yea i lost my patience for QRP! ?Maybe some years down the road.
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But gained status as a hacker! Nice work. ?Any pics or details?
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-------- Original message -------- From: Arv Evans <arvid.evans@...> Date: 07/01/2017 4:50 PM (GMT-08:00) To: [email protected] Subject: Re: [BITX20] More power But you have certainly lost your status as a QRP'er.
8-(
_._
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Re: USB Panel Mount Extension Cable
This connector is the same as the connector on Arduino Uno. -----Mensaje original----- From: John Sutter Sent: Thursday, June 29, 2017 8:54 PM To: [email protected]Subject: Re: [BITX20] USB Panel Mount Extension Cable I had looked at that one, but the fit wasn't quite right, delivery time didn't meet my need for instant gratification, etc... :-) I've had my cable installed since April and have been pretty happy with it though I do have an extra hole to plug one of these days. On 6/29/2017 4:27 PM, Andrew Krause wrote: 50cm USB 2.0 B female panel mount to mini 5pin male right angle extension cable
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Re: Fw: [BITX20] Bitx TFT display code
I bought the wrong one off Aliexpress as well. Fortunately I had a $20 voucher from eBay I used and bought the correct one for the voucher + $5 postage off eBay. Just waiting on the AD9850 type2 from Aliexpress and the MAR-3SM off eBay
Adrian VK4KL
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But you have certainly lost your status as a QRP'er.
8-(
_._
On Sat, Jul 1, 2017 at 5:44 PM, Steve Greer <km4ous@...> wrote: I took the final and filter section from a non-working Kenwood TS-440 and I am driving it from my bitx for 200+ watts output.? I get heard pretty well.
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I took the final and filter section from a non-working Kenwood TS-440 and I am driving it from my bitx for 200+ watts output. ?I get heard pretty well.
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On Sun, July 2, 2017 00:13, chris gress wrote: I don't know any hams around here that I could ask or I would get someone
to do a 60m one for me I know nothing about code for these is there info
somewhere to connect all the extra buttons thanks All info about the software and related buttons, modifications, etc. can be found at But those buttons will only work if you install the related software, so you need a PC or help from someone else to install it for you. 73 Allard PE1NWL
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I don't know any hams around here that I could ask or I would get someone to do a 60m one for me I know nothing about code for these ?is there info somewhere to connect all the extra buttons thanks
On 1 Jul 2017 22:54, "Allard PE1NWL" < pe1nwl@...> wrote: On Sat, July 1, 2017 22:01, chris gress wrote:
> I don't have a PC so my bitx 40's dds is how I got it
> from India
Ah I see...
Isn't there a fellow ham in your neighbourhood with a PC who could install
the latest software for you? It would allow you to extend the tuning range
plus it will enable many other features such as dual VFO, RIT, CW, etc.
73 Allard PE1NWL
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On Sat, July 1, 2017 22:01, chris gress wrote: I don't have a PC so my bitx 40's dds is how I got it
from India Ah I see... Isn't there a fellow ham in your neighbourhood with a PC who could install the latest software for you? It would allow you to extend the tuning range plus it will enable many other features such as dual VFO, RIT, CW, etc. 73 Allard PE1NWL
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I have a 10turn pot for tuning I still need the 2 buttons to cover the band I changed the wiring so I can jump up or down 100kc with out been at the end of the pot run ? I don't have a PC so my bitx 40's dds is how I got it from India?
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Re: Spurious RF at beginning of transmission
hi
my way of generating cw is a completely separate cw transceiver.
terry gm4dso
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hi
what is this kcunk. i have a unmodified bitx40 and i fail to hear a kchunk when i switch to tx. is it anything to do with the cw mod. i am on v 1.15
terry gm4dso
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On Sat, Jul 1, 2017 at 09:29 am, Andrew Krause wrote:
Tuning the BITX 40 can be tricky and cumbersome with the stock tuning method
Not if you replace the stock 1-turn tuning pot by a 10-turn pot. Then you can tune over a wide range and you won't need the "anti-galopping" mod involving two extra buttons. 73 Allard PE1NWL
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I would recommend three right off the bat. You'll need one for push-to-talk. I strongly recommend just doing the galloping VFO fix with +/- tune buttons right away. Tuning the BITX 40 can be tricky and cumbersome with the stock tuning method.?
If you plan to do the rotary encoder mod, however, then you might leave those two holes out and live with it for now.?
On Sat, Jul 1, 2017 at 12:17 PM, Keith VE7GDH <ve7gdh@...> wrote: I have my (first) BITX40 and the case (actually two for some unknown reason) arrived the other day. I have yet to hay-wire it together so I can play with it (hopefully today) but I'm trying to do some planning for the case. With all of the various mods available, how many push-buttons should I plan on for on the front of the case?
--
73 Keith VE7GDH
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Andrew KrauseGeneral Class Amateur Radio License: KM4ZJO
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I think
function button?
key/atu
spot
Optional
on/off
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I have my (first) BITX40 and the case (actually two for some unknown reason) arrived the other day. I have yet to hay-wire it together so I can play with it (hopefully today) but I'm trying to do some planning for the case. With all of the various mods available, how many push-buttons should I plan on for on the front of the case?
