Re: Inexpensive eBay Amplifier Kits
Since it's not a kit, it's subject to FCC certification. Is the amp certified?
Jack, W8TEE
On Tuesday, May 14, 2019, 8:43:19 AM EDT, Jay - WS4JM <ws4jm@...> wrote:
Although it is not a kit, I picked up one of these at a hamfest.
Been having good luck with it, gets good reports. I dialed back the uBitx output to around 3.5W on 40 meters and get about 40W out.
Jay
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Re: Inexpensive eBay Amplifier Kits
I built the 70w version of that amplifier. ?The instructions are pretty much just a schematic with a few mistakes on it but it's not very hard to figure out what goes where. ?I made some initial contacts with it connected to my FT-817 and a 40m filter on the output. ?A few people said that my audio was a little distorted. ?After doing some searching online it's been suggested to increase the bias by 1v. ?I have not tried that yet but the guy's reasoning sounded logical. ?It's a fun little kit to build.
With the Bitx radios you would have to get just a little creative to trigger the TX/RX relay but that shouldn't be very difficult.
Curt M.
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Re: Dave West --PLEASE DELETE
Quel est le rapport avec l'uBitx ? Olivier.
I don't require an apology, so not accepted. Was nothing wrong with the photo that I saw. Accidents happen. Like my HP laptop keyboard. If I begin typing too fast and pressing the keys too hard windows begin popping open or weird characters begin showing on the screen that I didn't type. I need to stop talking about this lousy laptop and transfer everything to my other laptop, a Dell Latitude. Nice looking Gent. Wish I could say the same for me. I look in the mirror every morning... ugh. Terry - KB8AMZ Brimfield Twp, OH USA EN91hd Linux User# 412308, Ubuntu User# 34905,?PCARS#78, NAQCC#6668, QRP-ARCI#8855, SKCC#14195
Yes! I was emailing a photo of my great-grandfather to a nephew,
and my email program said it sent the photo to this group, too! I
don't know what happened, but I'm glad it didn't show up here.
On 5/12/2019 7:03 PM, Arv Evans wrote:
Donald
Seems
that the photo did not come through.? Maybe a good thing...?
Arv
_._
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Re: Inexpensive eBay Amplifier Kits
Although it is not a kit, I picked up one of these at a hamfest.
Been having good luck with it, gets good reports. I dialed back the uBitx output to around 3.5W on 40 meters and get about 40W out.
Jay
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Re: Dave West --PLEASE DELETE
I don't require an apology, so not accepted. Was nothing wrong with the photo that I saw. Accidents happen. Like my HP laptop keyboard. If I begin typing too fast and pressing the keys too hard windows begin popping open or weird characters begin showing on the screen that I didn't type. I need to stop talking about this lousy laptop and transfer everything to my other laptop, a Dell Latitude. Nice looking Gent. Wish I could say the same for me. I look in the mirror every morning... ugh. Terry - KB8AMZ Brimfield Twp, OH USA EN91hd Linux User# 412308, Ubuntu User# 34905,?PCARS#78, NAQCC#6668, QRP-ARCI#8855, SKCC#14195
Yes! I was emailing a photo of my great-grandfather to a nephew,
and my email program said it sent the photo to this group, too! I
don't know what happened, but I'm glad it didn't show up here.
On 5/12/2019 7:03 PM, Arv Evans wrote:
Donald
Seems
that the photo did not come through.? Maybe a good thing...?
Arv
_._
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Hi Nick I 'll take 3 thanks?
Sent from my Samsung Galaxy smartphone.
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-------- Original message -------- From: Nick VK4PP <nickpullen@...> Date: 14/05/2019 02:59 (GMT+00:00) Subject: Re: [BITX20] VK4PP Ultimate uBitx Daughter Board. #ubitx #filters #parts
Hi everyone. Thanks for the interest. I will put all of you that have responded and emailed me at the top of the list... I will try to get this done ASAP, but I have very little time lately with work and life, but I will try... The design is mostly done, but I want to do this one with some decent documentation, and schematics too. Thanks again. 73 Nick VK4PP
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Re: Inexpensive eBay Amplifier Kits
Hello ! Maybe there :? Regards ! Olivier.
Do you happen to have a source/part number for the heat sink?
Thanks.
Bill KC1JTS
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Re: Dave West --PLEASE DELETE
He did say he deleted it!
