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Browning Mk 3 receiver

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narfedwards1
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Browning Mk 3 receiver

Post by narfedwards1 » Wednesday, 13 December 2017, 7:47 AM

Ever notice distortion on the Mk.III receiver.Read a post on yahoo groups tube radio collectors that suggests clipping the diodes SD1 and SD2
They are both contained in a black unit...once disabled it opens up the receive beautifully and eliminates all distortion.Give it a try..you wont be disappointed and easily reversed if you choose.I found the improvement a great asset to the already outstanding performance of this old beauty.

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narfedwards1
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Re: Browning Mk 3 receiver

Post by narfedwards1 » Monday, 25 December 2017, 8:07 AM

correction...on schematic shows SR4 and SR5 but both are in one package...near V12

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Narf!
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narfedwards1
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Re: Browning Mk 3 receiver

Post by narfedwards1 » Monday, 12 February 2018, 16:02 PM

Just clipped D205 on the Mk.IV and it made an incredible improvement on the receive...definitely recommended

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narfedwards1
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Re: Browning Mk 3 receiver

Post by narfedwards1 » Monday, 12 February 2018, 18:13 PM

In reality those two diodes are acting as a clipper especially on strong signals and they introduce a high level of distortion in the receive audio.Dont really understand why they are there and with them out of circuit the result is quite impressive ...cant imagine leaving them tied in

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Narf!
XM42-9578
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"The Shwaaaa" Unit 421

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Re: Browning Mk 3 receiver

Post by 295 antenna » Monday, 12 February 2018, 19:14 PM

narfedwards1 wrote:
Monday, 12 February 2018, 16:02 PM
Just clipped D205 on the Mk.IV and it made an incredible improvement on the receive...definitely recommended

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you wouldnt have a picture or a diagram where d205 is ?


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Re: Browning Mk 3 receiver

Post by 295 antenna » Monday, 12 February 2018, 21:19 PM

ive looked over the schematics and i only see d204


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narfedwards1
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Re: Browning Mk 3 receiver

Post by narfedwards1 » Tuesday, 13 February 2018, 17:31 PM

https://groups.yahoo.com/neo/groups/tub ... sages/9424
Here is the link where I learned of this mod...really only applies to SSB receive


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