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Re: what distance have you logged
chris gress
With my bitx 40 ?& battery and 1/4 wave vertical my best contacts are? 24/06/17. ? 7.182. EF9R range 1319 miles with 5 watts? 02/07/17. ?7.151.? YL3CW ?range 1039 miles. With 5 watts Holding to work the USA sometime when The kW boys are not around to take over On 6 Jul 2017 08:26, "terryhugheskirkcudbright via Groups.Io" <terryhugheskirkcudbright=[email protected]> wrote: hi all |
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Re: BITX 40 (Pot question)
Haven't tried this, but?I expect?a 1K pot?works as well as a 10K or 100K pot.
The only difference is that a 1K pot draws 100 times more current: 5mA instead of 50uA with a 100K pot. And consequently it dissipates 100 times more power (25mW instead of 0.25mW). So if power consumption is an issue then you'd better choose a 100K pot. (However the difference is marginal compared to the power consumption of the rest of the rig) 73 Allard PE1NWL |
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Re: what distance have you logged
I've worked the western part of Venezuela, about two months ago, SSB, 5pm local time, 12V battery, loop antenna. DanHe gave me a 59 (let's say 57/58 real RST) but he had no problem copying me. According to google maps: Total distance: 407.11 km (252.97 mi) 73, On Thu, Jul 6, 2017 at 2:26 AM, terryhugheskirkcudbright via Groups.Io <terryhugheskirkcudbright@...> wrote: hi all |
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what distance have you logged
hi all
conditions are not good for me with long skip into france or germany where i am competing with big pa's , foreign language and noise. i have made one contact when there was short skip. details below. my call?????? gm4dso date?????????? 2017/06/23 time??????????? 18:49 utc freq???????????? 7.174 mode????????? ssb his call??????? g4vsj distance???? 195.5 miles What have you acheived terry gm4dso |
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Re: A Good Book
Totally agree Farhan, Here's a nice free book from Frank W. Harris, K?IYE "Crystal Sets to Sideband": A nice & fun reading for the beginner or just to get your feet wet into homebuilding radio equipment. Dan, HK4DEI 73 On Wed, Jul 5, 2017 at 11:12 PM, Ashhar Farhan <farhanbox@...> wrote:
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Re: A Good Book
Jack Purdum
Farhan: Of course I agree that copyrighted work, which is almost always the case when a publishing house is involved, should not be copied. However, I also know that thousands of torrent sites have been shut down, only to have them reopen a few days later by the same people. One of my publishers asserts that for every paid copy there are 6 copies that were downloaded illegally. I had one university in Brazil, one in Denmark, and one in Illinois that were giving downloads of my books free in the university library! ?I wonder how many we don't know about. As I said before, the income I lose pales to insignificance when you consider the discouraging effect it has on potential authors or subsequent volumes by established authors. Not only is information not free, the concept of free information actually reduces the potential for more information by discouraging writers from further effort. Jack, W8TEE From: Ashhar Farhan <farhanbox@...> To: [email protected] Sent: Thursday, July 6, 2017 12:12 AM Subject: Re: [BITX20] A Good Book Jack, The house rule is clear : it is illegal to encourage distribution of works that are copygright with rights to distribute reserved. Books are a result of long labour. I marvel that the amount of intense work that produces a book like the EMRFD or the AoE. There is a misconception among many that 'information is free'. It is as free as the cutlery at your friend's home. On this group, we must insist on discouraging people from piracy. Authors must decide if their work is freely sharable or not. - f On 6 Jul 2017 2:30 a.m., "Graham" <planophore@...> wrote: The ARRL has reprinted Experimental Methods in RF design as of early this year: |
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Re: BITX 40 (Pot question)
¿ªÔÆÌåÓýThanks for that, Ted. A way forward for when I can get proper RX. On 06/07/17 16:25, Ted Doell wrote:
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Re: BITX 40 (Pot question)
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Re: A Good Book
Jack, The house rule is clear : it is illegal to encourage distribution of works that are copygright with rights to distribute reserved. Books are a result of long labour. I marvel that the amount of intense work that produces a book like the EMRFD or the AoE. There is a misconception among many that 'information is free'. It is as free as the cutlery at your friend's home. On this group, we must insist on discouraging people from piracy. Authors must decide if their work is freely sharable or not. - f On 6 Jul 2017 2:30 a.m., "Graham" <planophore@...> wrote: The ARRL has reprinted Experimental Methods in RF design as of early this year: |
