Diplexers, filters, amps PRICES do NOT include postage or VAT. Click here on Prices for list. DOWNLOAD a copy of this catalogue and save your on-line time! Please feel free to use our Shopping Cart as a calculator without obligation. It will calculate the total order cost for you. Simply add the items you want, select the most appropriate shipping method, then click Recalculate. |
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 | TV+Radio Distribution amplifier with 2 or 4 outlets. Connect UHF source (or TV aerial) and VHF radio aerial to the inputs. (Photo shows "F" connectors with plastic dust caps fitted). |
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 | This masthead amplifier can be fitted to the aerial pole or in the roof space as close as possible to the aerial. It receives its 12 volt power feed from the P1235 power supply which can be fitted anywhere in the coaxial cable leading from the aerial to the VCR or TV but the cable must not have anything connected that will block the power (such as an isolated wall plate socket or a "Y" splitter). Connections should be coated with silicone grease if installed outdoors. Specifications: - Wide band covering channels 21 - 68
- Gain: 14dB
- Gain spread (flatness): +/- 1dB
- Noise figure: 1.9dB
- Output: DIN 45004 - 100dbuv
- Power requirement: 12v DC at 10mA
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 | P1235 power supply to be installed as described above. It has a moulded UK 3-pin plug on a 145cm (just under 5') lead. Requires an adjacent 230v AC power socket. Specifications: - Output power: 12v DC at 35mA max (short-circuit resistant)
- Indoor mains operated: 230v AC 50Hz +/- 10% 2Watts
- Moulded 13 Amp plug with 3 Amp fuse fitted
- Through-loss VHF/UHF: 40 to 860MHz les than 1dB
- LED indicator: mains ON
- Size: W 110 x H 76 x D 40mm
- Mounting: 2 hole (screws not supplied).
Also see twin-output power supplies, below. |
| IMPORTANT: When a power supply is used to feed an amplifier upstairs, any wall plate MUST be a non-isolated type, otherwise the aerial signal will get through but the DC power won't. An isolated (decoupled) plate is often marked with a capacitor symbol -||- so if yours has this (or obviously has capacitors fitted inside) don't use it unless you short-circuit the capacitors. |
| Why would you use this masthead amplifier? You would normally use it where the signal provided by the aerial is slightly too low and it is not possible to improve it by replacing the aerial with a better type. You would also use it where the signal is adequate but where the cable is picking up interference and can not be replaced with a better type of cable. (In the latter case you would fit an attenuator at the far end of the cable. This will reduce the signal to its original level AND reduce the level of interference. It is important to install the amplifier fairly close to the aerial because the cable between the aerial and amplifier can pick up interference, especially from mains wiring in the loft and from passing traffic. The amplifier will boost this interference so you should minimise the length of cable AND you should use double-shielded cable between the aerial and the amplifier. It is also recommended that you use double-shielded cable for the down feed from the amplifier. Power Supplies |
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| High reliability professional 12 volt power supply providing up to 100mA |
| Why would you need these power supplies? These power supplies do the same job as the P1235, above, but they have two output sockets to feed two separate television systems. This is handy if you are sharing an aerial with a neighbour or if you need to run a cable to a second TV. The P1235/2 can supply up to 35mA of current and is fine for the WB1214 masthead amplifier, above. The P1290/2 can supply up to 90mA and is adequate for our DAT45 and DAT75 aerials if they are equipped with an MRD (See Televes aerial page). The AL125 is a high quality, high reliability version with 5 year guarantee. Please bear in mind that all splitters reduce the signal by more than 50% (3dB) so you may need to increase your amplifier gain to compensate. We can supply all "Vision" products. If you don't see what you need, please ask. |
 FM Gain 2dB
DAB Gain 4dB
UHF 17-27dB Variable Gain
Max input 79dBµv
Noise figure 1.4dB | VISION V20-3127 Masthead/Loft UHF/FM/DAB, 27dB British designed and built specifically for UK digital TV. Lowest noise figure in class. Pulls in weak signals for steady picture and clear sound when lesser mastheads cannot. Gold plated connectors and compartmentalised internal screens improve shielding. Almost impervious to local interference. Top quality components and superior plastics ensure fit-and-forget and long lifespan. Meets latest specs for low energy. Operate from 5V to 13V without performance degradation. Drive from DTT receiver with 5V line powering or from existing 12V supplies. Aerial inputs (3) with single output to decombiner (triplexer). Connections should be coated with silicone grease if installed outdoors. Or buy separately, below. |
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| V24-310 FM+DAB+UHF decombiner (triplexer). |
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| UXF4 masthead/loft amplifier 10dB per output - Click HERE for full info |
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| UXFR2-20 UHF masthead amplifier with 2 outputs and variable gain - 2 outputs
- Gain adjustable 10 - 20dB
- Noise less than 3.5dB
- Max output 98dBµV
- Built in F-box spanner
- LED power indicator
- Includes PSF1200 12 volt/100mA power supply (needs at least 50mA)
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| UXFR4-20 UHF+ radio masthead amplifier with 4 outputs and variable gain - 4 outputs
- UHF Gain adjustable 10 - 20dB
- VHF gain 6dB
- 2 input (UHF and FM/DAB/VHF radio)
- Noise less than 3.5dB
- Max output 92dBµV
- Built in F-box spanner
- LED power indicator
- Includes PSF1200 12 volt/100mA power supply (needs at least 55mA)
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We can supply all "Triax Wolsey" products. If you don't see what you need, please ask. |
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| Triax Wolsey WFAV425 masthead amplifier - 1 UHF input
- 4 UHF outputs
- Adjustable gain 12 - 25dB
- Noise figure <2dB
- Max output 4 x 85dBuV
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| 12 volt 100mA single-output mains-powered PSU for above amplifier. |
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We can supply all "Vision" products. If you don't see what you need, please ask. |
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Plastic tool supplied for adjusting gain and tightening F connectors. Please note that gain adjuster is very delicate and F connectors are very tight (use grease).
