Vince and 47 Guests are viewing this topic.
I was trying similar strategies against squirrels couple years ago. I ended up using a cage, was working quite nicely. I reckon, in your case, you would probably need to increase the size of the cage and that would probably attract neighbours attention.* For the record, I relocated all the squirrels I caught in a park far far away.
A few days ago ...... there was a CRO on the bay that looked like I might get it cheaply. For parts only, smashed BNC, missing knob. Somehow it reminded me of the very first scopes I had seen as a young boy. And not much money lost, anyway. I actually got it for 6.50 € + 9.50 € shipping.It is a Philips PM3230, a true dual beam scope:The overall appearance of the instrument is (to me) that Philips tried to create an instrument for the professional market: The PCBs are layed out nicely, it is unclobbered, the trimmers are mostly separated from the PCBs, labeled and arranged neatly.Alas, the ordeal of shipping - although not too shabby packaged - was too much for the power switch, and, even worse, for all those plastic PCB mounts. Upon opening, a small pile of broken plastic emerged. Please note the huge diameter of the CRT where the deflection plates are connected!There also has been a repair (attempt?) that does make me uneasy. Repaired/original channel side by side:In it's current condition, I won't try to power it up (there are some broken wires from the not fastened PCB, after all). But at least it has got all tubes, so I won't complain.From what I've read, the scope seems to be rather unstable. The combination of tubes and germanium transistors wasn't a match made in heaven. One fine day, I hope I might see a trace on that screen.One more thing: That was the time when they all used those 'quick open/close' screw-like mechanisms instead of real screws. If only they ever worked!
In Other News... 'lectric s'ghetti, anyone...? mnem"Sometimes, to clean a mess you gotta make a mess." ~grand-dad
Quote from: nixiefreqq on April 07, 2020, 10:38:06 pmQuote from: bitseeker on April 07, 2020, 03:04:42 amHow's this for a disturbing TEA listing pic? It seems this seller likes livin' on the edge. does he do this on purpose? its driving my blood pressure to the point it makes me wanna' scratch my head with a banana. https://www.ebay.com/itm/HP-5350B-Microwave-Frequency-Counter-10-Hz-to-20-GHz-Powers-On-Option-001/124143559453?hash=item1ce788631d:g:jo8AAOSwGF5eG4VS What kind of person do that ? threatening to physically abuse those poor little TE just to encourage us to buy them.
Quote from: bitseeker on April 07, 2020, 03:04:42 amHow's this for a disturbing TEA listing pic? It seems this seller likes livin' on the edge. does he do this on purpose? its driving my blood pressure to the point it makes me wanna' scratch my head with a banana. https://www.ebay.com/itm/HP-5350B-Microwave-Frequency-Counter-10-Hz-to-20-GHz-Powers-On-Option-001/124143559453?hash=item1ce788631d:g:jo8AAOSwGF5eG4VS
How's this for a disturbing TEA listing pic? It seems this seller likes livin' on the edge.
What was the load current you were pulling from it? I reckon power supply units tremble with fear when they cross the threshold of your house I seem to recall some of other failures a couple of years back
I think I have discovered my spirit animal:
Quote from: mansaxel on April 07, 2020, 05:55:48 pmQuote from: beanflying on April 07, 2020, 05:08:37 amFairly good condition with all the bits but already a bit much for me and not 'needed' eBay auction: #293535499340ooooh, a 410B. I've almost got one. My 428B wants company. But that's too far away, and a bit much. A legendary bit of kit, though.Yea, Bean is our resident pimp.
Quote from: beanflying on April 07, 2020, 05:08:37 amFairly good condition with all the bits but already a bit much for me and not 'needed' eBay auction: #293535499340ooooh, a 410B. I've almost got one. My 428B wants company. But that's too far away, and a bit much. A legendary bit of kit, though.Yea, Bean is our resident pimp.
Fairly good condition with all the bits but already a bit much for me and not 'needed' eBay auction: #293535499340ooooh, a 410B. I've almost got one. My 428B wants company. But that's too far away, and a bit much. A legendary bit of kit, though.
I have 27c256 and 512, would be in need of smaller and larger ones, esp. 2001/4001 and the old 24pin buddies (25xx)If you have some to throw out, gladly.In the mean time I'll probably try to virtualize the burner software and get a parallel port up and running in my Win7 office PC ...(one less computer to f..k around with. Desk/bench space is precious ...
