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?I finally put on my low pass filter for 160 on thingiverse.?? ?This was my original post here.? /g/BITX20/message/77231??Obviously this is a design that you need to hook between the radio and antenna when using 160 and remove for other bands. It seems like such a simple thing that Ashar might include as a kit and auto switch it. I am sure it could be made more compact with toroids although I was surprised at how compact it is even with air core. -- 73 Dave
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Dave, the main reason why I had to skip the LPF was the lack of extra pins on the Arduino. I have never operated the top band though i am very intrigued by it. - f
?I finally put on my low pass filter for 160 on thingiverse.??
?This was my original post here.?/g/BITX20/message/77231?
?Obviously this is a design that you need to hook between the radio and antenna when using 160 and remove for other bands.
It seems like such a simple thing that Ashar might include as a kit and auto switch it. I am sure it could be made more compact with toroids although I was surprised at how compact it is even with air core.
--
73
Dave
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Hi Ashhar,?
I have used 160 twice on"work all states" type of nets,?this spring before they quit for the season. I got 11 contacts from as far away as about 1200 miles.? Running a multi wavelength loop and it is generally quiet.? Using my V3.? Many hams on those nets ran power, but I got respect.
Hopefully others have ran 160 on ubitx .
73
Dave
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awesome. i heard doug demaw was a great 160m operator. he built many 160m qrp rigs. at times, i want to build a cw twin set (separate tx and rx) with the mandatory 10 watts output. all vfo, all cw. i guess it would be fun to see where analog takes us in this age. - f
On Tue, May 12, 2020 at 10:37 PM _Dave_ AD0B < davesters@...> wrote: Hi Ashhar,?
I have used 160 twice on"work all states" type of nets,?this spring before they quit for the season. I got 11 contacts from as far away as about 1200 miles.? Running a multi wavelength loop and it is generally quiet.? Using my V3.? Many hams on those nets ran power, but I got respect.
Hopefully others have ran 160 on ubitx .
73
Dave
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That would be classic. I already have the harmonic filter. hihi
--
73
Dave
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Hi Farhan from South-East a ways.
Bill N2CQR (he of SolderSmoke) would be a good Elmer: Fully capable both Digital and Analog, enthusiastic Constructor and collaborator.
My 2p-worth: Analog hardware is becoming rare, best sourced from junkboxes and swap-meets.
73,
Dex, ZL2DEX
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Dex, the good thing about analog is that you can always improvise. as long as transistors, capacitors, crystals? and resistors are available, analog radios will continue to educate, edify and entertain us. vfo tuning mechanisms are getting tougher to find. but PTOs made from screws are very robust and very stable. have you see dan tayloe's high performance cw transceiver? - f?
On Wed, May 13, 2020 at 1:51 AM Dexter N Muir < dexy@...> wrote: Hi Farhan from South-East a ways.
Bill N2CQR (he of SolderSmoke) would be a good Elmer: Fully capable both Digital and Analog, enthusiastic Constructor and collaborator.
My 2p-worth: Analog hardware is becoming rare, best sourced from junkboxes and swap-meets.
73,
Dex, ZL2DEX
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You are missing a lot of fun Farhan Regards
On Tue, May 12, 2020 at 2:13 PM Ashhar Farhan < farhanbox@...> wrote: Dave, the main reason why I had to skip the LPF was the lack of extra pins on the Arduino. I have never operated the top band though i am very intrigued by it. - f
?I finally put on my low pass filter for 160 on thingiverse.??
?This was my original post here.?/g/BITX20/message/77231?
?Obviously this is a design that you need to hook between the radio and antenna when using 160 and remove for other bands.
It seems like such a simple thing that Ashar might include as a kit and auto switch it. I am sure it could be made more compact with toroids although I was surprised at how compact it is even with air core.
--
73
Dave
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dan tayloe's high performance cw transceiver?
have not heard of it. Details?
