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Re: Measuring frequency on a 50W transmitter

[email protected]
 

Most VHF/UHF frequency counters use a terminated 50 ohm input, usually rated
at about 500 mW, and in this case, the fuse will provide protection, if you
do something that you shouldn't have done. If the input is a high impedance,
the fuse probably won't help, until the input melts.

Stuart K6YAZ
Measuring frequency on a 50W transmitter

[email protected]
 

Gene, there are several way to get it done. You could transmit into an
antenna and put a second antenna on the counter, or you could get a 30 dB or
higher power attenuator and place it between the transmitter and the counter. I
have a 1 kW 40 dB attenuator that I use on my test bench, but these don't come
cheap!

A directional coupler would also attenuate the power into the counter, while
the transmitter power is going to a load. A sampling loop could also be
used, but it's hard to know how much power is getting into the counter input. A
loop can be made by getting a piece of coax that matches the counter input
connector, and making an insulated 1 inch loop on the other end, between the
center conductor and the braid.


A great safety measure is to us a fused device on the counter input, to
protect it from excessive power. You could make one with a small 1/8 amp fuse, a
small box and RF connectors. Many commercial ones are also around.



Stuart K6YAZ
(No subject)

W?QFC
 

Happy Holidays to all list members!

Again, I must call for help from this great group.
I want to use my 5302A to measure the frequency of a high power transmitter (50 watts +), so how would this be done?
Would I construct some sort of 'RF pick-up loop and if so, how would I do it?
As always, I really appreciate the help.

73,

Gene, W???QFC (OK on QRZ)
Spring Hill, Florida 34606
WEB SITE:
Looking for HP 8505A spare parts. Anyone???

 

Hi to all
I've a 8505A RF/IF Unit (lower part) that needs some repair. Basically
I'm looking for some spare parts only and not a unit to salvage for,
but if there is any available out there I will give it a try...
However, now I'm looking for a pot, for the vernier of stop frequency,
a rotary encoder for frequency adjuster, and some other spares inside
the unit that might be hard to find. These are 2 connectors of 2x25
pins for the pcb slots positions on motherboard. At least a source for
them or any related info...
Thanks in advance
Sotiris Pdmtr
Re: HP8170a Information needed

 

I've got an 8170a and the Operating and Service Manual for it. It's
the typical HP O&S manual; about 2" thick and loaded with fold-out
pages. If there is something I can look up for you, I'd be happy to
do so, and, if anyone has figured out a good way to copy those fold-
out pages, I'd be happy to scan the thing in or loan the manual out
so somebody else can do the dirty work.

My 8170 is in very good shape. The battery was bad but didn't do any
damage to the board or surrounding components; it was in the "fuzzy"
stage, but hadn't leaked acid over anything. I need to rebuild the
keyboard, which is sticky, but otherwise it's quite nice.

Except, of course, that it's missing the output pods (15452a, 15453a,
15454a, 15455a, 15456a) - and so utterly worthless. I'm sure nobody
will be surprised, but I haven't been able to find them anywhere. Any
leads (no pun intended) would be appreciated.

-Mark

On Dec 11, 2006, at 12:50 PM, tloleksy wrote:


I recently purchased the HP 8170a on Ebay by mistake. I was looking
for a generator that I could program to generate a particular signal.
My goal is to find the resident frequencies in a circuit I'm building.
On a limited budget, I've been able to make modifications to other
equipment to obtain what I was after. I've spent hour looking for
information on the HP 8170a without success. Before spending a great
deal of time or expense on service diagrams, does anyone know if what
I'm attempting to achieve with the 8170a is possible. Any information
on the 8170a would be grateful appreciated.

Thanks T.O. tloleksy@...
HP 5306a

 

I am in Need of a Operation and Service Manual for HP 5306a
Multimeter,Counter.
Also Looking for the Proper Knob for the Sample Rate control,(Grey
Plastic) and the Negative Binding Post screw end, (Grey Plastic with
Black Tip).
Any Help would be Appreciated.

Rod.
VE5RMK
Re: HP PCB's in England - free to a good home

 

HI
I live in West Sussex and I am interested in the PCB's especially for 8620 Sweeper or 5345 A counter etc
Paul Tel 01903 787324

----- Original Message -----
From: Robert Atkinson
To: hp_agilent_equipment@...
Sent: Tuesday, December 12, 2006 8:57 AM
Subject: [hp_agilent_equipment] HP PCB's in England - free to a good home


Hi,
I've recently lost some of my storage space and am looking for a home
for a small collection of PCB's from various items of HP test equipment.
They are mostly from earlier solid state equipment. Collection
preferred, I'm in Christchurch Dorset, or postage at cost.
Anyone interested please contact me off-list

Robert G8RPI
TCXOs, anyone?

