Re: Substitutions or Sourcing components
Ok Mark, I'll wait a few days to see if anyone else wants to be included.
For the benefit of new members who mightn't have read my post the other day:
I have an account with Rapid Electronics and
By
Hans Summers <Hans.Summers@...>
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#21
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hans generous offer
HI everyone, got an urge to return to homebrew,This looks a good
restarter project. posted an order direct to you Hans.Thanks. Jack
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wiimford <ford1@...>
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#22
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new pictures
i have posted some pictures of the rig that were in my mailbox.
three of them are from hans, from andy.
- farhan
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ashhar_farhan <farhan@...>
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#23
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Re: Substitutions or Sourcing components
Sign me up too Hans, where do i send the cash!
Cheers,
Jon H.
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Jon Harris <jon@...>
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#24
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Re: Fw: First QSO with the BITX20 Transceiver
dear pete,
very good on your efforts. which crystals are you using? the Cb crysals
available for 9MHz are quite cheap. i am using a PC-based AGC system with
some kind of noise blanker and even
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Ashhar Farhan <farhan@...>
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#26
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Re: Substitutions or Sourcing components
i am in delhi and i iaccidentally discovered the outlet of a major
manufacturer of those tv balun cores. i have bought 500 of them for Rs.200
(about 4 dollars). sending it across to england and usa
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Ashhar Farhan <farhan@...>
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#27
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Re: Substitutions or Sourcing components
Please, do not send me any money yet! Now I have 6 orders, which takes us to
the 100+ pricing for the BC547B so everything will become slightly cheaper.
Thanks for your emails, I will reply
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Hans Summers <Hans.Summers@...>
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#25
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Re: Substitutions or Sourcing components
Jon, I'll send you an email tomorrow with final details. 72/3 de Hans G0UPL
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Hans Summers <Hans.Summers@...>
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#28
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We're off and running!
Hi All
I've completed the VFO today, some pictures on the reflector.
Just need to wait for Hans Components Inc before we go any further.
VFO swinging from 4.25MHz to 4.4MHz - very adjustable with
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Mark <Mark@...>
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#29
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Re: Fw: First QSO with the BITX20 Transceiver (fwd)
---------- Forwarded message ----------
Date: Sat, 19 Jun 2004 22:08:39 -0700
From: Pete Juliano <jessystems@...>
To: Ashhar Farhan <farhan@...>
Subject: Re: Fw: First QSO with
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Ashhar Farhan <farhan@...>
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#35
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Sunday
I wonder how much output everyone's getting from the IRF510?
I can get 2.5 watts rf maximum but this drops to well under a watt with the lpf in circuit. I've checked the lpf cut-off and I would
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david.g3ryp <david.g3ryp@...>
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#30
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Re: We're off and running!
Now the heat's really on at Hans Compoments Inc, then ;-)
I used the tap washers for the inductors. Mine are a black rubbery type of
material, I didn't find white nylon ones like Farhan's photos.
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Hans Summers <Hans.Summers@...>
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#31
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What are tap washers ?
Please could somebody explain to a non-native speaker what "tap washers"
are and where to source them?
I guess this must be some sort of "plastic toroid" (ab)used as a coil former.
But what is
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Heinz Schnait <oe5eep@...>
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#32
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Re: What are tap washers ?
Hmm, good question. An American asked me recently what a "jubilee clip" was
- that was a struggle.
A tap washer is a thin shim of rubber/nylon/fibre that fits inside a water
tap (faucet?) - like in
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Mark Jones <Mark@...>
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#33
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Re: Substitutions or Sourcing components
Thanks Hans, and many thanks for the offer of help, much
appreciated!
73,
Jon H.
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Jon Harris <jon@...>
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#34
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Re: Low Output (was Sunday)
wrote:
with the lpf in circuit. I've checked the lpf cut-off and I would
expect some attenuation but not that much. I tried an irf530 which
promptly overheated and destroyed itself as I increased
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ashhar_farhan <farhan@...>
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#36
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Use 2N3866 instead of 2N2218
the 2N2218 is a fatter type of 2N2222. you can use the 2N3866 instead.
they are expensive in india. but they might be easier to find elsewhere.
- farhan
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Ashhar Farhan <farhan@...>
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#41
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Re: linear coil
i calculated 3uH on each winding.
- farhan
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Ashhar Farhan <farhan@...>
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#42
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Low output
Many thanks for the advice Farhan.
I've taken the measurements you suggested and indeed it was the driver whose output was low - only about 1 volt peak. I was using BC549s throughout and although
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david.g3ryp <david.g3ryp@...>
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#37
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Re: Low output
On Mon, 21 Jun 2004, david.g3ryp wrote:
> I've taken the measurements you suggested and indeed it was the driver whose output was low - only about 1 volt peak. I was using BC549s throughout and
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Ashhar Farhan <farhan@...>
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#43
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