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For Sale
If you would like to know
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136
kHz transverter
Price: £130
Frequency coverage: 134 - 139 kHz
HF frequency: 10.134 - 10.139 MHz
Power output: 15 watts
Modes: CW
Supply voltage: 12 - 14 v DC
Metering: PA input power; forward/reflected power.
TX/RX Control: Front panel toggle switch, and full interface capability with HF
transceiver.
For more details, click here.
Sorry - this fine transverter has now been
sold.
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136
kHz Noise Canceller
Price: £90
Inputs: Noise antenna 1; Noise antenna 2; Receive antenna input;
Output: Receive antenna output
Supply voltage: 12 - 14 v DC
Frequency coverage: 136 - 137.5 kHz
For more details, click here.
Sorry - this fine
noise canceller has now been
sold. |
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136
kHz Loop Antenna Tuning Unit
Price: £120
This ATU is suitable for a wide range of single-turn LF loop antennas. Includes a
built-in balun; SWR Bridge; and antenna switch for selecting a second (unbalanced)
antenna. Capable of handling 500 watts.
(If required, a suitable external variable
capacitor for fine tuning purposes is available separately. It is housed in a black
plastic instrument box. Price: £27.)
For more details, click here.
Sorry - this fine
loop antenna tuning unit has now been
sold. |
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136
kHz Power Amplifier
Price: £290
This amplifier uses a pair of 572B tubes in Class B. With 12 watts of drive, it
easily delivers 400 watts of CW. Includes built-in SWR Bridge; antenna
changeover relay; and transmit/receive switch. Metering of plate current and plate
voltage is selectable from a front-panel switch.
For more details, click here.
Note: This amplifier is a based on a KW1000 HF
amplifier.
Sorry - this fine PA has now been
sold. |
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KW1000
HF Power Amplifier
Price: £200
This amplifier is an excellent example of a late version KW1000, that
includes a low loss tank coil. This unit has also been fitted with the improved
specification mains transformer made by Techno Transformers Limited of Swindon, Wiltshire
(Item Part Number: PUR400/13). In this final version of the specification, the
construction of the windings was changed to reduce losses, and hence solve the 'hot
transformer' problem that led to the death of many a KW1000. The amplifier operates
on 80/40/20/15/10 m. Click on the thumbnails to go to larger pictures of the KW1000.
Sorry - this fine amplifier has now been sold. |
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Small
LF variometer
Price: £30
This variometer, wound on plastic materials, provides a range of 1.6 to 2.4 mH, and is an
ideal variable inductor for coarse tuning LF marconi antennas. Connection is via 4
mm banana plugs and sockets.
For more details about loading coils, click here.
Sorry - this fine variometer has now been
given to a friend.
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Small
loading coils
Price: £7
Wound on PVC buckets (rather like the small variometer above), I have two fixed coils, at
about 2 mH each. Connection is via 4 mm banana plugs and sockets.
For more details
about loading coils, click here.
Sorry - these fine
loading coils have now been
sold. |
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Large
LF variometer
Price: £110
This huge variometer, wound on plastic materials, provides a range of 1 mH to 6 mH, and is
an ideal variable inductor for the coarse and fine tuning of marconi antennas.
Connection is via 4 mm banana plugs and sockets. A high Q is obtained through the
use of 30 amp cable for the main windings.
For more details, click here.
Sorry - this huge variometer has now been
sold. |
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Remote
controlled variometer and control box
Price: £75
This variometer is an ideal variable inductor for fine tuning the resonant frequency of LF
marconi antennas. Connection is via 4 mm banana plugs and sockets. It includes
a 'Lego'-based variometer drive unit, and a built-in impedance matching transformer.
The control box requires a 12 v DC supply.
For more details, click here.
Sorry - this fine
variometer has now been
sold. |
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Impedance
matching transformer
Price: £23
This transformer will match a 50 ohm feeder to a typical resonant LF Marconi
antenna, where the
feed impedance is usually greater than 50 ohms. Connection is via 4 mm banana plugs
and sockets, and the unit is housed in a splash-proof container. Includes secondary
taps for 50; 100; 150; 200; and 250 ohms.
For more details about matching transformers, click here.
Sorry - this fine matching transformer has
now been sold.
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3C85
Ring Cores
25 mm OD. Price: £2-00 each
42 mm OD. Price: £6-00 each
58 mm OD. Price: £14-00 each
For more details about these cores, click here. |
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