[Amps] HV rectifier strings - to bypass or not?

[Fuqua, Bill L]

I did not get to the point.
The tube is directly coupled to the antenna circuit. If it is not biased off you will get loads of shot noise thru the output coupling network. 
The powersupply diodes may produce some noise, but can only do so if current is flowing thru them. That noise is small compared to the shot noise produced by the tube.
Also, there are numerous, or should be,  RF filters between the power supply and the antenna or any other way RF can get out.
Make sure your power tube is biased off during transmissions.

73
Bill wa4lav

________________________________________
From: amps-bounces at contesting.com [amps-bounces at contesting.com] On Behalf Of Jim Barber [audioguy at charter.net]
Sent: Saturday, October 30, 2010 4:32 PM
To: AMPS
Subject: [Amps] HV rectifier strings - to bypass or not?

I'm getting ready to lay out the HV rectifier board for my YC156
project, and it occurs to me to wonder if anyone has ever really heard
HV rectifier "white noise" in the receiver? It would be simpler to
forget about the per-diode bypass caps and just bypass the output as it
leaves the board. The supply will be housed in a separate cabinet from
the RF deck, but connected of course with bypassed leads for HV, (SHV
connectors) 110VAC and control signals.

My current intent is to use 8 6A10 diodes per leg. The transformer is a
3KV, 2A CCS Peter Dahl and the filter is 32uF by means of two new 16uF
7500V oil-filled caps from Henry Radio via eBay.

Opinions?

Thanks,
Jim N7CXI

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