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Re: Rotary Encoder - Found a Nut?
Mickey Mouse? Fitting for Electronics, particularly Digital! Logic ICs evolved from RTL (Resistor-Transistor Logic) to DTL (Resistor-Transistor Logic) to TTL ( T^2L, Transistor-Transistor Logic). around this time the versatility of Digital circuits became apparent with Techs' experimenting generating the next evolution, M^2L - MML, Mickey-Mouse Logic, using devices for purposes for which they were never intended! Long live M^2L! :)
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Re: First BITX to BITX contact...
Tom VE3THR wrote...
Willy W1LY frequently makes long haul 40m contactsAh... but was he doing it with a reduced output BITX40 like I was? hi! I was going through an Elecraft T1 auto-tuner to a 204 ft G5RV up at about 50 ft. The antenna goes right over the house. It has been difficult to impossible to get a match down on 160M since I changed it over to a metal roof a few years ago. It probably makes it act like it's a bit closer to the ground than it is. I just missed getting a photo of a projected image of the sun with the ladder-line from the G5RV right in front of thesun minutes before the eclipse this morning. Perhaps another day! I think we had a very rare path on 40m last night...Yes, I think we were very lucky. I hope there are more BITX to BITX contacts with you and others down the road. -- 73 Keith VE7GDH |
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Re: Rotary Encoder - M7x0.75 Jameco appears Correct?
John P
On Mon, Aug 21, 2017 at 11:34 am, Michael Hagen wrote:
Nuts to the eBay seller that left OFF the Nuts!I looked at about 3 pages of them on eBay last night figuring if I found some with the nuts, I'd just get a?few more. None of the ones I looked had the nuts. Now Jameco is going to be wondering why all of a sudden hundreds of people are ordering 7 -.75 nuts! ? -- John - WA2FZW |
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Re: Rotary Encoder - M7x0.75 Jameco appears Correct?
开云体育Yes, the Nut is an M7 x 0.75 mm and a "Thin"
nut.? Thanks for the Alps data sheet.
So the Jameco one looks correct.? The Jameco dimension is labeled wrong.? It is probably the Nuts Outside dimension.
Nuts to the eBay seller that left OFF the Nuts! Mike, WA6ISP On 8/21/2017 9:19 AM, Mvs Sarma wrote:
-- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@... |
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Re: First BITX to BITX contact...
Well Keith...Willy W1LY frequently makes long haul 40m contacts on his bitx40 using an inverted vee dipole. Mind you he is on the east coast near sea level but nonetheless, he has really piled up the miles per watt! I think we had a very rare path on 40m last night. For once I was at the right station when the train came in!
Thanks for the flowers, you're in the log too. Let's do this again. 73 Tom? |
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Re: Rotary Encoder - Found a Nut?
Please see? at top of page7 , where the? ALPS make but is defined. I suppose, others too might follow the similar size. On Mon, Aug 21, 2017 at 9:18 PM, Michael Hagen <motdog@...> wrote:
--
Regards
Sarma ? |
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Re: New bitx40 build.
Karl Schwab
I agree, this little radio sure is fun, especially with respect to the price!? 73, de KO8S, Karl On Sunday, August 20, 2017 5:38 PM, RCC WB5YYM <curtis03@...> wrote: I lit the little radio today, and no smoke. Made no tests on on the current, just turned it on and listened. The radio sounds really nice. I do have tuning clicks with no antenna disconnected, but with the antenna connected, I don't hear them at all. I checked the power out and thought it was down. I do not have a pep meter, but the meter would only kick up to about 1 watt on transmit. At that power, it looks to be driving the pair if irf510's to about 20 watts, maybe a little more if I had a pep meter. If it sounds decent on transmit I will be tickled pink. ?I guess I need to try and make a contact. I've got butterflies.... I kind of like the tuning. It took me a minute to catch on, but I'm slow that way. It is pretty cool |
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Re: the device is operational!
bill steffey
when i needed to get 20 for club bitxbuild...
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i ended up at copterlab.com ???? $9.99 incl freight,,,,( for 12 pcs ) to Pennsylvania At 11:08 AM 8/21/2017, you wrote:
JanJack F1NQP wrote...Keith what do you use as a box?It is a plastic (PVC) enclosure from Amazon. I think |
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Re: Rotary Encoder - Found a Nut?
