I put mine a 1/8" endmill in my mill so I'd get nice accurate, straight cuts. Then I used a file to square off the rounded corners.
Vince.
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On 09/30/2017 10:34 AM, Brent Seres wrote: Like I'm sure many others have done, I salvaged an existing project box
for mounting my bitx. Even using my Dremel tool, I always find cutting
rectangles for meters and displays a challenge to get right. Does anyone
have any ideas for trim or a bezel to go around the display to dress
things up a bit and give a bit more professional appearance?
Thanks
Brent
_._,_._,_
--
Michigan VHF Corp.
|
Whaddya mean tubes are gone?!?! My main low band rig is all tubes (old Collins KWS-1/75A-4) and I just picked up an old CB tube type amplifier that's being put back on 10 meters with an added 40, 20 and 15 as well. The tubes are sweep tubes so I have everything to switch them over from 6 volt to 22 volt filaments. Got 5 new 22v tubes for $20 instead of $40 ea for the 6v version. New filament transformer was $14.
Vince - KA8CSH.
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On 09/29/2017 09:41 PM, Michael Hagen wrote: I still have from the 60's an Octal, Nine Pin, and 7 pin Greenly Punch.
Lots of $ then for a kid.
I think over $10 back then. Lots of chassis with 5U4, 6V6, 6AQ5, ect.
Never to be used again, Valves, we called them Tubes gone like my
Generation.
So Sad, and that's the way life goes. That was a lot of money back then.
Mike, WA6ISP
On 9/29/2017 12:45 PM, Lawrence Galea wrote:
Hi John
Guess nowadays more people want to have everything as easy as possible.
Seems that gone are the days of making an aluminium chassis, drilling
all the holes for valve holders, front panel, case etc.
PCB boxes should be very easy for the newcomers to do.
Regards
Lawrence
On Fri, Sep 29, 2017 at 10:43 AM, John Backo via Groups.Io
<iam74@...
<mailto:iam74@...>> wrote:
Well Larry, I guess the times they are achangin'. Hi.
Methinks that soldering a pc box is the best solution as
it provides good shielding. It is a bit hard to work all the
necessary holes though...it does involve a bit of manual
labor. ;)
john
AD5YE
--
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."
Mike@...
--
Michigan VHF Corp.
|
Re: Another side tone question
Or send the headphones signal through another amp to the speaker when the phones aren¡¯t being used. Another LM386, or one of the many inexpensive low power class D amp modules from eBay.?
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On Sep 30, 2017, at 7:29 AM, Brent Seres < brentseres1@...> wrote: Allard's scheme works fb when using the headphones. My problem is the low side tone level when using the speaker, probably caused be the speaker impedance being much lower than the headphones. I currently have the headphone jack wired to disconnect the speaker when plugging in the headphones. I might just take the easy way out, and use a dpdt switch the back of the rig instead, switching in Allard's resistor scheme when using headphones, and switching to a separate little PC speaker for the side tone when using the speaker. Not quite as elegant,but simple.
|
Hello
Just joined the group so hello to everyone.
I have the the Hendricks Bitx20A kit.
I already built a DDS board to replace the on board VFO.
I have a simple question.
What components are needed to be removed before connecting an external DDS
to the pads, Is it just L5.
Thanks
73
KB1HKO
Laurence
|
There is another thread on here showing some examples of various bezels. I always use a nibbler to cut the square holes.
--
John - WA2FZW
|
Like I'm sure many others have done, I salvaged an existing project box for mounting my bitx. Even using my Dremel tool, I always? find cutting rectangles for meters and displays a challenge to get right. Does anyone have any ideas for trim or a bezel to go around the display to dress things up a bit and give a bit more professional appearance?
Thanks
Brent
|
Re: Another side tone question
Allard's scheme works fb when using the headphones. My problem is the low side tone level when using the speaker, probably caused be the speaker impedance being much lower than the headphones. I currently have the headphone jack wired to disconnect the speaker when plugging in the headphones. I might just take the easy way out, and use a dpdt switch the back of the rig instead, switching in Allard's resistor scheme when using headphones, and switching to a separate little PC speaker for the side tone when using the speaker. Not quite as elegant,but simple.
|
You might be better off just modifying the microphone to use an electret mic element.
Michael VE3WMB
|
Martin,
the calibration mode is normally only activated when pin A2 is connected
to ground. However this pin is normally not used.
Double-check your connections. Perhaps you have a short between pin A1
(KEY) and A2 (CAL)?