No I'm close to the river but not that close. We've got an alley behind the house and gardens and I'm on the end of the block. So what happens is people wander out of the alley and up the path that runs through the back of all of our gardens because it's shorter and then get to mine at the end which has an inconvenient gate. The nicer bastards open the gate and just leave. The idiots will quite happily ninja kick their way through the gate (we're on the third gate now) . I don't want to leave the gate open as it'll encourage people to use it and tramp through the garden. So this is an experiment to attempt to screw up their eyes a bit. If you shine a torch on them through the window they usually leg it so this may work. I suspect it's 2-3 usuals and the occasional wanderer.
Quote from: capt bullshot on April 07, 2020, 04:14:09 pmNice, I've got one too (followed me home in a similar way as yours). Service manual with schematics can be found on the net. It has a nice sharp trace, but one thing I really dislike: All the settings are lost on power down, the scope always starts to the same defaults (no battery inside to replace that could backup the settings). And if the LCD backlight is burned out (it's incandescent), the LCD is hard to read.Oh, wait a moment - mine has more buttons, indeed it's a PM3055. Looks quite similar otherwise.I know that behaviour of settings memory loss over powercycle from my PM3065, too.I came across a little extension that plugs in to a 9 pin SUB-D port on the back of the unit that looks like a RS232-connector (in fact I don't know if it is one).This extension contains a RAM buffered by a rechargeable battery.With this hooked on, the oscilloscope remembers its last settings and restores them after powering on.In fact it looses memory again if I don't use the oscilloscope over a longer period of time. Haven't researched that really so I can't give you a number of days.I got it from a local surplus dealer, Helmut Singer but I'm nearly confident he doesn't sell them any more because the company closed and is currently in liquidation (sells rests of their stock though).If you are interested I'll crawl behind my PM 3065 and have a look if I can find out it's name or number -perhaps I can take a look into it.
Nice, I've got one too (followed me home in a similar way as yours). Service manual with schematics can be found on the net. It has a nice sharp trace, but one thing I really dislike: All the settings are lost on power down, the scope always starts to the same defaults (no battery inside to replace that could backup the settings). And if the LCD backlight is burned out (it's incandescent), the LCD is hard to read.Oh, wait a moment - mine has more buttons, indeed it's a PM3055. Looks quite similar otherwise.
Thanks for the offer, it's not necessary since I rarely use that scope. Otherwise, a teardown would be interesting anyway. I guess there's some kind of micro involved, since I don't know of a way to connect a battery backed SRAM through a SUB-D 9 connector without one. Or maybe some shift registers? This SUB-D 9 isn't a RS232 at all AFAIR.
Quote from: capt bullshot on April 07, 2020, 04:14:09 pmQuote from: Ero-Shan on April 07, 2020, 03:56:17 pmNow look what followed me home today ...Nice, I've got one too (followed me home in a similar way as yours). Service manual with schematics can be found on the net. It has a nice sharp trace, but one thing I really dislike: All the settings are lost on power down, the scope always starts to the same defaults (no battery inside to replace that could backup the settings). And if the LCD backlight is burned out (it's incandescent), the LCD is hard to read.Oh, wait a moment - mine has more buttons, indeed it's a PM3055. Looks quite similar otherwise.I know that behaviour of settings memory loss over powercycle from my PM3065, too.I came across a little extension that plugs in to a 9 pin SUB-D port on the back of the unit that looks like a RS232-connector (in fact I don't know if it is one).This extension contains a RAM buffered by a rechargeable battery.With this hooked on, the oscilloscope remembers its last settings and restores them after powering on.In fact it looses memory again if I don't use the oscilloscope over a longer period of time. Haven't researched that really so I can't give you a number of days.I got it from a local surplus dealer, Helmut Singer but I'm nearly confident he doesn't sell them any more because the company closed and is currently in liquidation (sells rests of their stock though).If you are interested I'll crawl behind my PM 3065 and have a look if I can find out it's name or number -perhaps I can take a look into it.
Quote from: Ero-Shan on April 07, 2020, 03:56:17 pmNow look what followed me home today ...Nice, I've got one too (followed me home in a similar way as yours). Service manual with schematics can be found on the net. It has a nice sharp trace, but one thing I really dislike: All the settings are lost on power down, the scope always starts to the same defaults (no battery inside to replace that could backup the settings). And if the LCD backlight is burned out (it's incandescent), the LCD is hard to read.Oh, wait a moment - mine has more buttons, indeed it's a PM3055. Looks quite similar otherwise.