开云体育I tried the nut on this pot on my encoder, it fits!? So it is some kind of standard for import 6mm pots too. Yes, looks like McMaster does have Thin Nuts in Metric, but NOT 7MM. They skip that size. I bought my encoders on eBay, the picture showed a thread and a nut.? I guess we have to really be careful to look at the pictures? I got 10 for about $8.?? I have a bunch of Un Threaded ones, I have hot glued them in a "tight" hole and they have not fallen out. Kinda Micky Mouse, I know. Mike I bought these pots, just happens the nuts fit my
encoders..........
-- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@... |
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Re: I7SWX PTT Pop Mute
Seems like all this work on muting the Tx to Rx pop situation may be an attempt to treat the symptom instead of fixing the actual problem.? This infamous BITX Click and the 20 ms Tx carrier burst is caused by charging and discharging of C-64, C-68, C-69, C-70, C-73, and to a lesser extent other capacitors that charge or discharge during short time periods when changing from Tx to Rx and from Rx to Tx.? The Tx carrier burst happens when the BFO mixer diodes are held in conduction while these capacitors discharge or charge to normal operating potential for Tx mode.? The BITX Click on change from Tx to Rx is caused by these capacitors charging or discharging to normal Rx operating potential when changing from Tx to Rx mode.? Might it be possible to move these capacitors so that they connect prior to switched voltages for Tx and Rx modes?? While it would be difficult to make these changes on the present BITX-40 PCB, maybe someone who is building a BITX-40 from scratch and using ugly-construction method could make the changes and evaluate results. Arv? K7HKL _._ On Mon, Aug 21, 2017 at 7:50 AM, Giancarlo via Groups.Io <i7swx@...> wrote: Hi Jonathan and all, |
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Re: Rotary Encoder - Found a Nut?
John P
On Mon, Aug 21, 2017 at 07:50 am, Michael Hagen wrote:
If you go to McMaster Carr you can see drawings of bolts.? 7mm are 7 mm outside dia?That was the first place I looked! They have thin nuts for?American size threads, but none for metric. ? -- John - WA2FZW |
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Re: the device is operational!
JanJack F1NQP wrote...
Keith what do you use as a box?It is a plastic (PVC) enclosure from Amazon. I think others might have got it from eBay, AliExpress, Banggood etc. It's upside down in the 1st and 3rd pictures on Amazon's site. The feet mount on the bottom, so that grill is on the bottom too. -- 73 Keith VE7GDH |
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Re: Rotary Encoder - Found a Nut?
Graham
all threaded devices be it a bolt or panel mount device will have it's
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outside diameter a bit smaller than the stated size. In other words a M7 bolt (i.e. 7mm) will have an outside diameter somwehat small than 7mm due to the tolerance of the thread. Your typical panel mount pots from Asia which has a measured outside diameter of the thread that is near 7mm will in all likelihood be threaded M7 x 0.75. Brand name Bradley, Bourns, (etc) which are larger than 7 m will be threaded 3/8-24. cheers, Graham ve3gtc On 8/21/2017, "Michael Hagen" <motdog@...> wrote:
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Re: Rotary Encoder - Found a Nut?
开云体育
On 8/21/2017 7:49 AM, Michael Hagen
wrote:
-- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@... |
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Re: Rotary Encoder - Found a Nut?
开云体育I don't think it is 7mm, mine measures 6.75 outside diameter. If you go to McMaster Carr you can see drawings of bolts.? 7mm are 7 mm outside dia? All Electronics Pot NUT Fits!? 10K audio taper Cat# NATP-10K about $0.50 Pot, Nut, and flat washer. You could also make you panel hole undersize (no clearance), and thread the encoder in, there is so little turning force, that would work too?
Mike, WA6ISP On 8/21/2017 5:14 AM, Vince Vielhaber
wrote:
A google search for M7x0.75 will turn up a number of suppliers. The going price seems to be 50 cents ea. Vince.Actually a friend came up with this drawing late last night which seems to indicate a 7mm - 0.75. -- John - WA2FZW -- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@... |
F1NQP JanJack