We all should be reminding ourselves of these facts and applying them, me included = good one!!
Just yesterday I got on too 86 year old ma about not making her mind up about what damn cereal to eat. See ended up just boiling a couple of eggs. I have to learn to relax too. That methotrexate the Gastro dr has me on for Crohn's is nasty stuff, my herb is pale by comparison. Imagine prescribing stuff and never even trying it? Reminds me of a bad drug dealer.
Deep breathe, relax, less confrontation. Tough choices for you American's on next election day. My try at humour.
Electronics wise I have been messing with FM tuners, put the tuner back in the old Sansui G-7500 after major mods, power supply from a Pioneer SX-1050(120W/ch), LME49830 with alfet ALF16N_P16W laterals. Sounds sweet. great bass punch even with the old 10mF ecaps. Now I have an amp with voltmeters.
I am comparing tuners, I got a crown fm2 and the sansui g-7500 tuner seems to be the better choice. Circuitry wise the fm2 should be better. when i got the fm2 it sounded bad, figured out that the IF offset programming setting was set off from 10.7MHz. The ceramic filters are murata MX with red paint which i always thought was for 10.7M. I guess I could sweep them if I get ambitious. the crown is very sensitive but rather dull in sound quality. thought that the pulse count detector might have more effect on distant stations, not really. As far as cleaning up FM hash/junk, the Si4735 shines, but it lacks tonal quality compared to the G-7550 which is as simple as it gets, hitachi ha1137 and ha1196. Not sure why the diff in analog tuners. things to play with. Might go for a local kenwood KT-8300 tuner for $100. Would like to have a setup where I can play/select with different IF filters, gain, detectors, stereo decoders. stuff like comparing Hitachi HA11223 vs Sanya LA3450 stereo decoders.
have fun
Yes, you do need to get out more....
It would be be interesting to hear about what you find.
I have never been in love with FM sound.
Sure, processing generally screws the sound of commercial stations, but even when processing is minimal/done right, FM system still does not sound right to my ear.
The problem imo is noisy/lack of solid centering due to matrixing....programme centre noise does not come back the same.
Dan.
When I am outside, say gardening, or having a cold one, I am not too concerned about.
One commercial free station I get, CFGI, comes in weak as they are low power, I listen too it in mono to eliminate the stereo noise artifacts. Sometimes the folded dipole, tuned to the carrier, is better than if I use the LPA on the tower. Everyone should have one of these stations. Great tunes and only local weather and events.
me and the wife thought we heard a skip from Europe/Asia the other day, sounded like Slovak or something like that. Adds to the experience.
Anyone have a datasheet for the hitachi HA12401A pulse count detector? I have never been able to find a datasheet or a spare part.
One day I'll get the Si4770 together with a external DAC and add that to the mix. back to picking weeds 🙂
I will let someone else pick the tunes and it so happens, they have tunes I do not have, which is great.
One commercial free station I get, CFGI, comes in weak as they are low power, I listen too it in mono to eliminate the stereo noise artifacts. Sometimes the folded dipole, tuned to the carrier, is better than if I use the LPA on the tower. Everyone should have one of these stations. Great tunes and only local weather and events.
me and the wife thought we heard a skip from Europe/Asia the other day, sounded like Slovak or something like that. Adds to the experience.
Anyone have a datasheet for the hitachi HA12401A pulse count detector? I have never been able to find a datasheet or a spare part.
One day I'll get the Si4770 together with a external DAC and add that to the mix. back to picking weeds 🙂
For someone of youthful age, though completely void of social/diplomatic attributes, Waly does make lots of rational sense. (imho)
Pinout and block diagram.
Nikko-Gamma-40-Service-Manual - Vintages HiFi
Found this.
I used to volunteer station tech for the local FM community station...great local presenter music/special interest slots, local/community news etc, and I got it sounding very nicely hi-fi, still is.
Dan.
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I have several FM tuners... Marantz, Magnum DynaLab, Sony, Kenwood. But listen to my T2 now.
You might want to get hold of a Yamaha T2 FM tuner. A super tuner.
They are sometimes hard to find but worth the effort.
THx-RNMarsh
You might want to get hold of a Yamaha T2 FM tuner. A super tuner.
They are sometimes hard to find but worth the effort.
THx-RNMarsh
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I have given up on FM. Never lived anywhere with really good signal and sadly in UK they put gorillas in charge of the optimod to placate people in cars so when there was a nice live concert on between 5 and 8pm it would be compressed to death. Zadok the priest loses its wonder when you don't have that huge crescendo as the choir come in.
