Topics

Substitutions or Sourcing components

m1dgs <d.snell@...>
 

What are members doing about component sources?

Keytronics has 10MHz xtals at £1.00 each (ten required) and the
2N3866 seems to be obsolete. Do others see any difficulties in
sourcing parts.

Nevertheless it's a brilliant idea. Thanks Farhan

Dave M1DGS

Hans Summers <Hans.Summers@...>
 

Keytronics has 10MHz xtals at £1.00 each (ten required)
and the 2N3866 seems to be obsolete. Do others see any
difficulties in sourcing parts.
I'm confused about the 2N3866 - what's it for? I see no mention on the
circuit diagram; the nice thing is that a variety of transistors will do in
this design.

Rapid Electronics (http://www.rapidelectronics.co.uk) sell 10MHz crystals at
£0.38 each (£0.45 incl sales tax). That drops to £0.305 (£0.36 incl VAT) for
QTY 25+. If enough people want them I'd be happy to order a batch and parcel
them out. People who are interested in 10, let me know within the next few
days and maybe we'll sort it out sometime next week. Assuming 25+, the price
would be £3.86 for 10 including a 1st class UK postage stamp (overseas
postage stamp, extra).

Ok look, I'm not going into the kit business but while we're at it, if you
want them (also from Rapid):

25 BC547B's suitable for the rig: £0.82 incl VAT
1 IRF510: £1.53 incl VAT

Presumably the total weight will be under 60g so these will all fit under
the same single £0.28 postage stamp.

So, for a LIMITED TIME ONLY... Crystals, transistors and the MOSFET, £6.21
incl UK postage (overseas is fine, we just add the extra postage).

72/3 Hans G0UPL
http://www.HansSummers.com

david.g3ryp <david.g3ryp@...>
 

If anyone has managed to buy anything from Keytronics I'd be interested. I was told after placing an order that he was too busy doing some plumbing!
 
David

Mark Jones <Mark@...>
 

Hi Hans
 
Happy to go for a 6.21 order from you!
 
Regards,
 
Mark G0MGX

-----Original Message-----
From: Hans Summers [mailto:Hans.Summers@...]
Sent: 18 June 2004 11:56
To: 'BITX20@...'
Subject: RE: [BITX20] Substitutions or Sourcing components


> Keytronics has 10MHz xtals at £1.00 each (ten required)
> and the 2N3866 seems to be obsolete. Do others see any
> difficulties in sourcing parts.

I'm confused about the 2N3866 - what's it for? I see no mention on the
circuit diagram; the nice thing is that a variety of transistors will do in
this design.

Rapid Electronics (http://www.rapidelectronics.co.uk) sell 10MHz crystals at
£0.38 each (£0.45 incl sales tax). That drops to £0.305 (£0.36 incl VAT) for
QTY 25+. If enough people want them I'd be happy to order a batch and parcel
them out. People who are interested in 10, let me know within the next few
days and maybe we'll sort it out sometime next week. Assuming 25+, the price
would be £3.86 for 10 including a 1st class UK postage stamp (overseas
postage stamp, extra).

Ok look, I'm not going into the kit business but while we're at it, if you
want them (also from Rapid):

25 BC547B's suitable for the rig: £0.82 incl VAT
1 IRF510: £1.53 incl VAT

Presumably the total weight will be under 60g so these will all fit under
the same single £0.28 postage stamp.

So, for a LIMITED TIME ONLY... Crystals, transistors and the MOSFET, £6.21
incl UK postage (overseas is fine, we just add the extra postage).

72/3 Hans G0UPL
http://www.HansSummers.com

Hans Summers <Hans.Summers@...>
 

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 will pass on at cost price: 10x
10MHz crystals, 25x BC547B, 1x IRF510. Cost £6.21 incl UK postage (overseas
postage extra, at cost).

72/3 Hans G0UPL
http://www.hanssummers.com

-----Original Message-----
From: Mark Jones <Mark@...>
To: BITX20@... <BITX20@...>
Sent: Sat Jun 19 08:26:02 2004
Subject: RE: [BITX20] Substitutions or Sourcing components

Hi Hans

Happy to go for a 6.21 order from you!