Now look what followed me home today ...
Quote from: Ero-Shan on April 07, 2020, 05:26:13 pmA few days ago ...... there was a CRO on the bay that looked like I might get it cheaply. For parts only, smashed BNC, missing knob. Somehow it reminded me of the very first scopes I had seen as a young boy. And not much money lost, anyway. I actually got it for 6.50 € + 9.50 € shipping.It is a Philips PM3230, a true dual beam scope:The overall appearance of the instrument is (to me) that Philips tried to create an instrument for the professional market: The PCBs are layed out nicely, it is unclobbered, the trimmers are mostly separated from the PCBs, labeled and arranged neatly.Alas, the ordeal of shipping - although not too shabby packaged - was too much for the power switch, and, even worse, for all those plastic PCB mounts. Upon opening, a small pile of broken plastic emerged. Please note the huge diameter of the CRT where the deflection plates are connected!There also has been a repair (attempt?) that does make me uneasy. Repaired/original channel side by side:In it's current condition, I won't try to power it up (there are some broken wires from the not fastened PCB, after all). But at least it has got all tubes, so I won't complain.From what I've read, the scope seems to be rather unstable. The combination of tubes and germanium transistors wasn't a match made in heaven. One fine day, I hope I might see a trace on that screen.One more thing: That was the time when they all used those 'quick open/close' screw-like mechanisms instead of real screws. If only they ever worked! I have a close cousin that is in much worse condition to your a PM3231. Still have some feathers and bird poo to remove from the outside before I think of putting power to it Not sure what the availability of manuals is like but I do have a paper one for mine and a large format Circuit Diagram if it will help you.
RF riddle of the day. CMU200.With a 100Hz span (1kHz too), I get this: (Attachment Link) No, no modulation is applied.10kHz and everything else looks fine. Except that it's 10dB off (too low) (Attachment Link) The 10dB offset is also present in the selftesting routine on all frequencies and attenuations.... (Attachment Link) But oddly *not* on the power meter (Attachment Link)
Quote from: beanflying on April 08, 2020, 12:39:11 amQuote from: Ero-Shan on April 07, 2020, 05:26:13 pmA few days ago ...... there was a CRO on the bay that looked like I might get it cheaply. For parts only, smashed BNC, missing knob. Somehow it reminded me of the very first scopes I had seen as a young boy. And not much money lost, anyway. I actually got it for 6.50 € + 9.50 € shipping.It is a Philips PM3230, a true dual beam scope:The overall appearance of the instrument is (to me) that Philips tried to create an instrument for the professional market: The PCBs are layed out nicely, it is unclobbered, the trimmers are mostly separated from the PCBs, labeled and arranged neatly.Alas, the ordeal of shipping - although not too shabby packaged - was too much for the power switch, and, even worse, for all those plastic PCB mounts. Upon opening, a small pile of broken plastic emerged. Please note the huge diameter of the CRT where the deflection plates are connected!There also has been a repair (attempt?) that does make me uneasy. Repaired/original channel side by side:In it's current condition, I won't try to power it up (there are some broken wires from the not fastened PCB, after all). But at least it has got all tubes, so I won't complain.From what I've read, the scope seems to be rather unstable. The combination of tubes and germanium transistors wasn't a match made in heaven. One fine day, I hope I might see a trace on that screen.One more thing: That was the time when they all used those 'quick open/close' screw-like mechanisms instead of real screws. If only they ever worked! I have a close cousin that is in much worse condition to your a PM3231. Still have some feathers and bird poo to remove from the outside before I think of putting power to it Not sure what the availability of manuals is like but I do have a paper one for mine and a large format Circuit Diagram if it will help you.It came with a copy of the circuit diagram in paper form (poor quality). Found the manual on BAMA, albeit in Dutch ("Dubbelstraal oscillograaf"). This CRO is way behind in my repair queue. Might well be years until I get at it.The PM3231 offers higher bandwidth, doesn't it?
Just a quick "I'm still alive" message.Day 2: headache still debilitating, fever still present, aching bones still there but partially buried under the paracetamol.
If it really starts getting on my nerves, I still have some very special pain killers left from my battle with cancer. Take a couple of those and you really don't have a care in the world!