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"pfjw@aol.com" <peterwieck33@gmail.com>: Jan 15 12:36PM -0800 Siemens Symphony Magnetom 1.5T MRI 2004   Medrad Spectris Solaris Injector 3004213 11384   Series 23449 Software NUMARIS/4 Version syngo MR A40 DHHS Software COEM VD31H Syngo Vx91C SL02P08 N4_VA40A_LATEST_20130302 N4 SECURITY_UPDATE_0024_20140505 N4_VA40A_FEATURE_20130302_SP01_F10 N4_VA40A_FEATURE_201130302_OU2_F2 MR_MR018-17S_N4SeU0028 MR_MR023-17-R_N4SecU0029 Cryo 44% Coldhead     And:   Siemens Primus LINAC 2002 3413   Low Photon Energy MV 6 Dose Rate MU/min 50&300 High Photon Energy MV 10,15,23 Dose Rate MU/min 10,15,23 Electron Energy MeV 6 to 21 Electron Dose Rate MU/min 300 or 900 Available with MLC Optional Minimum Room Dimensions: Depth 19' Width 18' Height 9'6" Power Requirements KVA 9'6" Water Requirements Gal/min 9'6"     The MRI is fully operational and with all supporting equipment. The LINAC is not operational and would either be for parts or for full refurbishment.   The MRI Machine is on the third floor of a medical office building in Center City Philadelphia, Pennsylvania, USA and would have to be craned out through an outside wall. All costs for same would be by the taker, who (which) would have to be fully insured, licensed in Philadelphia, and bear all costs of disassembly, removal, and restoration of building integrity. There would be no direct costs for the machine or supporting equipment.   The LINAC machine is on the first floor of the same building, and subject to the same requirements for removal - whatever means and methods and restoration on the remover.   Please e-mail me directly. Either we get this done before 1/31/2020, or the machines both go out as scrap. Not kidding. Even a little bit.   Peter Wieck Melrose Park, PA

Michael Terrell <terrell.michael.a@gmail.com>: Jan 16 07:43AM -0800 > The MRI Machine is on the third floor of a medical office building in Center City Philadelphia, Pennsylvania, USA and would have to be craned out through an outside wall. All costs for same would be by the taker, who (which) would have to be fully insured, licensed in Philadelphia, and bear all costs of disassembly, removal, and restoration of building integrity. There would be no direct costs for the machine or supporting equipment.   > The LINAC machine is on the first floor of the same building, and subject to the same requirements for removal - whatever means and methods and restoration on the remover.   > Please e-mail me directly. Either we get this done before 1/31/2020, or the machines both go out as scrap. Not kidding. Even a little bit.   None of the used equipment companies want them? MRI machines have very nice Dc to several MHz low distortion power amplifiers. I've heard of some in the 15 KW range. Some were modified Crown amplifiers.   Since this is older, does it have any of the Tektronix video displays> I've seen some medical equipment that used the half rack X-Y monitors that fit the rack mounts for Waveform Monitors and Vector scopes. The old Waterman hospital in Eustis Florida had sold the equipment to a dealer, then left it outside in the rain for two weeks. It had a nice pair of Tek 620 X-Y monitors. They would have made great displays for Curve Tracers.