Regards,

Mark G0MGX

-----Original Message-----
From: Hans Summers [mailto:Hans.Summers@...]
Sent: 18 June 2004 11:56
To: 'BITX20@...'
Subject: RE: [BITX20] Substitutions or Sourcing components



Keytronics has 10MHz xtals at £1.00 each (ten required)
and the 2N3866 seems to be obsolete. Do others see any
difficulties in sourcing parts.
I'm confused about the 2N3866 - what's it for? I see no mention on the
circuit diagram; the nice thing is that a variety of transistors will do in
this design.

Rapid Electronics ( http://www.rapidelectronics.co.uk) sell 10MHz crystals
at
£0.38 each (£0.45 incl sales tax). That drops to £0.305 (£0.36 incl VAT) for
QTY 25+. If enough people want them I'd be happy to order a batch and parcel
them out. People who are interested in 10, let me know within the next few
days and maybe we'll sort it out sometime next week. Assuming 25+, the price
would be £3.86 for 10 including a 1st class UK postage stamp (overseas
postage stamp, extra).

Ok look, I'm not going into the kit business but while we're at it, if you
want them (also from Rapid):

25 BC547B's suitable for the rig: £0.82 incl VAT
1 IRF510: £1.53 incl VAT

Presumably the total weight will be under 60g so these will all fit under
the same single £0.28 postage stamp.

So, for a LIMITED TIME ONLY... Crystals, transistors and the MOSFET, £6.21
incl UK postage (overseas is fine, we just add the extra postage).

72/3 Hans G0UPL
http://www.HansSummers.com



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Jon Harris <jon@...>
 

Sign me up too Hans, where do i send the cash!

Cheers,

Jon H.

----- Original Message -----
From: "Mark Jones" <Mark@...>
To: <BITX20@...>
Sent: Saturday, June 19, 2004 8:26 AM
Subject: RE: [BITX20] Substitutions or Sourcing components


Hi Hans

Happy to go for a 6.21 order from you!

Regards,

Mark G0MGX

-----Original Message-----
From: Hans Summers [mailto:Hans.Summers@...]
Sent: 18 June 2004 11:56
To: 'BITX20@...'
Subject: RE: [BITX20] Substitutions or Sourcing components



Keytronics has 10MHz xtals at �1.00 each (ten required)
and the 2N3866 seems to be obsolete. Do others see any
difficulties in sourcing parts.
I'm confused about the 2N3866 - what's it for? I see no mention
on the
circuit diagram; the nice thing is that a variety of transistors
will do in
this design.

Rapid Electronics (http://www.rapidelectronics.co.uk) sell 10MHz
crystals at
�0.38 each (�0.45 incl sales tax). That drops to �0.305 (�0.36
incl VAT) for
QTY 25+. If enough people want them I'd be happy to order a batch
and parcel
them out. People who are interested in 10, let me know within the
next few
days and maybe we'll sort it out sometime next week. Assuming
25+, the price
would be �3.86 for 10 including a 1st class UK postage stamp
(overseas
postage stamp, extra).

Ok look, I'm not going into the kit business but while we're at
it, if you
want them (also from Rapid):

25 BC547B's suitable for the rig: �0.82 incl VAT
1 IRF510: �1.53 incl VAT

Presumably the total weight will be under 60g so these will all
fit under
the same single �0.28 postage stamp.

So, for a LIMITED TIME ONLY... Crystals, transistors and the
MOSFET, �6.21
incl UK postage (overseas is fine, we just add the extra
postage).

72/3 Hans G0UPL
http://www.HansSummers.com


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Ashhar Farhan <farhan@...>
 

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 is a bit of a
problem. i will find someone to carry them to these countries and post it
to some of you.

the shop might ship them abroad but the shipping costs from here are
prohibitive. if only the qsl bureaus also handled components!

- fahran

On Sat, 19 Jun 2004, Jon Harris wrote:

Sign me up too Hans, where do i send the cash!

Cheers,

Jon H.

----- Original Message -----
From: "Mark Jones" <Mark@...>
To: <BITX20@...>
Sent: Saturday, June 19, 2004 8:26 AM
Subject: RE: [BITX20] Substitutions or Sourcing components


Hi Hans

Happy to go for a 6.21 order from you!