When Nicam came in for digital stereo on TVs it was a vast improvement. Nowdays the streams are so much better.
When Nicam came in for digital stereo on TVs it was a vast improvement. Nowdays the streams are so much better.
I have 3 tuners active and then I have FM on Comcast cable.
I normally use Comcast cable for news, etc. For real music, like PHC that comes on weekly, I use my Marantz 10 (not B) tuner that I find sonically wonderful in MONO! For my office I have an Onkyo that has served me faithfully for decades, and a newish modified Sony FM tuner that I can switch in instead of the Marantz, if I want. It does sound better than Comcast cable, but not as good as the Marantz, so I seldom use it.
Visiting the Newport Show last week, I ran into Tim P. a fellow master audio designer at a hospitality room and we had an excellent discussion on FM multiplex.
Now, Tim P. and I have been serious competitors for decades, and we have both designed amps, preamps, studio boards, and even analog master recorders, BUT I have never designed FM and he has, so his input on FM multiplex, its problems and some solutions was enlightening. No wonder, I don't like multiplex much. '-)
I normally use Comcast cable for news, etc. For real music, like PHC that comes on weekly, I use my Marantz 10 (not B) tuner that I find sonically wonderful in MONO! For my office I have an Onkyo that has served me faithfully for decades, and a newish modified Sony FM tuner that I can switch in instead of the Marantz, if I want. It does sound better than Comcast cable, but not as good as the Marantz, so I seldom use it.
Visiting the Newport Show last week, I ran into Tim P. a fellow master audio designer at a hospitality room and we had an excellent discussion on FM multiplex.
Now, Tim P. and I have been serious competitors for decades, and we have both designed amps, preamps, studio boards, and even analog master recorders, BUT I have never designed FM and he has, so his input on FM multiplex, its problems and some solutions was enlightening. No wonder, I don't like multiplex much. '-)
Instead of "youthful age", I would use "not being a cranky old fart with too much time in his hands".
FM is fine when there are non commecrcial stations to dial into (we have a few left here).
As you are talking of getting out more, what about night listening to MW, SW, LW (the latest almost abandoned everywhere) to stations from abroad?
George
As you are talking of getting out more, what about night listening to MW, SW, LW (the latest almost abandoned everywhere) to stations from abroad?
George
Ok Waly, we have your response.
Now why did I bring this up? It reminds me of how I was before I got my first professional level job in 1966. I was a 'handful' too, but the older engineers coached me on how to communicate in a professional way. They would not tolerate anything else. I'm glad that I learned, because it makes social intercourse easier, and potentially less humiliating, especially if someone sticks their neck out with a new concept, example, or just their experience.
It would be like heckling at an AES talk, it just isn't done (so far as I have experienced). Of course, in this case we are talking about preparation and effort in making the AES talk in the first place. I know that many of you here, who have done that sort of thing know how hard it is go give a talk in the first place, and they should be given at least common courtesy while and after giving it. I call this 'professional courtesy' and it could be further extended to on line discussions as well, improving communication without throwing away any actual dissent from the conversation.
Waly, your last statement needs to be addressed:
'Cranky old fart' is the key. Now, I have been accused of being cranky. This was certainly true in the past, but now I use Prozac and I have much more patience. Perhaps not as much as a loving mother or friend, but enough to be civil, so long as the other party is as well.
Now, how about the 'old fart' comment. Yes it is true, I am 74 years old and semi-retired. I only work part time for 3 companies now, and do not have to commute (thank goodness) anymore or spend 8 or more hours a day at a job site, but that doesn't mean that I have too much time on my hands. I study circuit electronics virtually every day, and am always trying to catch up reading my journals and technical magazines. This is what keeps me up-to-date with the designs that I am concerned with. I can't say much about digital design or even RF design, it is not my area of expertise.
Now Waly, 74 years old may seem a long way from where you are at the moment, maybe 50 years or more, but if you get here you will find that you are very much the same person you were in your 20's, except with a lot less stamina and a lot more experience. This is a reasonable tradeoff, considering the alternative. Just wait an see! '-)
Now why did I bring this up? It reminds me of how I was before I got my first professional level job in 1966. I was a 'handful' too, but the older engineers coached me on how to communicate in a professional way. They would not tolerate anything else. I'm glad that I learned, because it makes social intercourse easier, and potentially less humiliating, especially if someone sticks their neck out with a new concept, example, or just their experience.
