Kit
& Component Index
July
2007 list
Dollar Checks now accepted. Please e-mail for details.
Euros now accepted at 1.50 to the British Pound and US dollars at 2.00.
Please check to see if post and package is included. If not, just e-mail your
requirements and I'll calculate the weight and postage.
1)
Drake low noise
amplifier conversion kit .
Hewlett Packard MGA86576 monolithic
amplifier and components to improve the gain and
noise figure of the Drake 2280 S Band
receive converter.
MGA86576, 150nH SMD inductor, 2.7V Zener,
and 2 x 22pF.
Inc postage worldwide £7.50
2) Drake
replacement local oscillator crystal.
Reduced height HC49 crystal.
8.8125 MHz 15pF parallel load. (S band - 2m)
Inc postage worldwide £6.00
3) 96.013
MHz Crystal
3rd overtone crystal
in HC18U wire ended case. Ideal for generating a signal source for
testing S band equipment. Puts the
source into the AO-40 passband and not right at the
band edge as 96.000 designs. - For full kit see
11 below
Inc postage to UK /
worldwide £6.00
4)
Toko
dielectric bandpass filter. (Out of stock 9/2005)
Used to obtain typically 1.94dB
system noise figure by replacing the lossy stripline filter in the
Drake 2880 S-Band converter. B/W 100MHz 2450MHz 1dB
insertion loss.
Including 1mm pins for earth con
Inc postage worldwide
£4.00
5) S-Band
to 10m. 'Gemini' receive converter kit. Details
Available ?- TBD at next GTO launch
A high performance receive converter from
G4DDK and G0MRF.
This dual conversion receive
converter has a 0.6dB noise figure with a conversion gain of
37dB. As this converter has
been designed using a large number of surface mount
devices, the Gemini kit is being
supplied as a completed, tested PCB with a box and two
reduced flange size N-type female
connectors.
Price to be decided
6) S-Band
to 70cms receive converter kit. Details
Published by AMSAT in the UK, USA and
Germany and by the RSGB. This easy to construct
kit includes plated through hole PCB, all
components and enclosure to build a 2400 to 432MHz
satellite band converter.
Typical performance 2dB N.F. and 30dB conversion gain.
Just add connectors of your choice
for worldwide communication with a small dish antenna.
Surface mount technology.
Including recorded delivery to the UK. Or
small packet airmail worldwide.
£70.00
International recorded delivery to most countries is also available on
request
7) 300
Watt Class D 136 kHz transmitter. Details
Single board class D transmitter. Twin crystal VXO. Over
current and high reflected power
protection. For full details see article. -
follow link from Index page.
Supplied:
All PCB
mounted components including crystals, dual gang pot for VXO, Power
FETs / mounting washers.
4 x LEDs including 2x ultrabright types and single 42mm toroid.
Not Supplied: PSU / Heat sink / switches /
enclosure /meters etc.
Including recorded delivery to the UK or small packet airmail
worldwide £79.95 (sold out 3/06)
8) As above
but less VXO parts. - For use with other 2f signal source e.g. SM6LKM DDS, or for
use outside the European 136kHz allocation.
Including delivery as above £69.95 (sold out)
9) Band
1 FM Receiver Details -
www.airwavesystems.co.uk
Including UK post
£48.00
A wide band FM receiver PCB
that is crystal controlled. 12 - 15V
Can operate on a single frequency
between 45 and 65MHz
Suitable for point to point links
including JFMG licensed frequencies.
Available on a choice of spot
frequencies, or on a frequency of
your choice at £10 extra (cost of
crystal)
10) G3YXM
136kHz LF Preamplifier Details
Double tuned circuit followed
by a JFET amplifier and bipolar buffer.
2 x Toko 719VXA016 coils,
semiconductors +
resistors, capacitors etc.
and a single sided PCB
44mm x 34mm. Coils can be tuned from 130 - 200kHz.