73 Allard PE1NWL
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On Sat, September 30, 2017 11:20, martin Fraser wrote: Hi all i have finally got my butt in to gear and installed my??Raduino ??i
have installed the??v1.24 software and looks great but??now the prob i
have is when i key the tx via the cw mod it resets the??Raduino?? and
shows "calibrating zero beat" any help would be great. i have tried to run
from battery??and PS also :)
73 Martin
|
Hi all i have finally got my butt in to gear and installed my?Raduino ?i have installed the?v1.24 software and looks great but?now the prob i have is when i key the tx via the cw mod it resets the?Raduino? and shows "calibrating zero beat" any help would be great. i have tried to run from battery?and PS also :)
73 Martin?
|
|
|
Lots of links Regards Lawrence
On Sat, Sep 30, 2017 at 5:57 AM, Jack Purdum via Groups.Io <jjpurdum@...> wrote: My first rig was a homebrew 15W CW transmitter that my Elmer helped my build while I waited for my Novice license in 1954. The receiver was a Hallicrafters S40. I graduated to a DX-20 as my lawn mowing business brought in some money. Sold that when I got my General (1955) and splurged on a DX-60. Been licensed continuously since 1954 and was recently shamed into upgrading to Extra.
My best ham radio investment: ARRL Life Membership in 1971 for $125.00!
Jack, W8TEE
I still have, and restore, and use, tube radios. I have a collection of antique broadcast band receivers that dates from 1921 to the 1930's, an antique (1920's) homebrew ham receiver with the callsigns of two 1920's hams on the front panel (that one needs restoration, but it has a set of coils that plug into a socket on top), and a Knight R100A/T150A pair I am working on. My first HF transceiver was a Heathkit HW101, which I still have and have no plans to get rid of as I can repair it myself if it breaks down (plus, it was given to me by my elmer as an incentive to upgrade to General years ago...).?
Real radios glow in the dark and are warm to cuddle up to! :)
Rich KC8MWG
Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone -------- Original message -------- From: Michael Hagen < motdog@...> Date: 9/29/17 9:41 PM (GMT-05:00) To: [email protected] Subject: Re: [BITX20] 3d printers
I still have from the 60's an Octal, Nine Pin,
and 7 pin Greenly Punch.? Lots of $ then for a kid.
I think over $10 back then.? Lots of chassis with
5U4, 6V6, 6AQ5, ect.
Never to be used again, Valves, we called them
Tubes gone like my Generation.
So Sad, and that's the way life goes.? That was a
lot of money back then.
Mike, WA6ISP
On 9/29/2017 12:45 PM, Lawrence Galea
wrote:
Hi John
Guess nowadays more people want to have everything as easy as
possible.
Seems that gone are the days of making an aluminium
chassis, drilling all the holes for valve holders, front
panel, case etc.?
PCB boxes should be very easy for the newcomers to do.
Regards
--
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."
Mike@...
|
You might want to reconsider, Francesca - try FETs with Megohm impedances (pseudo-hollow-state?)- and even ordinary transistors go well below 500 ohms in common-base configuration.
|
I used a Icom Hm36 element into old old 4 pin micphone, Works very well. All solid state input impedance? are 500-600. I did add a 10k variable? potential? to adjust the gain
Lady Francesca W7ltg
--
Sent from Hotmail Email App for Android
Friday, 29 September 2017, 09:22PM -07:00 from kbgluxford@...:
I have Farhan's BITX40 V3 kit.? I am wondering if I can use my vintage Geloso dynamic microphone with it.? I know that I would have to use a capacitor to block the DC for electret mics, however the dynamic mic output is probably too low, and would have to be boosted.? Could Farhan tell me the input impedance of the microphone amplifier input, so I can decide whether a dynamic mic transformer (Lo Z to Hi Z as for driving a tube control grid) would be OK or whether I would have to use an external transistor amplifier.? Many thanks in advance. Kevin VK3DAP / ZL2DAP
--
I have ?bitx40 ?and completely wired up. get nice hiss when the volume up. display lights up only showing Raduino V1.01. ?frequency never shown, anyone have that problem? ?i think the software is not in the chip.
Francesca W7LTG ? NV?
|
I have Farhan's BITX40 V3 kit.? I am wondering if I can use my vintage Geloso dynamic microphone with it.? I know that I would have to use a capacitor to block the DC for electret mics, however the dynamic mic output is probably too low, and would have to be boosted.? Could Farhan tell me the input impedance of the microphone amplifier input, so I can decide whether a dynamic mic transformer (Lo Z to Hi Z as for driving a tube control grid) would be OK or whether I would have to use an external transistor amplifier.? Many thanks in advance. Kevin VK3DAP / ZL2DAP
|
My first rig was a homebrew 15W CW transmitter that my Elmer helped my build while I waited for my Novice license in 1954. The receiver was a Hallicrafters S40. I graduated to a DX-20 as my lawn mowing business brought in some money. Sold that when I got my General (1955) and splurged on a DX-60. Been licensed continuously since 1954 and was recently shamed into upgrading to Extra.
My best ham radio investment: ARRL Life Membership in 1971 for $125.00!