It would be like heckling at an AES talk, it just isn't done (so far as I have experienced). Of course, in this case we are talking about preparation and effort in making the AES talk in the first place. I know that many of you here, who have done that sort of thing know how hard it is go give a talk in the first place, and they should be given at least common courtesy while and after giving it. I call this 'professional courtesy' and it could be further extended to on line discussions as well, improving communication without throwing away any actual dissent from the conversation.
Waly, your last statement needs to be addressed:
'Cranky old fart' is the key. Now, I have been accused of being cranky. This was certainly true in the past, but now I use Prozac and I have much more patience. Perhaps not as much as a loving mother or friend, but enough to be civil, so long as the other party is as well.
Now, how about the 'old fart' comment. Yes it is true, I am 74 years old and semi-retired. I only work part time for 3 companies now, and do not have to commute (thank goodness) anymore or spend 8 or more hours a day at a job site, but that doesn't mean that I have too much time on my hands. I study circuit electronics virtually every day, and am always trying to catch up reading my journals and technical magazines. This is what keeps me up-to-date with the designs that I am concerned with. I can't say much about digital design or even RF design, it is not my area of expertise.
Now Waly, 74 years old may seem a long way from where you are at the moment, maybe 50 years or more, but if you get here you will find that you are very much the same person you were in your 20's, except with a lot less stamina and a lot more experience. This is a reasonable tradeoff, considering the alternative. Just wait an see! '-)
(As far as I've understood, 'too much time on their hands' is the standard for COF's to look forward to)
Mr. Curl, my comment was not directed specifically towards you. There are many COFs here, with different degrees of EE knowledge, from retired sales men to PhDs, and BTW there is no minimum age requirement to qualify as a COF.
IMMV, but because you mentioned it, I would not think you qualify as somebody with good social skills, flexible and at ease with communicating.
But then a youngster in his late 20's is not entitled to finger point the COFs. So let's stay with technology.
Well totally off the subject and to me quite humorous, my local electrical utility has moved up to "smart" meters and is trying to shed loads. So they sent me this about my typical energy use. Took me a minute to realize this is actually the energy draw of my refrigerator and freezer. Usage goes up when the airconditioning kicks in and then when I get home and turn on the entertainment.
Now what size solar panel and batteries would I need to go off the grid? 🙂
Any other suggestions on cutting my energy usage? 🙂
Now what size solar panel and batteries would I need to go off the grid? 🙂
Any other suggestions on cutting my energy usage? 🙂
A while ago I had the opportunity to design an induction heater and I turned it down. I pointed out that were I still in my twenties I'd have probably been delighted to attempt it, but the combination of lethal voltages and high powers, and the likelihood of smoke and possibly fire was just not going to be worth the hours I'd bill.
The client, himself a consultant, is a good deal younger, and had done some manner of a similar device a few years before. He mentioned a bolt heated to incandescence... And he went ahead and did it again. I warned him about power factor regulations and other details, and he gave those some consideration.
But the point is, there are things that no longer appeal. At least I know that if I did work on them I would be careful enough to avoid electrocution, something that at a much younger age I might have been less concerned with. After all, in our teens we are indestructible, right?
The client, himself a consultant, is a good deal younger, and had done some manner of a similar device a few years before. He mentioned a bolt heated to incandescence... And he went ahead and did it again. I warned him about power factor regulations and other details, and he gave those some consideration.
But the point is, there are things that no longer appeal. At least I know that if I did work on them I would be careful enough to avoid electrocution, something that at a much younger age I might have been less concerned with. After all, in our teens we are indestructible, right?
I agree with you, Waly. I am not a diplomat, and I too, am too outspoken at times. However, I do try to be professionally polite when the situation demands it. My favorite comment that my friends have told me that I have repeatedly stated over the years is: "The trouble with you is...... " Sound familiar? And usually I was right, BUT so what? Just wait until you work with someone with this sort of attitude, and they, even without any justification, bar your proposal, even though you are 'right' and can prove it experimentally and mathematically. Then you will know what not to do, if possible, in future.
Thanks Ed.
So, the Y axis doesn’t show voltage drop across the resistors as I (wrongly of course) assumed. Then it follows that the culprit is not inductance but capacitance 😱
Where? You mean the second attachment showing the 2 Ohm?
Can you please explain what each colour represents?
George
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