 

Adding to the recent oscillator thread: Maxim has introduced +/- 1minute/year
(+/- 3.5ppm) at 0-40C integrated TCXOs (DS3234, for example). IMHO, that's
pretty darn good for something that fits in a 20 pin wide so package.

Does anyone have experience with their phase noise? As far as I'm concerned,
those are mighty good specs for such a small, non-ovenized package??

Cheers, Kuba
Re: HP PCB's in England - free to a good home

 

On Tuesday 12 December 2006 03:57, Robert Atkinson wrote:
Hi,
I've recently lost some of my storage space and am looking for a home
for a small collection of PCB's from various items of HP test equipment.
They are mostly from earlier solid state equipment. Collection
preferred, I'm in Christchurch Dorset, or postage at cost.
Anyone interested please contact me off-list
I'm looking for 00204-66538, that's the power supply assembly for an HP 204C
sine oscillator. Even a bare board would be fine. Mine is damaged from
battery leak and I'm trying to avoid rebuilding it.

Cheers, Kuba
gold plated boards

Jerry Massengale
 

Greetings,

I have a few gold plated pcb's that I have stripped bare. How many boards do you need before you consider finding a gold salvage buyer?

Jerry


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HP PCB's in England - free to a good home

 

Hi,
I've recently lost some of my storage space and am looking for a home
for a small collection of PCB's from various items of HP test equipment.
They are mostly from earlier solid state equipment. Collection
preferred, I'm in Christchurch Dorset, or postage at cost.
Anyone interested please contact me off-list

Robert G8RPI
Re: HP8170a Information needed

 

Starting on page 20 of there's
a write up on it.



Might help you understand it better.



Jack
Re: HP8170a Information needed

Jerry Massengale
 

Hi,

Same dog bit me. I searched for info any never found it. The one I had seemed to work but had extensive battery leak damage. I scraped it for parts.

Jerry

tloleksy <tloleksy@...> wrote:

I recently purchased the HP 8170a on Ebay by mistake. I was looking
for a generator that I could program to generate a particular signal.
My goal is to find the resident frequencies in a circuit I'm building.
On a limited budget, I've been able to make modifications to other
equipment to obtain what I was after. I've spent hour looking for
information on the HP 8170a without success. Before spending a great
deal of time or expense on service diagrams, does anyone know if what
I'm attempting to achieve with the 8170a is possible. Any information
on the 8170a would be grateful appreciated.

Thanks T.O. tloleksy@...






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Re: HP8170a Information needed

Dave Brown
 

The 8170A is a fairly specialised bit of kit- I doubt it can be easily converted to do what you apparently want.
But I can send you a scan of the page it appears on ex the 1984 catalog if thats any use.

DaveB, NZ

----- Original Message -----
From: "tloleksy" <tloleksy@...>
To: <hp_agilent_equipment@...>
Sent: Tuesday, December 12, 2006 7:50 AM
Subject: [hp_agilent_equipment] HP8170a Information needed



I recently purchased the HP 8170a on Ebay by mistake. I was looking
for a generator that I could program to generate a particular signal.
My goal is to find the resident frequencies in a circuit I'm building.
On a limited budget, I've been able to make modifications to other
equipment to obtain what I was after. I've spent hour looking for
information on the HP 8170a without success. Before spending a great
deal of time or expense on service diagrams, does anyone know if what
I'm attempting to achieve with the 8170a is possible. Any information
on the 8170a would be grateful appreciated.

Thanks T.O. tloleksy@...





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Re: HP8170a Information needed

 

On Monday 11 December 2006 13:50, tloleksy wrote:
I recently purchased the HP 8170a on Ebay by mistake. I was looking
for a generator that I could program to generate a particular signal.
My goal is to find the resident frequencies in a circuit I'm building.
Wouldn't a swept frequency generator work for your purpose?

Cheers, Kuba
HP8170a Information needed

 

I recently purchased the HP 8170a on Ebay by mistake. I was looking
for a generator that I could program to generate a particular signal.
My goal is to find the resident frequencies in a circuit I'm building.
On a limited budget, I've been able to make modifications to other
equipment to obtain what I was after. I've spent hour looking for
information on the HP 8170a without success. Before spending a great
deal of time or expense on service diagrams, does anyone know if what
I'm attempting to achieve with the 8170a is possible. Any information
on the 8170a would be grateful appreciated.