Jack, W8TEE
On Tuesday, May 12, 2020, 4:41:28 PM EDT, Ashhar Farhan <farhanbox@...> wrote:
Dex, the good thing about analog is that you can always improvise. as long as transistors, capacitors, crystals? and resistors are available, analog radios will continue to educate, edify and entertain us. vfo tuning mechanisms are getting tougher to find. but PTOs made from screws are very robust and very stable. have you see dan tayloe's high performance cw transceiver? - f?
On Wed, May 13, 2020 at 1:51 AM Dexter N Muir < dexy@...> wrote: Hi Farhan from South-East a ways.
Bill N2CQR (he of SolderSmoke) would be a good Elmer: Fully capable both Digital and Analog, enthusiastic Constructor and collaborator.
My 2p-worth: Analog hardware is becoming rare, best sourced from junkboxes and swap-meets.
73,
Dex, ZL2DEX
--
Jack, W8TEE
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Jack,
Scroll down and read through the pacificon pdf
dan tayloe's high performance cw transceiver?
have not heard of it. Details?
Jack, W8TEE
On Tuesday, May 12, 2020, 4:41:28 PM EDT, Ashhar Farhan < farhanbox@...> wrote:
Dex, the good thing about analog is that you can always improvise. as long as transistors, capacitors, crystals? and resistors are available, analog radios will continue to educate, edify and entertain us. vfo tuning mechanisms are getting tougher to find. but PTOs made from screws are very robust and very stable. have you see dan tayloe's high performance cw transceiver? - f? On Wed, May 13, 2020 at 1:51 AM Dexter N Muir < dexy@...> wrote: Hi Farhan from South-East a ways.
Bill N2CQR (he of SolderSmoke) would be a good Elmer: Fully capable both Digital and Analog, enthusiastic Constructor and collaborator.
My 2p-worth: Analog hardware is becoming rare, best sourced from junkboxes and swap-meets.
73,
Dex, ZL2DEX
--
Jack, W8TEE
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Hi Farhan:
Very nice! BTW, after you mentioned the Bach book I looked into buying one. $103! So I went on eBay and bought a used copy for $8. Got it today and started reading it. I think I'm gonna like it!
Please stay safe and well, my friend!
Jack, W8TEE
On Wednesday, May 13, 2020, 4:43:54 PM EDT, Ashhar Farhan <farhanbox@...> wrote:
Jack,
Scroll down and read through the pacificon pdf
dan tayloe's high performance cw transceiver?
have not heard of it. Details?
Jack, W8TEE
On Tuesday, May 12, 2020, 4:41:28 PM EDT, Ashhar Farhan < farhanbox@...> wrote:
Dex, the good thing about analog is that you can always improvise. as long as transistors, capacitors, crystals? and resistors are available, analog radios will continue to educate, edify and entertain us. vfo tuning mechanisms are getting tougher to find. but PTOs made from screws are very robust and very stable. have you see dan tayloe's high performance cw transceiver? - f? On Wed, May 13, 2020 at 1:51 AM Dexter N Muir < dexy@...> wrote: Hi Farhan from South-East a ways.
Bill N2CQR (he of SolderSmoke) would be a good Elmer: Fully capable both Digital and Analog, enthusiastic Constructor and collaborator.
My 2p-worth: Analog hardware is becoming rare, best sourced from junkboxes and swap-meets.
73,
Dex, ZL2DEX
--
Jack, W8TEE
--
Jack, W8TEE
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If I read this thread correctly, the ubitx ?v6 could run on the 160 m band with the only alteration is an LPF filter? All we need is another Arduino DO to turn it on. I wonder if there are any extra DO’s if you are using a Second nano I2C and CEC software?
I also wonder if Jim and the teensy gang have considered this as an option?
It’s too early in my Ham experience to dig into the Arduino programIng, but it is certainly going on a list of modifications to consider.
--?
73
Mick VA3EPM?
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I am using 160 (or was, till mid April) with only the addition of this 160 filter. I put antenna connectors on the filter in series with the antenna for both transmit and receive. To use the radio on any other band I remove it from the circuit.?