Jack, W8TEE
From: Richard Andrew Knack via Groups.Io <ihc73scout2@...>
To: [email protected]
Sent: Friday, September 29, 2017 10:55 PM
Subject: Re: [BITX20] 3d printers
I still have, and restore, and use, tube radios. I have a collection of antique broadcast band receivers that dates from 1921 to the 1930's, an antique (1920's) homebrew ham receiver with the callsigns of two 1920's hams on the front panel (that one needs restoration, but it has a set of coils that plug into a socket on top), and a Knight R100A/T150A pair I am working on. My first HF transceiver was a Heathkit HW101, which I still have and have no plans to get rid of as I can repair it myself if it breaks down (plus, it was given to me by my elmer as an incentive to upgrade to General years ago...).?
Real radios glow in the dark and are warm to cuddle up to! :)
Rich KC8MWG
Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone -------- Original message -------- From: Michael Hagen <motdog@...> Date: 9/29/17 9:41 PM (GMT-05:00) To: [email protected] Subject: Re: [BITX20] 3d printers
I still have from the 60's an Octal, Nine Pin,
and 7 pin Greenly Punch.? Lots of $ then for a kid.
I think over $10 back then.? Lots of chassis with
5U4, 6V6, 6AQ5, ect.
Never to be used again, Valves, we called them
Tubes gone like my Generation.
So Sad, and that's the way life goes.? That was a
lot of money back then.
Mike, WA6ISP
On 9/29/2017 12:45 PM, Lawrence Galea
wrote:
Hi John
Guess nowadays more people want to have everything as easy as
possible.
Seems that gone are the days of making an aluminium
chassis, drilling all the holes for valve holders, front
panel, case etc.?
PCB boxes should be very easy for the newcomers to do.
Regards
--
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID "MotDog@..."
Mike@...
|
I have spent countless hours down in my shop making chassis,
boxes, and all sorts of housing for my projects over the years.? I
have just about everything I could need to cut, drill, bend,
machine, and weld any type of housing I want.? I? have even cast
my own parts in aluminum for some projects.? Since I got a 3D
printer and learned the design software to go with it, I really
don't want to go back.? Now I can design a complete package for my
projects that include things like mounting posts for circuit
boards,? display bezels, all the holes for controls and switches.?
Before, if I needed to make a change in a project case, it was
back to the shop? for possibly hours to drill or whatever it took
to modify what I had already done, or worse start over.? Now it is
usually a matter of a few minutes making the change on the
computer and sending that file to the printer that sits next to my
desk.? A couple hours later it is ready to be taken out of the
printer and assembled.? Even if I have to make changes and print
several trial pieces, the cost of materials is usually less than
$0.50 in materials for most of my projects.? I also have designed
several corner pieces that I print in various lengths for use with
PCB material if I need to make a larger box. No more trying to get
corners to line up nice a square when you solder them together.? I
attached a picture of a case I printed today for one of my ongoing
projects.? It has built in PCB mounting posts, a bezel for the
display,? holes for the controls, RF connectors , and switches.?
And if I want another one I just send the file to the printer and
print as many as I need.
73's DuWayne KV4QB
From: Lawrence
Galea
Date: Fri, 29 Sep 2017 15:45:51 EDT
Hi John
Guess nowadays more people want to have everything as easy as
possible.
Seems that gone are the days of making an aluminium chassis,
drilling all the holes for valve holders, front panel, case
etc.?
PCB boxes should be very easy for the newcomers to do.
Regards
-- DuWayne? KV4QB
|
Pat: to smell the dung, and the petrol/diesel fumes of the rest of the world whizzing past. :)
|
Tell it to the young'uns! Better still, stoke them rigs up as they visit. The 'petrol-heads' drool over a big V8 screeching away from the lights - I treasure a visit to a Hamshack where he stoked up 600W open-chassis on 2m driving 4x10-el pointed straight up, just to witness the cherry-red bottles glowing. He must have had dispensation for EME - legal limit was 150W IIRC. Then ZL2AFZ chatting by morse on a rig barely audible in the background and hand waffling the paddle on the desk, at the same time as to me standing beside his chair, to someone in LA just about to head off out to get his wife a banana split (midnight his time where here in NZ everything shut? by about 7pm - culture shock!). *That's* Ham Radio!
73 de ZL2DEX
|
If you can use a car why bother commuting in a bullock cart.?
73ees Pat
On Sat, Sep 30, 2017 at 1:16 AM, Lawrence Galea <9h1avlaw@...> wrote: Hi John Guess nowadays more people want to have everything as easy as possible. Seems that gone are the days of making an aluminium chassis, drilling all the holes for valve holders, front panel, case etc.? PCB boxes should be very easy for the newcomers to do. Regards
|
Smitty, N6MTS
Brent Seres/ VE3CUS
Allard PE1NWL
DuWayne Schmidlkofer
Patrick Pugh Sawian