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46:37 seeing this wire wrapped mess of capacitors and later them flapping in the breeze with no mechanical tie points, makes one wonder why others like M.Caldeira or Robert Anderson bother with restuffing caps, relocating caps, putting in terminal strips or even going to the length of buying adapt-a-cap PCB boards... Oh wait i know why; they want to do a good job for the paying customers not just a "it will work until it is off my bench" job... I dont know what canadian law is on this, but in most civilized countries Jim, being the last one to service this radio, would be the sole one responsible for the electrical safety of this appliance. I am anxious to see what he does about the elephant in the room; the missing back cover on a hot chassis....

38:40 There is a reason Philips opted to make the first capacitor after the 35W4 tube 30uF and not 40uF or 47uF, like Jim intends to. And the reason is the inrush current and repeated peak in charge current near the top of the AC wave. It is a common misconception that this only affects the initial inrush current on a uncharged cap. As a matter of fact the choice of capacity also determines where in the raising edge of the sine wave the recharge of the filter cap sets in. A too high value cap pushes the recharge point toward the peak tip of ur sinewave, meaning that only a very short timeframe (small phase angle) remains to fill the cap up to full peak voltage. And that means a high current needs to flow to achieve that. And again, this peak current is not a one shot event, but repeats with every wave - be it half or full wave depending on ur rectifier design. So choosing the value of the first cap after a rectifier - tube or semiconductor - is walking a fine line between reducing the repetative peak charge current versus ripple reduction. You can easily watch that effect of too high of a filter cap by simulating it in Pspice/LTspice! And even if you are of a less theoretical approach, tube datasheets specify the max capacity of the first filter cap after the tube. In the case of 35W4 it is 40uF. So philips opted for a 30uF as the first cap to stay well below that limit value and thereby reduce peak charge current to ensure a longer tube life. A more knowledgeable and more dilligent tech would have opted to replace the old 30uF with a 33uF one, and at least go for 200V not 160V.

Oh brother!

Oh brother.

After all that tinkering it still works. LOL

Jim's radio shop you tell interesting stories my friend

Jim's radio shop your CZcams videos are awesome my friend

Jim's radio shop it is interesting when you look up tubes in your radio book my friend

Jim's radio shop it is interesting when you look up schematics on antique radios my friend

Jim's radio shop i wish you and your wife and kids and your pet cat 73s my friend

Jim's radio shop iam thinking about getting the XHDATA D-608WB AM FM sw wx Bt mp3 weather Alert emergency portable receiver my friend

Jim's radio shop i have a vintage zenith Trans oceanic transistor shortwave receiver I want to restore it let me no ware I can get Russian germanium transistors?

Jim's radio shop my hobbies are painting pictures 🖼 and listening to shortwave and ssb iam thinking about getting my Grms license my friend

Jim's radio shop i hope you chain all the capacitors on the store owner antique philips tube radio my friend

Jim's radio shop the store owner antique philips tube radio is awesome my friend

Jim's radio shop you are good at restoring antique radios and alignment of antique radios my friend

¿ LOL ¿

¿ LOL ¿

Jim's radio shop your sdr defined shortwave receiver with ssb is awesome my friend

Jim's radio shop your CZcams videos are awesome my friend

Jim's radio shop i wish you and your wife and kids and pet cat 73s my friend

Jim's radio shop iam thinking about getting the XHDATA D-608WB AM FM sw wx Bt mp3 weather Alert emergency portable receiver my friend

Jim's radio shop you are good at restoring antique radios and alignment of antique radios my friend

Jim's radio shop i have a vintage zenith Trans oceanic transistor shortwave receiver I want to restore it let me no ware I can get Russian germanium transistors?

Jim's radio shop my hobbies are painting pictures 🖼 and listening to shortwave and ssb iam thinking about getting my Grms license my friend

Jim's radio shop your antique Hammarlund HQ-100 A Communications receiver is awesome my friend

what year is it ??good morning ..i have this radio but it doesn't get anything except sw1 2 3 what should i clean ??