UHF 470 - 860 MHz. Filters remove TETRA and other interference. Interstage Gain adjustment of 12-20dB. Noise figure of 1.4dB. Maximum output 70dBV. Gain flatness of 0.7dB. Gold plated F-Connectors & internal screens improve shielding. Similar to proception amplifiers. | "VISION" 2 or 4 way masthead/loft amplifier with power supply. Similar to UXF4 (above) but with ADJUSTABLE GAIN up to 20dB per output. Ideal if you are uncertain how much amplification you need. Very low internal noise (typically only 1.4dB). Requires 5v to 12v. Low energy 5 volt power supply included. The 5 volt psu supplies 60mA max. (5v PSU not available separately). All connections use "F" connectors. The power supply connects to the down-feed from any of the four outputs. The power supply can be installed near any convenient mains power point. Right click HERE to download data sheet. Need more than 4 outputs? Add splitters - click HERE. |
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| Can I order these separately? Yes, by popular request. Apparently some receivers are able to supply 5 volts via the aerial feed and our amplifiers work with this, so you don't need to order a power supply. The 4 way (& 2 way) amplifiers both take 45mA @ 5 volts DC. They can also run off a 12 volt supply. 5 volt PSU is not available separately! |
| (Other masthead and loft amplifiers available. Please email Technical with your requirements). |
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Click image to enlargen | If you have a cable which is already carrying combined signals from a UHF, VHF and/or FM and/or DAB aerial, this amplifier can selectively boost them and feed all combined signals to two outputs. It's effectively a wideband TV and radio signal splitter with adjustable gain on the UHF channel and a separate gain control for the VHF/FM/DAB channel. Right click HERE to download data sheet. Click photo (left) to enlargen. |
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 | ANTIFERENCE A281LR PRO 8 way amplifier Distribution amplifier with 2 separate inputs to distribute FM-DAB, UHF frequencies to 8 outputs. 16dB variable attenuation controls on VHF/UHF inputs. Fully screened. F-type connectors ensure secure and reliable connection. Rejects all other frequencies outside of the UHF band. Ideal for reducing impact of interfering signals caused by TETRA, PMR and GSM mobile-phone transmissions. 8dB gain. Maximum input level of 82dBµV. Maximum output 90dBµV on split outputs, 98 dBµV on the Full port. Full port enables system to be expanded by adding a series of taps. Automatic line power facility 12V 50mA. Short circuit protection. Internal mains power supply fitted with 13A mains plug. |
 Cable for Digital satellite and TV
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 | To ensure the best possible reception you would be wise to use double-screened coaxial cable. No point in buying the best aerial then using poor quality cable! Read more about this on page 8 CT100 and H109 cable is what Sky use for digital satellite installation. Short lengths (up to 30 metres) can be supplied. Twin coaxial cable available. Clips available. |
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 Please choose from drop-down list, below. | DIPLEXER S AND FILTERS at £9.95 An aerial/aerial Diplexer is actually a filtered UHF aerial combiner which has two inputs for TV aerials that point in different directions and pick up signals from different channels. Normally you can't combine these signals because you would get "ghosting" or "cancellation" of signals. However, the diplexer allows through two specific bands of UHF channel frequencies while filtering out the opposite bands from each aerial. It can also be used with a single aerial to filter out unwanted TV channels, leaving those UHF channel numbers free for you to use for your VCR, DVD, Satellite Receiver, ONdigital receiver RF output, Game Station, etc. Ask for free 75 Ohm resistor if you intend to use it this way! Order code = for channels FRI70 FRINGE (GROUP A) 21 to 34 pass filter (Resistor not required)
FRI71 FRINGE (GROUP B) 35 to 53 pass filter (Resistor not required)
FRI72 FRINGE (GROUP C/D) 48 to 68 pass filter (Resistor not required)
FRI64 FRINGE (A+37 to E) 21-37 + 40-68 aerial/aerial combiner Diplexer
FRI67 FRINGE (Ato37 + E) 21-34 + 37-68 aerial/aerial combiner Diplexer
34103-TMC3335 = 21-33 + 35-69 aerial/aerial combiner Diplexer
56696-TMC3537 = 21-35 + 37-69 aerial/aerial combiner Diplexer
56713-TMC3739 = 21-37 + 39-69 aerial/aerial combiner Diplexer
56730-TMC4648 = 21-46 + 48-69 aerial/aerial combiner Diplexer
56747-TMC5153 = 21-51 + 53-69 aerial/aerial combiner Diplexer
F333-530 matching resistor (required with aerial/aerial combiner Diplexer if only one aerial connected). £0.10p |
| Because there is a variety of types, dependent on your location and the channels that you want to use, the one you need may not be in stock. Please be patient while we obtain it for you. Note that there is some attenuation near the split point frequency: for example, if you want to receive channel 33, do NOT order 21-33 + 35-69 as 33, 34 and 35 will be significantly attenuated. Connections should be protected with silicone grease if mounted outdoors. Download and read "Piping TV Around the House" if you are not sure. |
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| UHF + FM diplexer for combining TV aerial with Radio aerial signal to send down one coaxial cable. (At the other end you will need a decombiner plate to split the signals. See page 15 for our GLO28 wall plate). The diplexer has "F" connectors and is supplied in a weatherproof plastic housing for mounting directly on a pole. However, it may be mounted in a loft or elsewhere. |
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| V25-101 UHF only Band-pass filter to reject TETRA and GSM interference (with F connectors). DC blocked (does not pass power to a masthead amplifier). |
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