Re: Source of LDR required.
Thanks.
Off to get the LDR's on order.
Phil - G7BZD
On Sun, May 28, 2017 at 9:25 AM, Raj vu2zap <rajendrakumargg@...> wrote: Here is more info, attached!
Raj
At 28-05-2017, you wrote:
>Thanks for all the info, most the adverts on ebay do not actually give the resistance figures, so knowing ? a part number instead would help, will have to get the spec sheets up, did try looking for a selection, bit like buying assorted components, but no luck so far, am going to buy a couple as they cost so little.
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Re: Baofeng microphone mod for BITX
Despite the posted diagram i'm still not sure how to wire up the unmodified Baofeng mic to the Bitx.
the speaker connections seem obvious, with ground on the sleeve of 2.5mm and other speaker connection to tip.
the mic + connection seems fairly obvious too , on the ring of the 3.5mm.
But where are the mic - and PTT wires from the Bitx connected, and do they all use the same ground?
Which Bitx wire connects to the tip of the 3.5mm (v+) ?
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I also found out that the drive setting if too high increases the noise from the speaker. My 2x Raduino's are set at 2mA drive, now and the RX is nice and clear. maybe nothing? But as I can barely hear the RSGB news broadcast from DL land on my FT1000 and inverted L, It now sounds the same on my Bitx40.
Phil- G7BZD?
On Sun, May 28, 2017 at 3:35 AM, KC8WBK via Groups.Io <cruisenewsnet@...> wrote: Here are some very basic things to check, sorry if they are too simple, I don't mean to insult:
Try different times of day/night.
You have to tune to the exact frequency or the voices will be distorted.
Are you using LSB? If you are on USB it will be distorted.
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Re: Source of LDR required.
Here is more info, attached!
Raj
toggle quoted message
Show quoted text
At 28-05-2017, you wrote: Thanks for all the info, most the adverts on ebay do not actually give the resistance figures, so knowing ? a part number instead would help, will have to get the spec sheets up, did try looking for a selection, bit like buying assorted components, but no luck so far, am going to buy a couple as they cost so little.
|
Re: Source of LDR required.
Thanks for all the info, most the adverts on ebay do not actually give the resistance figures, so knowing ?a part number instead would help, will have to get the spec sheets up, did try looking for a selection, bit like buying assorted components, but no luck so far, am going to buy a couple as they cost so little. Must get some vero strip board as well.?
Have placed the Bitx40 into its case to get an idea of room available, and theres going to be enough for the add ons, Already built the oyther AGC circuit, just fancied building the LDR/LED one to compare.
Thanks All.
Phil - G7BZD
On Sun, May 28, 2017 at 5:10 AM, Vince Vielhaber <vev@...> wrote:
It was VK3YE's blogpost.? If 40k isn't low enough, sticking the LED where the sun don't shine ain't gonna get it any lower.
Vince - KA8CSH
On 05/27/2017 07:22 PM, Daniel Isaza wrote:
I bet those 40k-400k LDR could work too... too much resistance?, then
put the led further away, cover it with something, paint it, place some
thin film between the two, or even WAY better use a bigger resistor so
the led doesn't shine as bright, what about placing a normal (smaller)
resistor in parallel with the LDR?, etc. The point is to experiment, try
new things, try to make it work with what you have, and of course learn
a lot in the process! :)
73
Dan
On Sat, May 27, 2017 at 3:58 PM, Vince Vielhaber <vev@...
<mailto:vev@...>> wrote:
? ? In trying to figure out what you guys were referring to I did some
? ? digging and the one thing I did find was a blog post saying that a
? ? 40k-400k LDR that he had on hand didn't work.? But one that went
? ? from a few K to about 40k was fine.
? ? Vince.
? ? On 05/27/2017 04:29 PM, Jack Purdum via Groups.Io wrote:
? ? ? ? Also note that Peter encased the LED and LDR in electrical tape
? ? ? ? before
? ? ? ? he actually used it. I think shrink tubing would also work. I, too,
? ? ? ? believe any LDR would work.
? ? ? ? Jack, W8TEE
? ? ? ? ------------------------------------------------------------------------
? ? ? ? *From:* Daniel Isaza <hk4dei@... <mailto:hk4dei@...>>
? ? ? ? *To:* [email protected] <mailto:[email protected]>
? ? ? ? *Sent:* Saturday, May 27, 2017 4:20 PM
? ? ? ? *Subject:* Re: [BITX20] Source of LDR required.
? ? ? ? I'd say just about any LDR will work, go ahead and try that circuit
? ? ? ? using what you have at hand, experiment, be safe, and overall,
? ? ? ? have fun!
? ? ? ? 73
? ? ? ? Dan
? ? ? ? HK4DEI
? ? ? ? On Sat, May 27, 2017 at 7:49 AM, philip yates <phil@...