This pre-amp is now available assembled
and tuned for 136.5kHz @ £10 - Hurry! last 10 April 2007
(power) : gain 13dB. -3dB B/W 3.5kHz. -20dB at 129 / 143kHz. -40 at 118 /168. -52dB @ 100kHz.
11) 2.4
GHz signal source kit - Get ready for P3E Eagle and SSETI ESEO.
Details
This little
circuit is a comb, or harmonic, generator. It uses a 3rd overtone
crystal and a PIN diode multiplier to
generate a series of spot frequencies
across the microwave spectrum. Useful for
aligning S band receivers and
checking the radiation pattern of antennas. - I
can even hear this on 10GHz.
A full kit of parts, including a crystal which
gives a marker in the P3E
S band transponder downlink, is available from AMSAT-UK Kit £15.00
(A-UK members price)
Amsat-UK accept credit card orders and will
ship worldwide
All kits have a PCB with screen printing and
plated through holes.
12) 435 - 1296MHz pre-amp.
2005 Details
Wideband Pre-amp PCB
inc postage to UK £6.50. Europe 10 Euros. USA $12
Kit of parts for the PCB
including PCB ATF54143 / capacitors resistors semiconductors etc.
inc postage to UK £20 Europe 30. Euros USA $40
13) - A work in progress. SM6LKM
/ G0MRF DDS board
All PCBs for the original
'stand alone' 6MHz / LF design have now been sold. The board is being
re-designed for a new DDS and controller. More details later but 1Hz to 40MHz is
the new objective.
Components.
- (Postage extra)
Printed Circuit
Boards
300W Class D transmitter PCB (sold
out 3/06)
£9.75
Philips Components
ferrite toroids.
58mm 3C90 toroid ( Suitable for tx matching transformer or antenna matching
to 800W)
£7.80 - Sold out
42mm 3C90 toroid (used in 300W class D transmitter)
£3.25 - in stock
25mm 3C90 toroid (bifilar DC feed choke on 250W linear design)
£1.80 - Back in stock from 7/Jan/04
15mm 3C85 toroid (directional coupler or low power interstage
matching)
£0.50
Miscellaneous
Components
Liquid Crystal Displays for the SM6LKM DDS project. 2 x 16 back
lit £7.00
12A SPST relays from RS components. Tested to 1000W RF output
£2.78
STW34NB20 Power FET 200 V Vds 34 Amp Id
£3.27
Pair of crystals for VXO. Class D LF. 8.000 and
8.275 MHz
HC49U
8274 - 8000 /2 = 137kHz £5 per pair
Reduced Flange size N-type connector. Picture
Chassis mounting N-type female connector. 4 hole mounting 1.3mm dia
spill connection to PCB. Mounting hole spacing 12.5mm (same as standard
BNC)
DC - 11GHz min. Central PTFE diameter 4.1mm. Flange size 17.5mm
sq.
£3.75
Also available. Limited stocks of
MC145152 dual modulus
parallel input synth chip @ £5 each
MC145156DW2 synthesiser chips @ £2 each
SD1407 28V rugged 100W bipolar to 110MHz @ £30
2N5642 28V 20W bipolar to 175MHz @ £20
also MAR devices and MGA86576 (6GHz) / ATF36077 (12GHz)
To Contact me, e-mail g0mrf@aol.com
or write to
David Bowman
38 Wyndham Crescent, Hounslow,
Middlesex. TW4 5HZ. England.
Tel / + 44 (0) 20 8572 5876. 09.00 - 18.00 utc - or leave a
message.
Post and Packing
For orders of components, postage is based on the overall weight of the package.
Standard first class post is used within the UK. Recorded delivery is used
for orders exceeding £50. Insured post is available on request at extra cost.
Orders outside the UK.
Small packet airmail is used as standard. This service is not recorded or
'traceable' but has proved very reliable. With 300 packages sent to mainly
western countries over three
years, not one has gone astray. However international recorded delivery
or an insured service e.g. UPS, or Fed Ex can be purchased to countries where this is
available.
E&OE
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