At 14-05-19, you wrote:
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Curious, I did see the photo in
the group website.
Looks like it has since been deleted.
Jerry
On Mon, May 13, 2019 at 11:54 AM, Vince Vielhaber wrote:
- Arv, I don't look at the group on the web unless I'm searching for
something. The pic came as an email attachment.
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newoldham wrote : "I base this on the fact that AM radio is, in fact, crystal clear."
What kind of antenna are you using? My own experience was that with a long-wire antenna there was lots of BC interference. (I am about 10 km from an AM broadcast transmitter site, with more of them slightly further away). When I switched to using a dipole for 40 m or my multi-band tuned vertical, all the broadcast interference disappeared.
73,
... Martin VE3OAT
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Re: Look at this on eBay, ubitx, budget test equipment.
I use an innova 3320 dvm; it showed up in an issue in QST some months back. Its good for what it does.?
73,?
Kelly K5AID?
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Re: Look at this on eBay, ubitx, budget test equipment.
Did you use 1 watt resistors or higher? I am assuming qrp levels similar to our ubitx, of course..
73,
Kelly K5AID?
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Re: Look at this on eBay, ubitx, budget test equipment.
I am with Robert, a decent dvm is the first cab off the rank.? I sold my oscilloscope on ebay as I found that while useful when needed, it wasn't needed very often and a digital one could do the job. I have a Heathkit signal generator.? Rarely use it and don't see it as a first purchase.? VK5JST sells an antenna analyzer kit.? It has good reviews and I find it quite accurate compared to the MFJ analyzer.? BTW if you are not peaked with an antenna tuner your UBitx may not hear anything.....I thought mine had failed but it turned out to be tuning. The audio is not very strong at best without enhancement.? Good Luck. Jeff VK3GMO?
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Hi everyone.
Thanks for the interest. I will put all of you that have responded and emailed me at the top of the list...
I will try to get this done ASAP, but I have very little time lately with work and life, but I will try...
The design is mostly done, but I want to do this one with some decent documentation, and schematics too.
Thanks again.
73 Nick VK4PP
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Re: Needed a break, so thought I would make AD7C's VFO
I attribute it to my assumptions, obviously. I was shocked myself after all the positive remarks, etc. I am glad it works as I was wanting to experiment with it, like make a receiver for my dad, who is not a ham, but loves to listen to my radios as i grew up...especially the kenwood ts520 he got after i got my Advanced license.
73,
Kelly K5AID?
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Re: Dave West --PLEASE DELETE
I don't recall ever seeing attachments on this mailing list. Perhaps they are removed before sending to subscribers?
Signed?
G.
Yes! I was emailing a photo of my great-grandfather to a nephew,
and my email program said it sent the photo to this group, too! I
don't know what happened, but I'm glad it didn't show up here.
On 5/12/2019 7:03 PM, Arv Evans wrote:
Donald
Seems
that the photo did not come through.? Maybe a good thing...?
Arv
_._
|
Re: Inexpensive eBay Amplifier Kits
Do you happen to have a source/part number for the heat sink?
Thanks.
Bill KC1JTS
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Re: Needed a break, so thought I would make AD7C's VFO
That's interesting, i have based 5 different VFO's off of the schematic Rich provided on his Blog and all of them worked perfect. I have a DSB radio I designed around this VFO and use it all the time. I'm not sure what was wrong with it.
Joel
N6ALT
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Re: Look at this on eBay, ubitx, budget test equipment.
10dB sounds a little more reasonable for measuring RF. I made up a
batch of PI network attenuators for 3, 6, 10, and 12dB.
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On Mon, May 13, 2019 at 7:09 PM Kelly Mabry <kmabry2007@...> wrote:
Richard, thanks for reminding me abiut the attenuator. You sure thats enough? I was figuring 10dB. According to the Resistor tables for a Pi it seems easier. Just my own opinion...
73,
Kelly K5AID
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Re: Look at this on eBay, ubitx, budget test equipment.
Richard, thanks for reminding me abiut the attenuator. You sure thats enough? I was figuring 10dB. According to the Resistor tables for a Pi it seems easier. Just my own opinion...
73,?
Kelly K5AID?
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Olivier Grand
Jay - WS4JM
Terry Morris
Raj vu2zap
Nick VK4PP
Joel Caulkins/N6ALT