? ? ? ? <mailto:phil@...>
? ? ? ? <mailto:phil@... <mailto:phil@...>>> wrote:
? ? ? ? ? ? I am trying to get the parts together for the VK3YE AGC, and
? ? ? ? I am
? ? ? ? ? ? having trouble sourcing the LDR,
? ? ? ? ? ? does anyone have the details of a supplier that is suitable,
? ? ? ? or can
? ? ? ? ? ? I use any? LDR ?
? ? ? ? ? ? Thanks
? ? ? ? ? ? Phil - G7BZD
--
? Michigan VHF Corp.? ?? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
|
Re: Source of LDR required.
GL5516 works well. 5 to 10K.? $1.60 for 20 on Ebay.
73
Ken
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Re: Source of LDR required.
It was VK3YE's blogpost. If 40k isn't low enough, sticking the LED where the sun don't shine ain't gonna get it any lower.
Vince - KA8CSH
toggle quoted message
Show quoted text
On 05/27/2017 07:22 PM, Daniel Isaza wrote: I bet those 40k-400k LDR could work too... too much resistance?, then
put the led further away, cover it with something, paint it, place some
thin film between the two, or even WAY better use a bigger resistor so
the led doesn't shine as bright, what about placing a normal (smaller)
resistor in parallel with the LDR?, etc. The point is to experiment, try
new things, try to make it work with what you have, and of course learn
a lot in the process! :)
73
Dan
On Sat, May 27, 2017 at 3:58 PM, Vince Vielhaber <vev@...
<mailto:vev@...>> wrote:
In trying to figure out what you guys were referring to I did some
digging and the one thing I did find was a blog post saying that a
40k-400k LDR that he had on hand didn't work. But one that went
from a few K to about 40k was fine.
Vince.
On 05/27/2017 04:29 PM, Jack Purdum via Groups.Io wrote:
Also note that Peter encased the LED and LDR in electrical tape
before
he actually used it. I think shrink tubing would also work. I, too,
believe any LDR would work.
Jack, W8TEE
------------------------------------------------------------------------
*From:* Daniel Isaza <hk4dei@... <mailto:hk4dei@...>>
*To:* [email protected] <mailto:[email protected]>
*Sent:* Saturday, May 27, 2017 4:20 PM
*Subject:* Re: [BITX20] Source of LDR required.
I'd say just about any LDR will work, go ahead and try that circuit
using what you have at hand, experiment, be safe, and overall,
have fun!
73
Dan
HK4DEI
On Sat, May 27, 2017 at 7:49 AM, philip yates <phil@...
<mailto:phil@...>
<mailto:phil@... <mailto:phil@...>>> wrote:
I am trying to get the parts together for the VK3YE AGC, and
I am
having trouble sourcing the LDR,
does anyone have the details of a supplier that is suitable,
or can
I use any LDR ?
Thanks
Phil - G7BZD
--
Michigan VHF Corp.
|
Here are some very basic things to check, sorry if they are too simple, I don't mean to insult:
Try different times of day/night.
You have to tune to the exact frequency or the voices will be distorted.
Are you using LSB? If you are on USB it will be distorted.
|
Re: 10 turn pot $1 to way too much
I bought a few of these, installed one and initially it had some static but now is clean and turns very easily.
I'm not sure which vendor I used.
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Perhaps not a bitx question so much as a n00b ham question, but this is home so here I'll ask. I finally have my bitx working-ish. I can rx (barely) and when I tx I get measurable output to the antenna.
On rx, I can hear people talking, but it's very distorted. Additionally there is such a pronounced background noise that, even if the rx weren't so badly distorted I most likely wouldn't be able to hear it. I have no idea how to chase this rabbit down it's hole, can I get a hint?
73, Richard
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Re: doTuning() mod, utility, vanity
Speaking of memory issues, one might think it was time to move to a ARM Feather -- same small form factor, 32 bit CPU and lots Flash/RAM.? Works with the Arduino IDE (as do several other small form factor M0 devices).
Of course Jack is part way there with the 8-bit AVR 2560 micro. ?
Drawback of the M0 Feather is 3.3 volt logic.? But it has higher resolution A/D converters, and a real D/A converter (think sine wave vs. square wave sidetone).? Running I2C peripherals like the 5351 or a TFT display negates the issue with 3.3 volts.
Anyway, Allard is working miracles with limited memory resources for sure.
73, Bob, WB4SON
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Re: 10 turn pot $1 to way too much
If the A/D converter is optimized for analog signals with an output impedance of 10k or less would we not be better off with a 10k or less pot rather than a 100k pot? Willy W1ly
On Sat, May 27, 2017 at 6:20 PM, Allard PE1NWL <pe1nwl@...> wrote: I had mine from Conrad, price was about 10 euro at the time. Yes it's more
expensive but i.m.o. it's definitely worth the money.
Try a Mexican first and then a Vishay and you'll understand.
Try , Art. nr.: 429333
73 Allard PE1NWL
On Sun, May 28, 2017 00:02, OZ9AEW wrote:
> with the price for a VISHAY here in Denmark I think you have tried the
> cheap Mexico first !!!!!!!