--
73 Keith VE7GDH
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I got my boards here:
Rich
On Saturday, July 1, 2017, 11:31:12 AM EDT, Jorge Luiz Fenerich <py2pvt@...> wrote:
? ? ??Thanks Mike, good weekend.73? ? ? Jorge
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LOL! It may be a few months before it is completely finished, though HOPEFULLY before the end of the year. Some of the originally specified parts are obsolete (or require an order minimum of 200 parts!) and I am looking for subsititutes. Also trying to spread the cost out over time. I have a big order for the majority of the parts on the way from Mouser, and a couple of boost converters (one of which will provide the parts needed for the extra fitering) on their way from an EBay seller. Still have to order an enclosure and a heat-sink, though.
Rich KC8MWG
On Saturday, July 1, 2017, 11:44:28 AM EDT, Andrew Krause <andrew.krause@...> wrote:
When you're done, send me a pic. I'm going to caption it with "YOU MANIACS! YOU BLEW IT UP!"
Seems apropos...
(Planet of the Apes reference...)
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When you're done, send me a pic. I'm going to caption it with "YOU MANIACS! YOU BLEW IT UP!"
Seems apropos...
(Planet of the Apes reference...)
On Sat, Jul 1, 2017 at 11:34 AM, Richard Andrew Knack via Groups.Io <ihc73scout2@...> wrote: I plan to incorporate a 150 watt boost converter into the amplifier to provide 28V (with additional filtering, if needed), so that I can get the full 40 watts output. I mainly want to use the amp for SSB anyway, since CW (which I never use anyway) and digital generally work reasonably well on QRP anyway. And yes, I plan to use the extra resistor so that it reduces 5watts input to 1 watt, as I want to use it wit not just my Bitx40 (which I have not completed yet), but also my Xiegu X1M Platinum which seems to operate at a fixed 5 watts output. No such problem using it with my mcHF, as I can set the power for anywhere from a half watt up to a max of 8-10 watts (depending on the band), but it will be nice to set it for 5 watts and run it into the amp for sideband use. One of our club members gave me the original QST magazines with the build article (part 1 and 2), so I am set there.
Rich KC8MWG
Hi Rich,
The "part 2" of the QST article on the WA2EBY amp notes that you can set a resistor pad up for 5 W input to the original 1 W input that WA2EBY's amp is designed for, but you waste 4 W in that pad so the amp is still driven with 1 W and you still get the designed ~20 W out using 13.8 V DC.? Are you making a more extensive modification to get more power out?
(Of course, you can get more out of the amp with 28 V drive, up to 70 W with appropriate heat sinking - see Figure 7 of the Part 2 article available at ).
It seems also important to note that the amp is designed for CW/SSB operation only and not digital, because you just can't sink away the heat and not destroy the finals.? In the thermal calculation section, he writes:
"These [thermal] calculations make it clear that the amplifier should not be used for AM, FM or any other continuous-carrier operation. The amplifier should be used only for CW and SSB operation where the duty cycle is significantly reduced."
73
Phil W1PJE
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Andrew KrauseGeneral Class Amateur Radio License: KM4ZJO
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I plan to incorporate a 150 watt boost converter into the amplifier to provide 28V (with additional filtering, if needed), so that I can get the full 40 watts output. I mainly want to use the amp for SSB anyway, since CW (which I never use anyway) and digital generally work reasonably well on QRP anyway. And yes, I plan to use the extra resistor so that it reduces 5watts input to 1 watt, as I want to use it wit not just my Bitx40 (which I have not completed yet), but also my Xiegu X1M Platinum which seems to operate at a fixed 5 watts output. No such problem using it with my mcHF, as I can set the power for anywhere from a half watt up to a max of 8-10 watts (depending on the band), but it will be nice to set it for 5 watts and run it into the amp for sideband use. One of our club members gave me the original QST magazines with the build article (part 1 and 2), so I am set there.
Rich KC8MWG
On Saturday, July 1, 2017, 11:17:03 AM EDT, <phil.erickson@...> wrote:
Hi Rich,
The "part 2" of the QST article on the WA2EBY amp notes that you can set a resistor pad up for 5 W input to the original 1 W input that WA2EBY's amp is designed for, but you waste 4 W in that pad so the amp is still driven with 1 W and you still get the designed ~20 W out using 13.8 V DC. ?Are you making a more extensive modification to get more power out?
(Of course, you can get more out of the amp with 28 V drive, up to 70 W with appropriate heat sinking - see Figure 7 of the Part 2 article available at ).
It seems also important to note that the amp is designed for CW/SSB operation only and not digital, because you just can't sink away the heat and not destroy the finals. ?In the thermal calculation section, he writes:
"These [thermal] calculations make it clear that the amplifier should not be used for AM, FM or any other continuous-carrier operation. The amplifier should be used only for CW and SSB operation where the duty cycle is significantly reduced."
73
Phil W1PJE
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CX8ABF Carlos Molina
Allard PE1NWL