Re: BITX17
Dear Ashhar,
It is an honour to me to chat to the designer of the bitx ! Compliments for the extensive info on the internet. I like the KISS (keep it simple stupid) principle a lot. I appreciate all
By
Ron Brink <pa2rf@...>
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#518
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Re: Stability?
Ron
In case you are not aware of my very simple Huff & Puff VFO stabiliser
designs, you can read about them
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Hans Summers <Hans.Summers@...>
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#517
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Re: Stability?
I really appreciate your quick reply Raj,
No you did not confuse me.
This forum is alive !
Yes I used the ceramic ones for initial trails. I have some polysterene ones (old!! from Philips radios) in
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Ron Brink <pa2rf@...>
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#516
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Stability?
Ron,
This is probably because of ceramic capacitors being used the oscillator stages. Components that determine frequency must be ultra-stabe. Use NP0 caps, brown ceramics with a black top.
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Raj <ggrk@...>
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#515
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From the mouths of babes...
i was fooling around with a direct conversion receiver in my shack today when my four year old daughter came in with her friends to play 'wheelie train' (a noisy sport where each participant sits in
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Ashhar Farhan <farhan@...>
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#514
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Re: BITX17
the 1 Khz drift is more of a construction problem that a design problem.
I would suggest that you try the following:
1. make all the components connect to each other with short leads and without any
By
Ashhar Farhan <farhan@...>
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#513
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Re: BITX17
Thanks for advice dear Chris,
Saw on the forum that the BITX17 already seems to exist!
OK, past couple of days I started to setup the power supply unit
capable of delivering the required
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pa2rf <pa2rf@...>
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#512
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Re: BITX17
Dear Ron,
splended idea to make it for 17 mtrs.
In your message you asked for suggestions, you want to have more
suggestions then all the postings in this newsgroup, including
Photos, Files
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Chris van den Berg
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#511
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BITX17
Dear bitx20 homebrewers,
I intend to build the BITX for the 17m WARC band (18.068-18.168 MHz). My ultimate goal will be to work psk31 with this splendid rig. Has anyone suggestions to convert bitx20
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Ron Brink <pa2rf@...>
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#510
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New file uploaded to BITX20
Hello,
This email message is a notification to let you know that
a file has been uploaded to the Files area of the BITX20
group.
File : /MFJ-9420-CW-module-1.gif
Uploaded by : vu3wjm
By
BITX20@...
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#508
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Re: Full QSK?
HI! Farhan and friends,
With BITX having become so popular CW operations I assume was simply matter of time. Over years many kits have evolved the same route.
Among the commercial products Travel
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Rahul Srivastava <vu3wjm@...>
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#507
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Full QSK?
How does one go about with full QSK on BITX20?
There is very little switching around.
the most crucial point to me is that the receiver input needs to switch from the linear amp's output to input.
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Ashhar Farhan <farhan@...>
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#506
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Re: BITX 20 Ver 2 PCB tested
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Alex <oz2afy@...>
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#505
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Re: Assembling Far bitx boards
paul,
the PCBs have been printed component side! to mark the correct side, i had put the letters BITX in the middle of the PCB as a reminder so that it reads properly.
I guess the fault is partly
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Ashhar Farhan <farhan@...>
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#504
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Assembling Far bitx boards (fwd)
---------- Forwarded message ----------
Date: Sun, 23 Jan 2005 13:43:05 -0500 From: paul daulton <k5wms@...>
To: farhan@...
Cc: farcir@...
Subject: Assembling Far bitx
By
Ashhar Farhan <farhan@...>
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#503
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BITX 20 Ver 2 PCB tested
Hi!
Here we have completed 2 BITX 20s. We used the ver. 2 layout for
PCB. PCB is thankfully without any mistakes however Pin 2 of LM386
also needs to be grounded to ground plain nearby to avoid
By
vu3wjm <vu3wjm@...>
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#502
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Re: request regarding tap washer.
Kumar
Please see message 102: http://groups.yahoo.com/group/BITX20/message/102 for
some details of the tap washer I used. I bought some samples of ordinary
"1/2-inch" tap washers and "delta" tap
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Hans Summers <Hans.Summers@...>
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#501
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request regarding tap washer.
hello,
any one help me for bitx-20 tap-washer, it's size ,
it's thikness and it's inner and outer length.
if any one have details in this regard then please
help me.
with 73's
de kumar
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kumar gautam <fromgautam@...>
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#500
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Re: Almost finishet BitX
What you also can do after following the advice of Arv, is combining
the tap washers to a bigger thickness. If the diameter differs a lot
from the normal dimension, it would not make sense but is
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Chris van den Berg
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#499
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Re: Almost finishet BitX
FYI...
Here in the US, tap washers (i.e. faucet washers) come in various sizes,
from over 1 inch OD down to less than 1/4 inch OD. For my first BITX20
I used those that were for bathroom basin
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Arv Evans <arvevans@...>
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#498
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