Jeff Liebermann <jeffl@cruzio.com>: Jan 15 09:05PM -0800 On Tue, 14 Jan 2020 17:42:04 +0000, Cursitor Doom >centre-frequency line. This noise, unlike the 'comb' is constantly >flickering and random.   >https://yandex.com/collections/card/5e1dfafd874e97d27c81ef46/   Sorry for the late reply, but I had to waste the last few days dealing with the California Dept of Motor Vehicles to renew my drivers license and obtain a Real-ID endorsement. I passed both but am still recovering and might need a few more days to calm down.   Interesting spectrum analyzer display and description. The most interesting part is how you managed to produce the photo, without bothering to mention the: 1. Network analyzer test Frequency 2. SA (spectrum analyzer) horizontal MHz/div. 3. SA vertical full scale, dBm per division, and dBm full scale. 4. Whether you were misusing a scope probe (again) or feeding it with 50 ohms. Also, any attenuators or couplers in the RF path. 5. Did you remember to turn of the 1, 10, 50Mhz markers on the HP8754A? 6. Any other numbers which might be useful, especially those you previously mention, but which I'm too lazy to dig through your old postings to find.   Had you supplied some numbers, I would have dived into the HP8754A network analyzer service manual, and determined the frequencies of the two oscillators (3.6 - 4.3GHz minus 3.6 - 3.0GHz) used to produce your unspecified output frequency. I would then compare the possible intermodulation mixes of these two frequencies, with the mess on your spectrum analyzer screen, and see if any of the spurs are the result of oscillator feedthrough, intermod mixing, or overdriving the spectrum analyzer and creating the spurs in the SA. However, since your photos were not accompanied by any numbers, I can't do this for you. Incidentally, you might want to ask in one of the HP test equipment forums for what a working HP8754A RF output looks like on a spectrum analyzer. I would not be surprised if the mess on your screen is quite normal.   Incidentally, if you download and read the HP8754A service manual, you'll find a large number of Performance Tests. Performed properly in the manner specified, you should get a better idea if your network analyzer is functioning as expected.   Also, this is your second warning about providing insufficient information and numbers. Provide numbers with your problems or prepare thyself for the wrath of the radio gods. The recent failure of your Tek 2645A scope was a poorly aimed warning shot (I was aiming for your Tek 2232A scope) and a hint of things to come.     -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Cursitor Doom <curd@notformail.com>: Jan 16 10:14AM On Wed, 15 Jan 2020 21:05:43 -0800, Jeff Liebermann <jeffl@cruzio.com> wrote:   >with the California Dept of Motor Vehicles to renew my drivers license >and obtain a Real-ID endorsement. I passed both but am still >recovering and might need a few more days to calm down.   My sympathies. I've heard about the queues in those places and they must be pretty bad indeed to make the international news! Is it true they recruit retired-disabled ex-NYC taxi drivers for their counter staff?   [snip missing numbers]   Yeah, I know. I'm sorry but you know about as much as I do! If I'd zoomed out on those shots there's a bezel around the outside of the screen on that SA which is *supposed* to show all that info. Unfortunately, it's bust. This is a partly working unit I picked up at a ham rally and am in the process of re-commissioning. Unfortunately, my No.1 RF SA (the 8566B) is currently out of action with a recent "YIG oscillator unlocked" error message, so there's nothing to fall back on. It's kind of tough to do stuff with all this busted equipment. Even the equipment I picked up in prime working condition is letting me down lately. All I *can* say about those photos is the SA is set on the 0.01-1.8Ghz display range, I'm sniffing the VNA output with a few turns of wire rather than a direct connection, the 40dB attenuation is set (and seems to work!) and the VNA output frequencies in each picture are the filenames for each of those pictures. So the situation is "not ideal" but you have to work with what you've got, I guess. --   No deal? No problem! :-D

Cursitor Doom <curd@notformail.com>: Jan 16 10:42AM On Wed, 15 Jan 2020 21:05:43 -0800, Jeff Liebermann <jeffl@cruzio.com> wrote:     I just noticed some points you mentioned I forgot to cover in my earlier post...   >1. Network analyzer test Frequency   Shown in picture title for example 10Mhz.jpg means the VNA was set to 10Mhz.   >2. SA (spectrum analyzer) horizontal MHz/div.   Full band mode so ~180Mhz/div.   >3. SA vertical full scale, dBm per division, and dBm full scale.   No reliable info.   >4. Whether you were misusing a scope probe (again) or feeding it > with 50 ohms.   Neither - sniffing with few turns of wire.   > Also, any attenuators or couplers in the RF path.   Nope. Just the 40dB attenuation setting of the SA.   >5. Did you remember to turn of the 1, 10, 50Mhz markers on the >HP8754A?   Yep, no markers.   >equipment forums for what a working HP8754A RF output looks like on a >spectrum analyzer. I would not be surprised if the mess on your >screen is quite normal.   Good suggestion.   >you'll find a large number of Performance Tests. Performed properly >in the manner specified, you should get a better idea if your network >analyzer is functioning as expected.   I do actually have the original physical hard-copy of the service manual and was working my way through those performance tests when I got side-tracked by something else whilst waiting for the required phase-matched power splitter and some new terminations to arrive. I really MUST get back to that as they have since turned up in the post.   I also need to try out some other poster's suggestion re sweeping the VCO ramp with DC from batteries, too. So I have plenty to get on with whilst you digest my replies, Jeff. :-/ --   No deal? No problem! :-D