The uBITX puts out about 20 watts on 160.?
Will say that what I did works, as was able to work ssb stations up to over 1000 miles with ubitx and 1300' loop antenna. If graphs are to believed, it was something like a .3dB loss until over 2mhz.?
--
73
Dave
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It’s always worked on 160M. ? ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Mick
Sent: Thursday, May 14, 2020 6:53 AM
To: [email protected]
Subject: Re: [BITX20] 160m filter ? If I read this thread correctly, the ubitx ?v6 could run on the 160 m band with the only alteration is an LPF filter? All we need is another Arduino DO to turn it on. I wonder if there are any extra DO’s if you are using a Second nano I2C and CEC software? I also wonder if Jim and the teensy gang have considered this as an option?
It’s too early in my Ham experience to dig into the Arduino programIng, but it is certainly going on a list of modifications to consider.
--? 73 Mick VA3EPM? -- …_. _._
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Mick,
If you're willing to hack it in, you can use the 3 digital outs to control a 2-to-4 or 3-to-8 chip, rather than directly connect to the relays.
Reed
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? So as is, when one tunes to 160M, is there any LPF selected? I would guess that if one starts at 80M and tunes down to 160M, then the 80M LPF is still in the circuit? ? Tnx, Dale W4OP
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Hi,
I had the joy of using much older gear (and still do). We had to turn off the power, open the cabinet, change some plug-in parts, close the box, and turn it back on to do a band change. And not forget to change the antenna. I use some external filters with my V3 and changing those for a band change seems trivial by comparison. I have thought about using the multiplex chips to expand the three line to (up to) eight. Those lines could be extended outside the cabinet (mine is tight) where they can control external filters, change bands in the kilowatt amp, change the antenna, and warm the coffee.
73,
Bill KU8H
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On 5/14/20 2:31 PM, MadRadioModder wrote: Very much preferred.
*From:*[email protected] [mailto:[email protected]] *On Behalf Of *Reed N
*Sent:* Thursday, May 14, 2020 12:53 PM
*To:* [email protected]
*Subject:* Re: [BITX20] 160m filter
Mick,
If you're willing to hack it in, you can use the 3 digital outs to control a 2-to-4 or 3-to-8 chip, rather than directly connect to the relays.
Reed
<> Virus-free. www.avg.com <> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
--
…_. _._
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bark less - wag more
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That's how it looks to me Dale. An 80 meter low pass filter isn't helping much with the 160 meter band until we get to that third harmonic and higher. An external filter also helps on receive :)
73,
Bill KU8H
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On 5/14/20 2:37 PM, Dale Parfitt wrote: *So as is, when one tunes to 160M, is there any LPF selected? I would guess that if one starts at 80M and tunes down to 160M, then the 80M LPF is still in the circuit?*
Tnx,
Dale W4OP
--
bark less - wag more
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We are on the same page Bill. The bitx finals are Push pull so that helps us with the 3rd 160M harmonic= 5.4- 6MHz. and up. That means a low order 160M LP elliptic filter with a zero in the 3.6-4MHz spectrum should do it. Time to spend some time in Gensys simulation/synthesis and get the spectrum analyzer on the uBitx unless someone else has already done the SA work.
Dale W4OP
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-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Bill Cromwell Sent: Thursday, May 14, 2020 3:03 PM To: [email protected]Subject: Re: [BITX20] 160m filter That's how it looks to me Dale. An 80 meter low pass filter isn't helping much with the 160 meter band until we get to that third harmonic and higher. An external filter also helps on receive :) 73, Bill KU8H On 5/14/20 2:37 PM, Dale Parfitt wrote: *So as is, when one tunes to 160M, is there any LPF selected? I would
guess that if one starts at 80M and tunes down to 160M, then the 80M LPF
is still in the circuit?*
Tnx,
Dale W4OP -- bark less - wag more
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_Dave_ AD0B
Mick
MadRadioModder