tag:blogger.com,1999:blog-4901205574058136834.post478775436129407728..comments2024-03-26T20:17:30.126-07:00Comments on Every Blade of Grass: SB-401 Transmitter Rebuild Progress - Part 6 - drjimhttp://www.blogger.com/profile/05647484115197408897noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-4901205574058136834.post-58095046534898743492021-02-16T19:54:08.038-08:002021-02-16T19:54:08.038-08:00I'll be getting back to this tomorrow, after T...I'll be getting back to this tomorrow, after The Little Guy goes home.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-63265189455681625262021-02-10T18:04:03.140-08:002021-02-10T18:04:03.140-08:00I don't understand the tech but I like the pic...I don't understand the tech but I like the pics! Well done!LSPhttps://www.blogger.com/profile/08120630078039958644noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-75550095295986958262021-02-06T16:00:47.653-08:002021-02-06T16:00:47.653-08:00I've seen the same question asked in the Heath...I've seen the same question asked in the Heathkit forums. Some people say "If It Ain't Broke...", and "If They've Lasted This Long, They Should Be Good", and I generally agree with them.<br /><br />My view is that more modern diodes have much better surge characteristics, and if a diode is going to fail, it generally does it at turn-on, when the surge current to charge the new, higher capacitance, filters is greatest.<br /><br />The existing diodes are suitable, but I have the replacements, they're not very expensive, maybe $5 to replace all of them, and since I have to desolder them to correct some workmanship issues, I might as well replace them.<br /><br />It's a coin toss, but I'll feel better with the new ones in place.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-17871910989495904712021-02-06T06:06:03.379-08:002021-02-06T06:06:03.379-08:00THe filter caps I can understand...But why replace...THe filter caps I can understand...But why replace the diodes if they aren't bad and will more than do the job? (Not that it hurts, but I fail to understand why). B https://www.blogger.com/profile/10586046436233366155noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-56267636858287581342021-02-02T16:12:33.558-08:002021-02-02T16:12:33.558-08:00Thanks, NFO, but I figure I'm maybe 25% finish...Thanks, NFO, but I figure I'm maybe 25% finished. If I keep at it, I'm hoping to have it finished in about two more weeks.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-62921033126279592562021-02-02T15:12:56.470-08:002021-02-02T15:12:56.470-08:00GReat progress! And yes, you might want to change ...GReat progress! And yes, you might want to change over! :-)Old NFOhttps://www.blogger.com/profile/16404197287935017147noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-41626077837831864082021-02-02T14:52:31.720-08:002021-02-02T14:52:31.720-08:00We have a set of 4 steel rims with studded snows o...We have a set of 4 steel rims with studded snows on them.<br /><br />When she bought the snow tires, she went big.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-32678242160962030802021-02-02T13:37:46.631-08:002021-02-02T13:37:46.631-08:00For Colorado piece of mind, two extra rims with st...For Colorado piece of mind, two extra rims with studded tires is advised. This spring/summer shopping Craigslist can produce some great deals.Well Seasoned Foolhttps://www.blogger.com/profile/16670165728759453075noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-5301295227563220772021-02-02T13:12:31.099-08:002021-02-02T13:12:31.099-08:00Last Greenlee punch I bought was for a DE-9 connec...Last Greenlee punch I bought was for a DE-9 connector about 20some years ago, and IIRC it was about $75.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-31891596602290101232021-02-02T13:11:07.182-08:002021-02-02T13:11:07.182-08:00And you may not always have the room to get a punc...And you may not always have the room to get a punch in there on a fully-built radio.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-6752473240053917562021-02-02T08:55:45.157-08:002021-02-02T08:55:45.157-08:00The price is because we don't do much chassis ...The price is because we don't do much chassis punching anymore. But I think their prices back in the 50's and 60's were probably still not inexpensive.BillBhttps://www.blogger.com/profile/17593147581583316765noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-13058524440777089902021-02-02T05:23:47.035-08:002021-02-02T05:23:47.035-08:00The part of my brain in charge of weird knowledge ...The part of my brain in charge of weird knowledge raised its hand and asked, "I wonder if Greenlee makes a punch for that shape?"<br />According to their website, probably, but when I randomly checked on the prices for their special punches, they were way (stretch that out when you say it, waaaaaaaaaaaay) more expensive than I thought they would be. <br /><br />John in Phillyhttps://www.blogger.com/profile/16196033252818387245noreply@blogger.com