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Re: BITX 40 (Pot question)
My kit was supplied with 10k+sw (Vol) and 100kLin (tuning) for analog. I bought with Raduino, and the wiring diagram says tuning there is 10kLin. With BITX40 kit wired properly (al fresco) for Analog, there's hellish hiss/hash, so I'll need to diagnose before attempting or even bothering to connect Raduino. Am I going to need a 10kLin pot? If so, why is that not part of the Raduino-kit? If not, a 3-pin Molex 'plug' (like the one on the PCB) would be a boon, giving the ability to wire it to the Raduino to accept the 100k pot's connector without having to re-wire the pot. p.s. like many others, I'm going to be strapped for the Vol-pot's knob - it ain't the old 1/4"/6mm standard. Haven't investigated local/on-line shops yet (there should be a reasonable selection of styles to that standard available somewhere), but being cosmetic that's *my* concern. :) |
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Re: BITX 40 (Pot question)
My kit was supplied with 10k+sw (Vol) and 100kLin (tuning) for analog. I bought with Raduino, and the wiring diagram says tuning there is 10kLin. With BITX40 kit wired properly (al fresco) for Analog, there's hellish hiss/hash, so I'll need to diagnose before attempting or even bothering to connect Raduino. Am I going to need a 100kLin pot? If so, why is that not part of the Raduino-kit? If not, a 3-pin Molex 'plug' (like the one on the PCB) would be a boon, giving the ability to wire it to the Raduino to accept the 100k pot's connector without having to re-wire the pot. p.s. like many others, I'm going to be strapped for the Vol-pot's knob - it ain't the old 1/4"/6mm standard. Haven't investigated local/on-line shops yet (there should be a reasonable selection of styles to that standard available somewhere), but being cosmetic that's *my* concern. :) |
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Re: Bitx40 Pavel's blend sketch updated (the Allard's folk one with S-Meter, TX-meter, AGC)
Michael Davis
Now that I have installed 1.17.1, I was wondering if anyone has a way to prevent the frequency from running up or down at either end of the 10 turn pot? That way, when full band coverage function is set, there won't be a way to go much below say 7125 (or lower for cw if desired) or much above 7300. I had installed the anti gallop buttons and resistors, but removed them when I added the new sketch. Maybe installing the resistors alone, once the tuning range is set where I want it. That might keep it from running up or down. Your thoughts?
Sent from Mike's iPad WA1MAD |
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Re: Pins and colors
Michael Davis
All set on pin colors, pin removals, pin re-insertions. I now understand the color code that was mentioned earlier. Pin A0-A7, black, brown, red, orange, yellow, green etc etc. makes sense now. It didn't earlier with only 4 pins inserted, it looked random. Thanks to all for your input and help.
Sent from Mike's iPad WA1MAD |
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Re: dipole antenna changes, big improvement
I heard you Sunday,but I couldn't get back to you...bet you can hear me now...good job. On Jul 5, 2017 9:50 PM, "KC8WBK via Groups.Io" <cruisenewsnet=[email protected]> wrote: I added a support line to the middle of my dipole and went from a sagging dipole at 35 feet to an inverted vee at 50 feet.? This is a big improvement, because I rarely heard stations out west before, and I just had a long conversation with a operator in Nevada.? Wow, now I want to put it up even higher. |
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Re: BITX40 Microphone options
Thanks for the heads-up on the Koss CS100 Computer Headset for use with the BITX40 !
I have been using my Yahama CM-500 with good results but I just received?a Koss CS100 from Amazon today. I used the CS100 headset tonight and worked YU7XX in Serbia with my BITX40 and he was flabbergasted that I was only running 5W. He said the audio sounded great so I am sold on the CS100. ? Cheers Michael VE3WMB / VA2NB? P.S. I am operating from my cottage in QC using a 204 foot doublet at 50 ft. |
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dipole antenna changes, big improvement
I added a support line to the middle of my dipole and went from a sagging dipole at 35 feet to an inverted vee at 50 feet.? This is a big improvement, because I rarely heard stations out west before, and I just had a long conversation with a operator in Nevada.? Wow, now I want to put it up even higher.
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Allard PE1NWL