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I recently purchased the LCR-T5 test meter (eBay #142169115833) and am very pleased with its results. I build a lot of projects and, when you're two years younger than dirt, reading those cap numbers is almost impossible. Chokes and inductors are also easily read, as well as diodes, transistors, and other devices. It's saved me some grief as recently as last week when an axial inductor was bad. Measuring before you put it in the circuit takes a few extra seconds, but enhances the odds I'll still have hair when the project is done.

Jack, W8TEE

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From: Mvs Sarma <mvssarma@...>
To: [email protected]
Sent: Wednesday, June 7, 2017 5:02 AM
Subject: Re: [BITX20] uBITX - A reboot of the old BITX

It is OK Lawrence Galea for people on the habit of electronics assembly etc.

For others, things might appear rather difficult.

?I saw some designs that specifically mention? SDR with no inductors or LC tuned circuits, that used to simplify the work of such hobbyists.

?Coming to Inductors, Perhaps it is not just turns that matter.

? If we wind 5 coils with same turns,

?we don't get same inductance value.

? One needs to adjust the spacing of wires etc and try to make/ buy a low value inductance meter like one of late Neil Hecht (AADE)?

?of late , I find it easy to make and use VK3BHR? LC meter and use it for measuring actual L value of the home brew inductor.
?

regards

?sarma

?vu3zmv

On Wed, Jun 7, 2017 at 12:58 PM, Lawrence Galea <9h1avlaw@...> wrote:

Dennis

smd components are easy to solder.

Coils are also easy to wind.

You just have to give it a try.

Lawrence

On Wed, May 10, 2017 at 5:49 PM, Dennis Zabawa <kg4rul@...> wrote:

Things to consider if a uBITX kit is ever offered:

- A kit without the SMD parts already installed is out of the skill set for a LOT of builders. ?

- A source for pre-wound inductors would also be greatly appreciated.

--

Regards
Sarma
?

Virus-free.

The IRF510 gets plenty hot, a BS170 will likely blow in this circuit.? Wear eye protection.? T7 converts the 50 ohms to 12.5 ohms at the IRF510, you might go without T7 is using a relatively wimpy FET, and maybe power the PA from 6v instead of 12v.? A BS170 requires less drive, so cut back on R136.? Other big TO220 enhancement mode NFET's might be a better choice, they likely won't blow, ?just not give much output due to the order of magnitude increase in gate capacitance.? I have my doubts, it's hard enough to get an RF amp to behave with thorough analysis.. ?


On Tue, Jun 6, 2017 at 07:54 pm, Ryan Flowers wrote:

Looks like the Drain and Gate are reversed, but that's easy enough to resolve. Shall I just solder it in and give it a try? Or will I need to change R136 and/or RV1? Thanks a lot. This is a learning experience for me for sure :)

?

there is a cheat method. which is this :

usually the other signal repeats her/his callsign a few times. you should be able to get it two or three passes. replay the callsign's morse sequence in your mind. and forget about the rest. you can probably make out the signal report from the rest of the fast and furious.

over time, other stuff will start making sense too.?

after 8 wpm, no one should bother to learn before you hit the key. if you can't follow the other side, it is their problem. harr! harr! harr!

- f

On Wed, Jun 7, 2017 at 11:11 PM, Daniel Isaza <hk4dei@...> wrote:

Hey Terry,

I started learning from:

if you want to practice copying off the air at various speeds, check the ARRL code practice schedule on the different bands, or you can download the same audio files from here: download them to your mp3 player, phone, pc, etc, go to sleep listening to them :) , etc practice every day for a while, even at slightly higher speed than you feel comfortable, don't worry if you can't copy everything, keep trying and it will eventually happen, then increase the speed a bit more, this also requires some patience, just give yourself time to learn this new "language".

One of the most important abilities is to learn not to think about any missing characters because you'll miss a lot more trying to figure those out, just let them pass and keep copying, eventually you'll be able to just "fill in the blanks" and get the whole message, that's the same as copying voice transmissions, maybe you can't understand every single word, but you get the whole message and move on. You can begin copying on paper every character you get, but I suggest you make an extra effort to learn to copy on your head as soon as you can, even if it means to lower the speed. When you get to 25 - 30wpm it's very difficult to write everything on paper and it will eventually be a problem for your speed-progress.

I hope that helps.

I can work you at any speed you want, but maybe not on my bitx from here...

Keep it up Terry and PRACTICE,PRACTICE, practice, practice, .......

73

Dan

HK4DEI

On Wed, Jun 7, 2017 at 11:33 AM, terryhugheskirkcudbright via Groups.Io <terryhugheskirkcudbright=yaho[email protected]> wrote:

hi all

i am trying to learn cw but can only read at 10wpm at the moment. i use aldo.

are any of you cw wallers out there happy to work at 10 wpm . just to get me started

terry gm4dso

Hey Terry,

I started learning from:

if you want to practice copying off the air at various speeds, check the ARRL code practice schedule on the different bands, or you can download the same audio files from here: download them to your mp3 player, phone, pc, etc, go to sleep listening to them :) , etc practice every day for a while, even at slightly higher speed than you feel comfortable, don't worry if you can't copy everything, keep trying and it will eventually happen, then increase the speed a bit more, this also requires some patience, just give yourself time to learn this new "language".

One of the most important abilities is to learn not to think about any missing characters because you'll miss a lot more trying to figure those out, just let them pass and keep copying, eventually you'll be able to just "fill in the blanks" and get the whole message, that's the same as copying voice transmissions, maybe you can't understand every single word, but you get the whole message and move on. You can begin copying on paper every character you get, but I suggest you make an extra effort to learn to copy on your head as soon as you can, even if it means to lower the speed. When you get to 25 - 30wpm it's very difficult to write everything on paper and it will eventually be a problem for your speed-progress.

I hope that helps.

I can work you at any speed you want, but maybe not on my bitx from here...

Keep it up Terry and PRACTICE,PRACTICE, practice, practice, .......

73

Dan

HK4DEI

On Wed, Jun 7, 2017 at 11:33 AM, terryhugheskirkcudbright via Groups.Io <terryhugheskirkcudbright=[email protected]> wrote:

hi all

i am trying to learn cw but can only read at 10wpm at the moment. i use aldo.

are any of you cw wallers out there happy to work at 10 wpm . just to get me started

terry gm4dso

Hi All,

Just curious, how many West Coast BITX operators are on this list? Anywhere on the left side of the country. If you don't mind, sound off with your state and town. I'll compile a list from the responses. I have three plus myself that I know personally:

WB0NPM - Escondido CA
KE7RTV - Sparks, NV
W7LTG - Spanish Springs, NV
KK6RPX, Albion CA

Thanks!

Jonathan - KK6RPX