Realistic TRC-30A TX & RX Mods

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a365
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Realistic TRC-30A TX & RX Mods

Post by a365 »

Hello Goldfinger:

I would like to get your opinion on what should I replace or change in this radio to TX & RX a little bit wider or HiFi Mods for it

[/img http://www.cbtricks.com/radios/realisti ... 0a.jpg/img

[img]http://www.cbtricks.com/radios/realisti ... ch.jpg/img]


Thank for your help
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Goldfinger
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Post by Goldfinger »

Receive

Change C701 to a 1-2.2uF electrolytic or Tantalum
Change C702 to a 1-2.2uF electrolytic or Tantalum
C706 is already 4.7, prolly OK


Transmit

C707 and C710 are already big. :o
Change C709 and C714 to 47uF electrolytic
Make C713 and C717 smaller for more highs (C717 also affects receive highs)
Change C716 to a 470uF electrolytic
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a365
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Post by a365 »

Hi Goldfinger:

Thank you very much for your help,I will try these values and report how it works



Best Regards
Tony


Goldfinger wrote:Receive

Change C701 to a 1-2.2uF electrolytic or Tantalum
Change C702 to a 1-2.2uF electrolytic or Tantalum
C706 is already 4.7, prolly OK


Transmit

C707 and C710 are already big. :o
Change C709 and C714 to 47uF electrolytic
Make C713 and C717 smaller for more highs (C717 also affects receive highs)
Change C716 to a 470uF electrolytic
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Goldfinger
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Post by Goldfinger »

Looking at the schematic, I see now why the old 30A was such a bodacious radio. Already pretty wide on transmit, right from the factory. :P
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a365
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Post by a365 »

My apologies Goldfinger for my late reply to this topic

The radio has an even better TX tone after changing the caps that you recommended,RX is improved too

Once again thank you for your great help :D
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