Electolytics in signal path??

[bitrex]

On 8/12/19 9:22 PM, Phil Hobbs wrote:

it's a nice unit that I estimate the chances of CD successfully fixing
up at 'bout 0%

Bet they taught you all about HP stuff in art school.

Cheers

Phil Hobbs

Yeah, I was too busy fucking the guys on the engineering track's sisters
for much book-learning at the time.

 

[Gerhard Hoffmann]

Am 14.08.19 um 02:42 schrieb John Miles, KE5FX:

The 8566 is nothing special in the phase-noise department, but they got
the UI and the display right, and it is *stable*. I have several other
SAs around here, some much newer and much more powerful than my 8566B.
The 8566B will only be carried out of here after I am, while the others
come and go.

I'll keep my W&G SNA-33. 20Hz to 26.5 GHz with 1 Hz filter BW.
And a fundamental mixer. Not those noise steps from range to range
like these old HPs when they switch to the next harmonic.

Gerhard

 

[bitrex]

On 8/13/19 8:55 PM, bitrex wrote:

On 8/12/19 9:22 PM, Phil Hobbs wrote:

it's a nice unit that I estimate the chances of CD successfully
fixing up at 'bout 0%

Bet they taught you all about HP stuff in art school.

Cheers

Phil Hobbs


Yeah, I was too busy fucking the guys on the engineering track's sisters
for much book-learning at the time.

Should that be "sisters of the guy's on the engineering track"? well I
wasn't an English major, either. /shrug

 

[bitrex]

On 8/13/19 1:29 PM, Cursitor Doom wrote:

On Mon, 12 Aug 2019 21:22:19 -0400, Phil Hobbs wrote:

On 8/12/19 3:40 PM, bitrex wrote:

it's a nice unit that I estimate the chances of CD successfully fixing
up at 'bout 0%

Bet they taught you all about HP stuff in art school.

LOL! You got that right, Phil.

Actually, I'm a pretty darn good troubleshooter and have fixed a lot of
high-end gear in the past, although admittedly this one's probably the
most complex unit I've undertaken to date. Given an oscilloscope and a
schematic I can most times succeed in finding and fixing these faults.
I'm way better at fault-finding than I am at designing, anyway.
You have one of these IIRC, don't you, Phil? Have you ever had the "YTO
unlocked" error? It refers to a YIG-tuned oscillator which I've never
heard of before. I'm hopeful I can rectify the fault without having to
spend time studying the minutiae of YIG-tuned oscillators first!!

Your great uncle Cursitor Bradford Beauregard Doom the 3rd prolly worked
on it already that's why there's a 2.2 uF electrolytic where it
shouldn't be and it still don't work.

 

Cursitor Doom <curd@notformail.com> wrote in news:qiva62$ks$3@dont-
email.me:

The tricky bit is identifying exactly *which*
small, cheap component has failed.

Yeah... We call that troubleshooting.

Sometimes it is a large, expensive component.

 

Cursitor Doom <curd@notformail.com> wrote in news:qivhd4$ks$5@dont-
email.me:

I've never understood how anyone could think an SDR-based instrument
could equal an analogue device for spectral purity/low phase noise.

I am sure the boys at ViaSat have figured out just about all there is
to know about SDR root hardware. Our mil boys enjoy about ten
different SDR generated (and received) waveforms. Haven't seen many
complaints.

Link16 has been around for a long time. So have many of the others.

 

bitrex <user@example.net> wrote in news:m_I4F.255949$KQ6.240282
@fx47.iad:

> Yeah, I was too busy fucking the guys on the engineering track

Ooops!

 

bitrex <user@example.net> wrote in news:UhK4F.63951$472.53669
@fx12.iad:

On 8/13/19 9:25 PM, DecadentLinuxUserNumeroUno@decadence.org wrote:
bitrex <user@example.net> wrote in news:m_I4F.255949$KQ6.240282
@fx47.iad:

Yeah, I was too busy fucking the guys on the engineering track

Ooops!


