Re: HP-608A Repair
A DC measurement across the output connector should show infinity, which is a good sign, as it shows that neither the 2 caps. nor the coax-cable are shorted. The caps. are in series with the pick-up
By
Merchison Burke
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#48383
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Re: HP-608A Repair
This is a common failure when someone using the 608 to test a transceiver accidentally transmits into the 608. Use of the HP-11509A Fuseholder will prevent such failures.
Jeremy
N6WFO
By
Jeremy Nichols <jeremy@...>
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#48382
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Re: HP-608A Repair
/snip/
I was contacted by one of the readers of this thread who pointed me to a
pdf manual
By
doug
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#48381
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Re: HP 3456a was Re: HP 3478A general questions
I have to say this response has really given me the most food for thought. It provided exact details about the models and the pro's and con's of each. It also made me realize something important.
By
Jeff Machesky
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#48380
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Rack Mounting parts and pieces
Hello All,
I'm welding up a 19" Rack assembly to span an 8' bench so I can mount the gear up off the table and I'm looking for the screw on rack ears, the plastic spacers used to mount a couple of
By
mikenearlibertymo
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#48379
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Re: HP-608A Repair
It's really very simple. The center conductor of the connector goes through a 53 ohm resistor to one side of the pickup coil, the other side of the pickup coil goes to the sleeve. The center
By
MAX
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#48378
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Re: HP 3456a was Re: HP 3478A general questions
Ross, I have a Tek 2465BDM sitting on top of the non vent part of the 54111D. As much as I would love to, it sounds like I shouldn't put a 3456A under all of that. The vents on top of the 54111D stop
By
Jeff Machesky
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#48377
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Re: HP 3456a was Re: HP 3478A general questions
Hi,
I have 2 HP3456A and I really like them.
The HP3456A is a shallow chassis. The HP54111 is about 4 inches longer (part
of that is the rear feet).
I have stacked alot of weight ontop of mine
By
si_emi_01
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#48376
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Re: HP 3456a was Re: HP 3478A general questions
Wow, thanks for all the info. This will help me make up my mind as to the direction I go. The boss lady has said no purchases until after x-mas. So I'm doing my research while I wait. Think I can put
By
Jeff Machesky
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#48375
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Re: HP Oldies.
All issues, 1 through 37, of "The Notebook" are archived here:
http://www.hparchive.com/Boonton.htm
73
Glenn
WB4UIV
By
Glenn Little
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#48374
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Re: HP 5335A - Need some parts. -followup
Ok, the 5335A is now working. One of the group members kindly came up with the needed cables and that led me to the original problem with the unit. A bad input fet, 1855-0300, Q5. The best I could
By
tmillermdems <tmiller11147@...>
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#48373
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Re: HP Oldies.
Hi All
I think I can help answer this:
At a hamfest last year, I picked up a complete collection of the Boonton Radio Corp publication " The Notebook". This was a periodic publication by Boonton
By
johnsorj666 <johnsorj@...>
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#48372
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Re: 70902A spectrum analyzer IF module RESOLUTION BANDWIDTH problems
Yes, I know, thank you. In fac, there are yellow stickers warning about it on the covers.
I went ahead anyway, I'd rather have them a bit off than the others unusable at all. No free lunch, I
By
Roberto Barrios
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#48371
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Re: 70902A spectrum analyzer IF module RESOLUTION BANDWIDTH problems
Thanks Ed, I will take a look at those control signals and see what we find.
Roberto EB4EQA
By
Roberto Barrios
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#48370
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HP 8551 Spectrum Analyzer FS or trade?
Hello all,
I have an HP 8551 spectrum analyzer I would like to offer for sale or trade. It works reasonably well, as I describe in more detail below, but I am starting to upgrade my home shop with
By
Daniel Koller
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#48369
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Re: HP 3456a was Re: HP 3478A general questions
Where can you buy one of these for $50?
Bob
By
Bob Albert <bob91343@...>
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#48368
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HP 3456a was Re: HP 3478A general questions
The 3456a was the most accurate in the HP fleet when introduced in 1981. The model line was 345x, so in its heritage was the 3455, 3457, and finally the ersatz standard DMM today, introduced in
By
marvgozum <mxg003@...>
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#48367
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Re: 70902A spectrum analyzer IF module RESOLUTION BANDWIDTH problems
If you open the castings of the 70902A, the filter shape of the 3 or 4?narrowest ist lost. Aligning the filters can only be done by the dedicated software.
________________________________
To:
By
jfphp
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#48366
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(No subject)
http://aubreyloganterry.com/images/qj35990x.php
By
STEVE REEVES <steve_reeves@...>
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#48365
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Re: 3456A Voltmeter
Agreed, winter here, humidity < 20% and insane static levels. A 3456A
can read multiple volts on open terminals around here.
Short the terminals with a short section of small (say 28ga)
By
Christopher Brown <cbrown@...>
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#48364
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