Thanks T.O. tloleksy@...
Re: HP1652B Logic Analyser ET AL - system disk, how to create?

 

Hello Mike,

Just a tip of the hat to your fine efforts and to Agilent for their
obvious dedication and pride in their products!

Please let it be known within your organization that I think I speak
for many users and potential users of your equipment when I say that
Agilent's continued interest in supporting equipment that is no
longer part of your curent offerings speaks volumes on the efforts
you will expend in supporting your current products.

This does not escape the notice of individuals who make buying
decisions in your market place. I, for one, will make sure that my
procurement people know that I favour Agilent's equipment for this
very reason.

A wonderful product without manufacturer support is a terrible
investment.

Thank you.


Mitch Sisak
Director
Applications Support
Lotek Wireless Inc.

--- In hp_agilent_equipment@..., "MKawasaki"
<mike_kawasaki@...> wrote:

I have a great update for everyone using the older logic
analyzers.
We've posted many of the O/S disk for these products. Here's a
quick update:

1650_51A DONE
1650_51B DONE
1652_53B NOT DONE -- should be within next week
166xA_AS DONE
166xC_CS DONE
166xCP DONE
166xE_ES_EP DONE
167xD DONE
167xG DONE
16500A DONE
16500B NOT DONE -- but I will request

On the scope side, I was able to find the 5454X O/S for
Alexander.
I've asked the division to post within the next week on
Agilent.com.

Please know that the dialogue on this discussion forum was the
catalyst for getting this workk done. Thanks for keeping the
loyalty to our "old is gold" obsolete equipment.

Mike Kawasaki
Agilent T&M eBusiness Manager


--- In hp_agilent_equipment@..., "MKawasaki"
<mike_kawasaki@> wrote:

Alexander,

This is another product that I used to work on during my days in
Colorado Springs :-)

I can't find the file within our intranet, but will send a
request
to the division support engineers. I plan to get an update
within
the next week.

Mike

--- In hp_agilent_equipment@..., Alexander Whiplash
<alexander_whiplash@> wrote:


--- MKawasaki <mike_kawasaki@> wrote:

Mike, now you're asking for something even older
than my Agilent/HP
career :-)

...

It doesn't hurt to ask.

Mike
Along the same lines, might there be a copy of the
firmware update disk image for the 54540A scope ? That
was also a 'springs box from the same era.


AW



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R: Re: HP8505A, 8501A and 8503B

 

Thanks wb0emu,
should you decide to scan it. :-)), let me know!

Ciai

Luigi


_____

Da: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...] Per conto di nj902
Inviato: domenica 10 dicembre 2006 23.05
A: hp_agilent_equipment@...
Oggetto: [hp_agilent_equipment] Re: HP8505A, 8501A and 8503B



--- In hp_agilent_equipmen <mailto:hp_agilent_equipment%40yahoogroups.com>
t@..., "verri57"
<gigi.verri@...> wrote:
"Does anyone have manuals for the Network analyser 8505A, and the
related Storage Normaliser 8501A and S-Parameters test set 8503B or
know how to find?"
------------------------------

The total documentation set for this system is quite extensive which
is to be expected for a system that cost close to $60,000.00.

I used to have one and it came with several binders that were about 3
inches thick. Just look at the pictures of the system in an old HP
catalog such as on page 454 of the 1984 edition.

Your best bet is probably to watch on ebay, however, Agilent does have
some documentation on their web site. For example:


<>
e.agilent.com/litweb/pdf/08505-90084.pdf
Re: HP8505A, 8501A and 8503B

 

--- In hp_agilent_equipment@..., "verri57"
<gigi.verri@...> wrote:
"Does anyone have manuals for the Network analyser 8505A, and the
related Storage Normaliser 8501A and S-Parameters test set 8503B or
know how to find?"
------------------------------

The total documentation set for this system is quite extensive which
is to be expected for a system that cost close to $60,000.00.

I used to have one and it came with several binders that were about 3
inches thick. Just look at the pictures of the system in an old HP
catalog such as on page 454 of the 1984 edition.

Your best bet is probably to watch on ebay, however, Agilent does have
some documentation on their web site. For example:
HP8505A, 8501A and 8503B

 

Does anyone have manuals for the Network analyser 8505A, and the
related Storage Normaliser 8501A and S-Parameters test set 8503B or
know how to find?

Thanks

Luigi
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