Cool edit bruh

I quoted your exact text. I edited nothing.

My "quoted text" ended 'abruptly'. Hehehehee...

 

[bitrex]

On 8/13/19 9:25 PM, DecadentLinuxUserNumeroUno@decadence.org wrote:

bitrex <user@example.net> wrote in news:m_I4F.255949$KQ6.240282
@fx47.iad:

Yeah, I was too busy fucking the guys on the engineering track

Ooops!

Cool edit bruh

 

[bitrex]

On 8/13/19 10:30 PM, DecadentLinuxUserNumeroUno@decadence.org wrote:

bitrex <user@example.net> wrote in news:UhK4F.63951$472.53669
@fx12.iad:

On 8/13/19 9:25 PM, DecadentLinuxUserNumeroUno@decadence.org wrote:
bitrex <user@example.net> wrote in news:m_I4F.255949$KQ6.240282
@fx47.iad:

Yeah, I was too busy fucking the guys on the engineering track

Ooops!


Cool edit bruh


I quoted your exact text. I edited nothing.

My "quoted text" ended 'abruptly'. Hehehehee...

Looks like you've got a solid future as a right-wing SC justice or
Evangelical holy-roller or both, depending. The penalty will also be
death for asserting pi is anything other than exactly 3 under Mike
Pence's Sharia West

 

[John Miles, KE5FX]

On Tuesday, August 13, 2019 at 5:54:29 PM UTC-7, Gerhard Hoffmann wrote:

I'll keep my W&G SNA-33. 20Hz to 26.5 GHz with 1 Hz filter BW.
And a fundamental mixer. Not those noise steps from range to range
like these old HPs when they switch to the next harmonic.

Sounds like an extremely nice box, but also very obscure, at least over
here. I wonder why they weren't more popular. Any obvious drawbacks?
Can you get schematics?

-- john, KE5FX

 

[Cursitor Doom]

On Tue, 13 Aug 2019 22:49:44 -0700, John Miles, KE5FX wrote:

Sounds like an extremely nice box, but also very obscure, at least over
here. I wonder why they weren't more popular. Any obvious drawbacks?

Yeah, being very obscure! :-D




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protocols constitutes acceptance of this condition.

 

[Gerhard Hoffmann]

Am 14.08.19 um 07:49 schrieb John Miles, KE5FX:

On Tuesday, August 13, 2019 at 5:54:29 PM UTC-7, Gerhard Hoffmann wrote:
I'll keep my W&G SNA-33. 20Hz to 26.5 GHz with 1 Hz filter BW.
And a fundamental mixer. Not those noise steps from range to range
like these old HPs when they switch to the next harmonic.

Sounds like an extremely nice box, but also very obscure, at least over
here. I wonder why they weren't more popular. Any obvious drawbacks?
Can you get schematics?

-- john, KE5FX

It has some 56001 and a yig preselector and yes, it runs DOS 5 on its
embedded AM386.


<
http://ftb.ko4bb.com/manuals/94.219.6.93/Wandel_Goltermann_SNA-20_23_30_33_RF_Spectrum_Analyzer_Service_Manual_Appendix_schematics.pdf
>

The drawback was the price.

cheers, Gerhard

 

[Phil Hobbs]

On 8/13/19 8:54 PM, Gerhard Hoffmann wrote:

Am 14.08.19 um 02:42 schrieb John Miles, KE5FX:

The 8566 is nothing special in the phase-noise department, but they got
the UI and the display right, and it is *stable*.  I have several other
SAs around here, some much newer and much more powerful than my 8566B.
The 8566B will only be carried out of here after I am, while the others
come and go.

I'll keep my W&G SNA-33.  20Hz to 26.5 GHz with 1 Hz filter BW.
And a fundamental mixer. Not those noise steps from range to range
like these old HPs when they switch to the next harmonic.

   Gerhard

My old HP 70000 analyzer was like that too, including the 1-Hz IF
bandwidth, but then it was a 15+ year newer design. The 8566 series is
now 40 years old. When was your W&G unit introduced?

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com