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Re: Maximum safe input voltage to ubitx?
I have a few on hand already Jack. I will try that, hopefully they are not too noisy. thanks, Paul K0ZYV From: Jack Purdum via Groups.Io <jjpurdum@...> To: [email protected] Sent: Monday, February 19, 2018 9:11 AM Subject: Re: [BITX20] Maximum safe input voltage to ubitx? It says "No longer available" Jack, W8TEE From: VE7WQ <v@...> To: [email protected] Sent: Monday, February 19, 2018 1:52 AM Subject: Re: [BITX20] Maximum safe input voltage to ubitx? Better yet, a SEPIC (non-inverting) PM-6009DU Buck-Boost 4A converter: http://tinyurl.com/y9ysz6k5
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Re: Micron? long, logical and hopefully both educational and amusing ...
Here's my 2?, but maybe I'm ? crazy, or even crazy?. ?Come se dice en Espa?ol?? ?Ay caramba! Are you paying in $, €, ?, or ??? Is that knob ?25.4mm?? All hail the ?B?!? Or its little brother the B40?!? Which is better, a 40% discount, or 40¡ë?? All this fussing is like a ? or worse, ?, in my heart.? Maybe it's the weather; we haven't seen 70¡ãF for a while, three months ¡Àa few days anyway. |
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Re: [SPAM] Re: [BITX20] RD16HHF1 in the uBITX
#ubitx
¿ªÔÆÌåÓý> I did find the following in my simulations though... if you change R85 from 100 to 470 ohms (pre-driver stage bias), change R261 and R262 from 100 to 1K ohm, run RV1 wide open (full drive) and then use a compensating capacitor (your 33pf at 14 MHz) across T11 primary with a 1:4 transformer: >? > 6M - 48pf > 10M - 110pf > 20M - 320pf > 40M - 680pf > 80M - 1,500pf > 160M - 4,700pf >? > It shows at least 20 watts out on each band except for 6 meters... where it peaks at 12 watts. >? >? ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? ? email:? bill@... ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Gordon Gibby
Sent: Saturday, February 17, 2018 6:54 PM To: [email protected] Subject: Re: [BITX20] RD16HHF1 in the uBITX #ubitx ? ?Dr. Schmidt -- no way to put some feedback into the circuit in some manner to stabilize the gain?? ? 1000 pf across the 22 ohm emitter resistors to have a 3db break at 7 MHz? ? ? |
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Would like to sell an unopened BITX40 kit
I have an unopened BITX40 kit, just as it arrived at my home from India. I ordered it in November 2017, but since then I've decided I'd rather build a BITX20 if I do a single band unit, or build a uBITX to get 20 meters. Price is $40 USD + shipping in any manner you wish. I will be happy to package the unopened box in another box (double box) if you wish, before shipping.?Two-day priority USPS shipping in the U.S. is $13.65.?Prefer shipping in the U.S. only, otherwise it would be cheaper for you to simply order directly from HFSIGS in India. You can pay me with PayPal, or personal check. No offers, please.?Contact me directly at markvmuller at gmail dot com. I will leave a note here once it is sold. 73s de N5KNG.
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Re: Maximum safe input voltage to ubitx?
Jack Purdum
It says "No longer available" Jack, W8TEE From: VE7WQ <v@...> To: [email protected] Sent: Monday, February 19, 2018 1:52 AM Subject: Re: [BITX20] Maximum safe input voltage to ubitx? Better yet, a SEPIC (non-inverting) PM-6009DU Buck-Boost 4A converter: http://tinyurl.com/y9ysz6k5 |
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Re: Recommendations for learning coding for Bitx and/or arduino
Jack Purdum
Alas, Simon's books are quite good... Jack, W8TEE From: Dennis Zabawa <kg4rul@...> To: [email protected] Sent: Monday, February 19, 2018 8:50 AM Subject: Re: [BITX20] Recommendations for learning coding for Bitx and/or arduino Take a look at these from Amazon: |
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Re: HFsignals no longer selling just vfo
Jack Purdum
These are incredibly useful when experimenting (i.e., messing around) with the Nano. Get a handful of Dupont connectors and have at it! Jack, W8TEE From: LKNDAVE via Groups.Io <novatronix@...> To: [email protected] Sent: Monday, February 19, 2018 9:27 AM Subject: Re: [BITX20] HFsignals no longer selling just vfo nano board.?
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Re: My uBitx shipped today
I had managed to get one of the first batch and decided to order a 2nd one.? 2nd uBITX ordered on 23 December and I just got shipping notification this morning (Central US time) DHL tracking says it has been picked up in Hyderabad and expected delivery date is Wednesday, the 21st (I'll bet it takes at least 1 or 2 days longer as it will have to clear custom. The first one took 4 days from shipping to my receiving it. so I'm expecting it more like this coming Friday.? DHL sure beats India Post though.? I'm waiting on a case for it coming by India Post that was shipped earlier this month.? No telling when that one will get here - LOL.
Jim - W0EB |
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Re: V3C_SBL version Assembly Manual
#bitx20help
Kent , please see this link at bottom photo on page 15
/g/BITX20/files/New%20Hacking%20Your%20Bitx%20Version%203B%203C%2020%20For%2040mt%20Band.pdf ?perhaps it could help you.? all the best ? |
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Re: V3C_SBL version Assembly Manual
#bitx20help
kENT, THE SBL? BITX3C OR SOME SUCH IS same as earlier versions except that he put up diredct SBL1 ones as he had them. do you have the SBL-type board or do you want to convert bitx20 ver3b into sbl?? Regards MVS Sarma ? On Mon, Feb 19, 2018 at 7:22 PM, Kent B. <kbergphd@...> wrote: Hi All, |
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V3C_SBL version Assembly Manual
#bitx20help
Hi All,
The latest assembly manual for the V3C (SBL) that I can find is the Feb 25, 2015, but there is no mention of installation of the SBL.? Anybody having put that particular version together have any problems using either that manual of the prior May4, 2014?? Or is the a manual out there that I have missed?? ?I got this kit in 2016, where it has been in my building queue until now.? Also, I have sent a couple of emails to Sunil at his Gmail address but have not heard back?? Does he have a new email address? If anybody put a write up together, that would be GREAT!? Thanks. 73, Kent KC9LIF |
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Re: My uBitx shipped today
I got a shipping notice too. Order date December 22. I paid for DHL, so we shall see. Looking forward, to the project.? On Mon, Feb 19, 2018 at 8:06 AM, Tom Christian <tmchristian@...> wrote: Just got PayPal delivery status "Sent" today for my uBitX .? My order since 23-Dec-2017 |