I consider myself a novice. Jim's videos always make me feel much better about my skills (-: much much better. 😂

Jim's radio shop i wish you and your wife and kids a your cat 73s my friend

Jim's radio shop i have a vintage zenith Trans oceanic transistor shortwave receiver I want to restore it let me no ware I can get Russian germanium transistors?

Jim's radio shop my hobbies are painting pictures 🖼 and listening to shortwave and ssb iam thinking about getting my Grms license

Jim's radio shop your antique Hammarlund HQ-100 A Communications receiver is awesome my friend

Jim's radio shop you are good at restoring antique radios and alignment of antique radios my friend

CKDO 1580 is in Oshowa

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Hey carry on and let's get this radio working to 100%

Some radios are a mess kg6mn

21:50 please do away with this makeshift marker generator and most importantly this SDR toy! This is not a precision calibrated instrument. More over there is no need to peak the IF to the absolute exact frequency. 453 vs 455kHz wont make a difference. Not even 450 versus 455kHz would matter in normal operation regarding selectivity and bandwith. This is useless tinkering trying to tune this boatanchor to tolerances, that it was never designed to. Peak the IF to a static 455kHz from the generator and be done. And if you feel the need to visualize the passband curve sweep after you did the static IF alignment and make sure to keep the peak at its place on the x-axis during sweep and only move the sides. This will be more precise than SDR and makeshift markers. And btw; the way the limiter set to on influences the signal shows that you operate the generator at too much power. Electronics Old and New did a good video on IF sweep adjustment. Maybe gontake a look there - oh right, you dont take advice from others.

Nice radio testing 😊😊

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Jim's radio shop my hobbies are painting pictures 🖼 and listening to shortwave and ssb iam thinking about getting my Grms license my friend

Jim's radio shop your CZcams videos are awesome my friend

Jim's radio shop iam thinking about getting the XHDATA D-608WB AM FM sw wx Bt mp3 weather Alert emergency portable receiver my friend

Jim's radio shop i have a vintage zenith Trans oceanic transistor shortwave receiver I want to restore it let me no ware I can get Russian germanium transistors?

Jim's radio shop your Hammarlund HQ-100 A Communications receiver is awesome my friend

Jim's radio shop you are good at restoring antique radios and alignment of antique radios my friend

Show me one that has the stand with the rollers on it

Fixing problems with Chinese mini-whips: Perhaps the Chinese factory reversed the polarity between the power plug in the case and the bias-T board. See 7 to 9 minutes into czcams.com/video/MuenCKFC-iI/video.html Next, the bias-T board of some units has a capacitor C3 which is supposed to stop DC from reaching the receiver, however the printed circuit board designer mistakenly ran a conducting strip under C3 from one connection of the capacitor to the other so that C3 does nothing. To repair, you must unsolder C3, break the connection under C3, and resolder C3. For details, see czcams.com/video/9Jtzw2QIvw0/video.html Another problem is that the input transistor in the original PA0RDT mini-whip schematic is a J310 JFET, but some Chinese mini-whips replace this with an unknown type of bipolar transistor. See czcams.com/video/tvoOAWHiK20/video.html Therefore, if you purchase a mini-whip from China, be prepared to correct construction errors before the antenna can function as PA0RDT designed it. Lastly, regarding the multiple comments on this video by Greg-et2dp, this appears to be impossible now. At least I can no longer leave more than one comment per CZcams video. I found this out when I was trying to answer a question that someone asked me yesterday about a comment I had posted a year ago, and CZcams would not post my answer. In fact, I had made several comments/questions about that video a year ago, and they were all still there. However, when I tried to answer the recent question by editing my year-old comment to include the answer to the recent question, both my year-old comment disappeared as well as the recent question about that comment.

Hes trying his best. I hope he gets it right and can put back together and get on wit another project.

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