Cursitor Doom <curd@notformail.com>: Jan 16 12:52PM The VNA was putting out 10dBm in all those photos, btw. I'm reasonably confident that much at least is 'pretty accurate.'   --   No deal? No problem! :-D

Bo-Lennart <bo-lennart.karlsson@telia.com>: Jan 15 01:16PM -0800 Hi... I have an old KYORITSU K-200 FET VOM. I would like to align it the proper way. I have found the DC-cal and AC-cal. And those calibration isn't that hard to understand. But there is a cal called BIAS (VR 4). Is there someone who knows how to set the BIAS. I have set the BIAS-cal in mid position, and the instrument seems to work allright.   Best regards from SWEDEN Bo-Lennart Karlsson

Trevor Wilson <trevor@rageaudio.com.au>: Jan 16 09:42AM +1100 On 16/01/2020 8:16 am, Bo-Lennart wrote: > I have an old KYORITSU K-200 FET VOM. I would like to align it the proper way. I have found the DC-cal and AC-cal. And those calibration isn't that hard to understand. But there is a cal called BIAS (VR 4). Is there someone who knows how to set the BIAS. I have set the BIAS-cal in mid position, and the instrument seems to work allright.   > Best regards from SWEDEN > Bo-Lennart Karlsson   **This might help:   https://elektrotanya.com/kyoritsu_fet-vom_k-200_multimeter.pdf/download.html   I have not tried to download it.   -- Trevor Wilson www.rageaudio.com.au

Bo-Lennart <bo-lennart.karlsson@telia.com>: Jan 16 02:48AM -0800 Den onsdag 15 januari 2020 kl. 22:16:54 UTC+1 skrev Bo-Lennart:

Bo-Lennart <bo-lennart.karlsson@telia.com>: Jan 16 03:08AM -0800 Den onsdag 15 januari 2020 kl. 22:16:54 UTC+1 skrev Bo-Lennart: > I have an old KYORITSU K-200 FET VOM. I would like to align it the proper way. I have found the DC-cal and AC-cal. And those calibration isn't that hard to understand. But there is a cal called BIAS (VR 4). Is there someone who knows how to set the BIAS. I have set the BIAS-cal in mid position, and the instrument seems to work allright.   > Best regards from SWEDEN > Bo-Lennart Karlsson   Hi Trevor....thank's for Your reply. But I have already downloaded that operating manual. But it dosen't say anything about how to align the instrument. What I mean is: At what range should I adjust the DC-cal and AC-cal? And there is a variabel C in the voltage-divider. At what frequency should I adjust that? 1 kHz or 10 kHz???. And finally, how should I adjust the BIAS-cal. I understand that BIAS-cal is for to make the 2 FET more matched. The instrument works pretty well. The linearity is pretty good. But I would like to see if I can get it better. Thanks anyway. I keep looking around to see if I can get any adjustment procedure.   // Bo-Lennart Karlsson Falun, SWEDEN

Bo-Lennart <bo-lennart.karlsson@telia.com>: Jan 16 03:33AM -0800 Den onsdag 15 januari 2020 kl. 22:16:54 UTC+1 skrev Bo-Lennart: > I have an old KYORITSU K-200 FET VOM. I would like to align it the proper way. I have found the DC-cal and AC-cal. And those calibration isn't that hard to understand. But there is a cal called BIAS (VR 4). Is there someone who knows how to set the BIAS. I have set the BIAS-cal in mid position, and the instrument seems to work allright.   > Best regards from SWEDEN > Bo-Lennart Karlsson   I searched a forum, that say that BK Precision had a licens to make a similar instrument like K-200. BK Precision called it "BK Precision Solid State 179 FET-VOM". Is there someone who has a Service Manual including a adjustment procedure? I would appriciate if You couls share it with me.   Best regards Bo-Lennart Karlsson Falun, SWEDEN

Michael Terrell <terrell.michael.a@gmail.com>: Jan 15 05:21PM -0800 > A service man did NOT come.   > Verizon is still working on the problem. I was told by a tech support > person that they are working on the cable (not outside my house).   Last mile. between your DEMARC and their SLIC where up to 16 lines are multiplexed to a single pair o the C. O. More lines, if it s Fiber Optic to the C.O, They work from the SLIc towards your house, looking for problems.

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