Re: Boonton 250 RX Meter question
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I have the HP version after they took over Boonton.? Identical instrument.? Fortunately I collected mine in person so it suffered no trauma.? It is midnight in the UK, but I¡¯ll check votages on each range tomorrow with a scope. ? Craig ?
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From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...]
Sent: 17 February 2016 23:52
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] Boonton 250 RX Meter question?
??? I posted this to the Boonton group but I am not sure anyone follows it any more.? I want to check the tuning of the 100Khz IF. I can find nothing in the handbooks or other literature about tuning it.? I suspect its broadbanded by either stagger tuning or perhaps overcoupling. No clues.?
??? My RX meter took a header. Fortunately it fell with some cushioning and is not destroyed but the sensitivity is way down.? I have not yet tested the tubes.? I confirmed both oscillators are running but don't know the expected voltage at the connectors.? However, both voltages are the same as measured with an -hp- 410-B.? I have to check the mixer tube and IF tubes.? I hope no damage was done to anything really hard to obtain.
-- Richard Knoppow dickburk@... WB6KBL
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