Tapatalk 2
 
I read that. Let me rephrase the question.

What is IF, and how does gaining some eliminate background noise?

Sent from my DROIDX using Tapatalk 2

I found this:
IF Amplifier Tutoral - Radio Terminology Bibliography - Electronics Hobby Circuits and Tutorials - IF Amplifier

Seems to me that it's almost like a variable "filter" if you will. Maybe someone more technically gifted can explain it better than the article.

I know that I often turn down my RF gain and turn the volume up and am able to receive stations that were stuck in the noise level with the RF gain wide open.

73,
RT307
 

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  • @ 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.