> 36 USD exclude shipping
>
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Re: doTuning() mod, utility, vanity
Meanwhile I managed to free up some space by removing some other less
useful stuff, and so I could include your extra printLine2 commands.
Thanks for sharing your idea!
Will be included in the next release v1.14.
73 Allard PE1NWL
toggle quoted message
Show quoted text
On Sun, May 28, 2017 02:31, KC8WBK via Groups.Io wrote: This is a mod that an individual could add.?????? It was intended as a way
that the user could customize the radio.
If memory is a problem, then perhaps have multiple versions, for
example,?? I currently don't use USB, CW, or RIT.?? I may want them in a
future build but would rather have a stable sketch?? without them, if
memory is low.?? So today I select a minimal version and later if I build
a multiband rig I select a version with USB or other features.
|
Re: doTuning() mod, utility, vanity
This is a mod that an individual could add.??? It was intended as a way that the user could customize the radio.
If memory is a problem, then perhaps have multiple versions, for example,? I currently don't use USB, CW, or RIT.? I may want them in a future build but would rather have a stable sketch? without them, if memory is low.? So today I select a minimal version and later if I build a multiband rig I select a version with USB or other features.
|
Re: Source of LDR required.
I bet those 40k-400k LDR could work too... too much resistance?, then put the led further away, cover it with something, paint it, place some thin film between the two, or even WAY better use a bigger resistor so the led doesn't shine as bright, what about placing a normal (smaller) resistor in parallel with the LDR?, etc. The point is to experiment, try new things, try to make it work with what you have, and of course learn a lot in the process! :)
73
Dan
On Sat, May 27, 2017 at 3:58 PM, Vince Vielhaber <vev@...> wrote: In trying to figure out what you guys were referring to I did some digging and the one thing I did find was a blog post saying that a 40k-400k LDR that he had on hand didn't work.? But one that went from a few K to about 40k was fine.
Vince.
On 05/27/2017 04:29 PM, Jack Purdum via Groups.Io wrote:
Also note that Peter encased the LED and LDR in electrical tape before
he actually used it. I think shrink tubing would also work. I, too,
believe any LDR would work.
Jack, W8TEE
------------------------------------------------------------------------
*From:* Daniel Isaza <hk4dei@...>
*To:* [email protected]
*Sent:* Saturday, May 27, 2017 4:20 PM
*Subject:* Re: [BITX20] Source of LDR required.
I'd say just about any LDR will work, go ahead and try that circuit
using what you have at hand, experiment, be safe, and overall, have fun!
73
Dan
HK4DEI
On Sat, May 27, 2017 at 7:49 AM, philip yates <phil@...
<mailto:phil@...>> wrote:
? ? I am trying to get the parts together for the VK3YE AGC, and I am
? ? having trouble sourcing the LDR,
? ? does anyone have the details of a supplier that is suitable, or can
? ? I use any? LDR ?
? ? Thanks
? ? Phil - G7BZD
--
? Michigan VHF Corp.? ?? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
|
Hi all,
I ordered a LIPO battery from evilbay for a really good price, half expecting it to never arrive... But it did, I The page said about 3 amps at 12v, I plan to use this for SOTA but I was a little wary of the voltage, so I checked it and surely enough It only puts out 10v :( will this be enough for the little bitx? or does it need the rated 12?
Cheers and 73!
ZL4BEN
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Re: 10 turn pot $1 to way too much
I had mine from Conrad, price was about 10 euro at the time. Yes it's more
expensive but i.m.o. it's definitely worth the money.
Try a Mexican first and then a Vishay and you'll understand.
Try conradelektronik.dk, Art. nr.: 429333
73 Allard PE1NWL
toggle quoted message
Show quoted text
On Sun, May 28, 2017 00:02, OZ9AEW wrote: with the price for a VISHAY here in Denmark I think you have tried the
cheap Mexico first !!!!!!!
36 USD exclude shipping
|
Re: W8TEE TFT/VFO Board from FDIM talk
I just placed my first order with Tayda on the 22nd and got it from Colorado? today (27th).
|
Re: 10 turn pot $1 to way too much
with the price for a VISHAY here in Denmark I think you have tried the cheap Mexico first !!!!!!!
36 USD exclude shipping
|
Re: 10 turn pot $1 to way too much
I first had a cheap BOURNS pot, it worked OK but requires more "torque" to spin the shaft.
Then I switched to a wirewound VISHAY pot, it's more expensive but it's definitely worth the money!
The VISHAY pot turns very lightly, you can spin the knob with just one finger just like the tuning knob of a commercial rig.
With the cheap BOURNS pot I needed two fingers and more force to turn the knob.
As the tuning knob is the most important control of any rig I wouldn't make comprises and go for the VISHAY.
See datasheet attached.
73 Allard PE1NWL
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Raj vu2zap
Ken T VK2HXX
Bob
Willy
Allard PE1NWL
Bob Benedict, KD8CGH