Regards,

Mark G0MGX

-----Original Message-----
From: Hans Summers [mailto:Hans.Summers@...]
Sent: 18 June 2004 11:56
To: 'BITX20@...'
Subject: RE: [BITX20] Substitutions or Sourcing components



Keytronics has 10MHz xtals at �1.00 each (ten required)
and the 2N3866 seems to be obsolete. Do others see any
difficulties in sourcing parts.
I'm confused about the 2N3866 - what's it for? I see no mention
on the
circuit diagram; the nice thing is that a variety of transistors
will do in
this design.

Rapid Electronics (http://www.rapidelectronics.co.uk) sell 10MHz
crystals at
�0.38 each (�0.45 incl sales tax). That drops to �0.305 (�0.36
incl VAT) for
QTY 25+. If enough people want them I'd be happy to order a batch
and parcel
them out. People who are interested in 10, let me know within the
next few
days and maybe we'll sort it out sometime next week. Assuming
25+, the price
would be �3.86 for 10 including a 1st class UK postage stamp
(overseas
postage stamp, extra).

Ok look, I'm not going into the kit business but while we're at
it, if you
want them (also from Rapid):

25 BC547B's suitable for the rig: �0.82 incl VAT
1 IRF510: �1.53 incl VAT

Presumably the total weight will be under 60g so these will all
fit under
the same single �0.28 postage stamp.

So, for a LIMITED TIME ONLY... Crystals, transistors and the
MOSFET, �6.21
incl UK postage (overseas is fine, we just add the extra
postage).

72/3 Hans G0UPL
http://www.HansSummers.com


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Hans Summers <Hans.Summers@...>
 

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 individually as soon as I get the
chance, which probably won't be until Monday.

It's nice to see so many people joining this group and planning to build
this neat design.

I'm happy to extend my offer of bulk purchase components from Rapid
Electronics to optionally include for those who want them, some of the other
parts which you might not find so easily in your junk boxes. I'm thinking of
the 9V1 and 36V zener diodes, 7805 voltage regulator, 10x 1N4148 diodes,
trimmer capacitors, and possibly something to substitute the 2N2218 driver
transistor. All small components which won't much increase the weight, and
will still mean I can use small envelopes and not worry about special
packaging etc. I'll work out prices on Monday at my office, which is where
my Rapid Electronics catalogue resides ;-)

In his prior version Farhan was using two BC547 parallelled, and only
replaced them with a single heatsinked 2N2218 when the '547's were fried
during a long PSK31 QSO. Can Farhan or anybody else suggest alternatives
since I don't think Rapid sell the 2N2218?

Now a word about the crystals. Farhan recommends buying 10 and choosing the
closest 4 for the filter. I did so and chose the next closest one for the
BFO though this wouldn't really be critical. Measurement could be via a
frequency counter or zero beating on another receiver with digital readout
and coverage of 10MHz. I have a homebrewed counter in my HF receiver, you
can read about it on my webpage. But if you don't have either of those items
I can imagine a rather simple and cheap frequency counter circuit having
only 3 common 74HC-series IC's and a handful of LED's for binary readout of
frequency, providing more than sufficient resolution for the task. Failing
all of that I'd seriously suggest getting just 5 crystals and trying them
anyway. When I measured my 10 they were quite close and I think reasonable
results would be obtainable without the precise matching if suitable
equipment isn't available. I'm interested in other people's opinion on this.
If I can manage to find my notes on Monday I'll post my ten measurements,
and you'll see what I mean.

Any more orders, let me know via email. But remember, no money yet until I
make final calculations.

72/3 Hans G0UPL
http://www.hanssummers.com

-----Original Message-----
From: Jon Harris <jon@...>
To: BITX20@... <BITX20@...>
Sent: Sat Jun 19 22:25:36 2004
Subject: Re: [BITX20] Substitutions or Sourcing components

Sign me up too Hans, where do i send the cash!

Cheers,

Jon H.

----- Original Message -----
From: "Mark Jones" <Mark@...>
To: <BITX20@...>
Sent: Saturday, June 19, 2004 8:26 AM
Subject: RE: [BITX20] Substitutions or Sourcing components


Hi Hans

Happy to go for a 6.21 order from you!

Regards,

Mark G0MGX

-----Original Message-----
From: Hans Summers [mailto:Hans.Summers@...]
Sent: 18 June 2004 11:56
To: 'BITX20@...'
Subject: RE: [BITX20] Substitutions or Sourcing components



Keytronics has 10MHz xtals at £1.00 each (ten required)
and the 2N3866 seems to be obsolete. Do others see any
difficulties in sourcing parts.
I'm confused about the 2N3866 - what's it for? I see no mention
on the
circuit diagram; the nice thing is that a variety of transistors
will do in
this design.

Rapid Electronics (http://www.rapidelectronics.co.uk) sell 10MHz
crystals at
£0.38 each (£0.45 incl sales tax). That drops to £0.305 (£0.36
incl VAT) for
QTY 25+. If enough people want them I'd be happy to order a batch
and parcel
them out. People who are interested in 10, let me know within the
next few
days and maybe we'll sort it out sometime next week. Assuming
25+, the price
would be £3.86 for 10 including a 1st class UK postage stamp
(overseas
postage stamp, extra).

Ok look, I'm not going into the kit business but while we're at
it, if you
want them (also from Rapid):

25 BC547B's suitable for the rig: £0.82 incl VAT
1 IRF510: £1.53 incl VAT

Presumably the total weight will be under 60g so these will all
fit under
the same single £0.28 postage stamp.

So, for a LIMITED TIME ONLY... Crystals, transistors and the
MOSFET, £6.21
incl UK postage (overseas is fine, we just add the extra
postage).

72/3 Hans G0UPL
http://www.HansSummers.com


Yahoo! Groups Sponsor

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001176/D=gr
oups/S=1705063108:HM/EXP=1087642550/A=2128215/R=0/SIG=10se96mf6/*
http://comp
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D=groups/S=
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Hans Summers <Hans.Summers@...>
 

Jon, I'll send you an email tomorrow with final details. 72/3 de Hans G0UPL

-----Original Message-----
From: Jon Harris <jon@...>
To: BITX20@... <BITX20@...>
Sent: Sat Jun 19 22:25:36 2004
Subject: Re: [BITX20] Substitutions or Sourcing components

Sign me up too Hans, where do i send the cash!

Cheers,

Jon H.

----- Original Message -----
From: "Mark Jones" <Mark@...>
To: <BITX20@...>
Sent: Saturday, June 19, 2004 8:26 AM
Subject: RE: [BITX20] Substitutions or Sourcing components


Hi Hans

Happy to go for a 6.21 order from you!

Regards,

Mark G0MGX

-----Original Message-----
From: Hans Summers [mailto:Hans.Summers@...]
Sent: 18 June 2004 11:56
To: 'BITX20@...'
Subject: RE: [BITX20] Substitutions or Sourcing components



Keytronics has 10MHz xtals at £1.00 each (ten required)
and the 2N3866 seems to be obsolete. Do others see any
difficulties in sourcing parts.
I'm confused about the 2N3866 - what's it for? I see no mention
on the
circuit diagram; the nice thing is that a variety of transistors
will do in
this design.

Rapid Electronics (http://www.rapidelectronics.co.uk) sell 10MHz
crystals at
£0.38 each (£0.45 incl sales tax). That drops to £0.305 (£0.36
incl VAT) for
QTY 25+. If enough people want them I'd be happy to order a batch
and parcel
them out. People who are interested in 10, let me know within the
next few
days and maybe we'll sort it out sometime next week. Assuming
25+, the price
would be £3.86 for 10 including a 1st class UK postage stamp
(overseas
postage stamp, extra).

Ok look, I'm not going into the kit business but while we're at
it, if you
want them (also from Rapid):

25 BC547B's suitable for the rig: £0.82 incl VAT
1 IRF510: £1.53 incl VAT

Presumably the total weight will be under 60g so these will all
fit under
the same single £0.28 postage stamp.

So, for a LIMITED TIME ONLY... Crystals, transistors and the
MOSFET, £6.21
incl UK postage (overseas is fine, we just add the extra
postage).

72/3 Hans G0UPL
http://www.HansSummers.com


Yahoo! Groups Sponsor

ADVERTISEMENT

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001176/D=gr
oups/S=1705063108:HM/EXP=1087642550/A=2128215/R=0/SIG=10se96mf6/*
http://comp
anion.yahoo.com> click here

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D=groups/S=
:HM/A=2128215/rand=403314333>


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Jon Harris <jon@...>
 

Thanks Hans, and many thanks for the offer of help, much
appreciated!

73,

Jon H.

----- Original Message -----
From: "Hans Summers" <Hans.Summers@...>
To: <BITX20@...>
Sent: Sunday, June 20, 2004 10:28 AM
Subject: Re: [BITX20] Substitutions or Sourcing components



Jon, I'll send you an email tomorrow with final details. 72/3 de
Hans G0UPL


-----Original Message-----
From: Jon Harris <jon@...>
To: BITX20@... <BITX20@...>
Sent: Sat Jun 19 22:25:36 2004
Subject: Re: [BITX20] Substitutions or Sourcing components

Sign me up too Hans, where do i send the cash!

Cheers,

Jon H.

----- Original Message -----
From: "Mark Jones" <Mark@...>
To: <BITX20@...>
Sent: Saturday, June 19, 2004 8:26 AM
Subject: RE: [BITX20] Substitutions or Sourcing components


Hi Hans

Happy to go for a 6.21 order from you!

Regards,

Mark G0MGX

-----Original Message-----
From: Hans Summers [mailto:Hans.Summers@...]
Sent: 18 June 2004 11:56
To: 'BITX20@...'
Subject: RE: [BITX20] Substitutions or Sourcing components



Keytronics has 10MHz xtals at �1.00 each (ten required)
and the 2N3866 seems to be obsolete. Do others see any
difficulties in sourcing parts.
I'm confused about the 2N3866 - what's it for? I see no mention
on the
circuit diagram; the nice thing is that a variety of transistors
will do in
this design.

Rapid Electronics (http://www.rapidelectronics.co.uk) sell 10MHz
crystals at
�0.38 each (�0.45 incl sales tax). That drops to �0.305 (�0.36
incl VAT) for
QTY 25+. If enough people want them I'd be happy to order a batch
and parcel
them out. People who are interested in 10, let me know within the
next few
days and maybe we'll sort it out sometime next week. Assuming
25+, the price
would be �3.86 for 10 including a 1st class UK postage stamp
(overseas
postage stamp, extra).

Ok look, I'm not going into the kit business but while we're at
it, if you
want them (also from Rapid):

25 BC547B's suitable for the rig: �0.82 incl VAT
1 IRF510: �1.53 incl VAT

Presumably the total weight will be under 60g so these will all
fit under
the same single �0.28 postage stamp.

So, for a LIMITED TIME ONLY... Crystals, transistors and the
MOSFET, �6.21
incl UK postage (overseas is fine, we just add the extra
postage).

72/3 Hans G0UPL
http://www.HansSummers.com


Yahoo! Groups Sponsor

ADVERTISEMENT

<http://us.ard.yahoo.com/SIG=129e7pjo1/M=295196.4901138.6071305.3
001176/D=gr
oups/S=1705063108:HM/EXP=1087642550/A=2128215/R=0/SIG=10se96mf6/*
http://comp
anion.yahoo.com> click here

<http://us.adserver.yahoo.com/l?M=295196.4901138.6071305.3001176/
D=groups/S=
:HM/A=2128215/rand=403314333>


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Timothy Fidler
 

Diz at Kits and Parts in the US has a lot of  Rf  semi stuff,  as well as magnetic cores he is famous for.

Furturlec.com has thousands of crystal frequencies and can also supply 2n3866 if you ask him .. so he told me. He used to list it but perhaps not much  foot traffic.  Opinions vary about Alan's operation (north of "Synney" , not in the US though he has USD prices- he pulls stuff out of warehouses in Thailand to make up orders) . He is also very cheap as in 50c US per crystal for example.  I have had zero problems but it seems others have but then often there is a background like trying to order zero stock parts and so on and the fool then goes and  tries to flame the supplier on some BBS.  He does small orders. NB  the 2n4227 is a very similar CATV transistor ie. good to 80-100 Mhz plus  to the 2N3866 and in general will slot straight in as  a replacement. 

Fred at Far circuits in Chicago  not only sells PCBs but also has  quite a component list including a few common small size cores in both iron powder  and ferrite. I believe he has some IF cans but he does not list them. Pays to ask.

Timothy Fidler
 

Correction read 2N4427 not the number above as good equivalent for the 3866 in the same TO39 can.