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Radio Design Labs

Radio Design Labs SF-TPR24A Line-Level Receiver

£882.00inc. VAT
£735.00 ex. VAT
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Bought in the UK, backed in the UKWhy it matters →
  • Sourced through UK distribution
  • UK manufacturer warranty
  • UK-based engineers
  • No import duty or customs charges
  • GBP pricing, UK VAT invoices
Return within 14 days
Installation services availablePurchase orders: education customers only
7 Years Warranty Included
Key specifications
Inputs (8)RDL Format-A
Input ConnectionsRJ45
Format-A Signal Pairs Used (3)A, B, C (per section)
Outputs (24)150 Ω Balanced
Output ConnectionDetachable Terminal Block (Balanced)
Output Level+4 dBu Bal. nominal, +22 dBu Max
Frequency Response10 Hz to 50 kHz (± 0.1 dB)
THD+N< 0.005%
All 18 specifications

Description

The SF-TPR24A is an eight-section audio receiving chassis compatible with RDL Format-A twisted pair products. Each section receives up to three audio sources and provides three outputs corresponding to signal pairs A, B and C. A studio-quality buffer amplifier feeds +4 dBu balanced outputs through a detachable terminal block.

The SF-TPR24A features bridging inputs, allowing it to be connected to the LOOP OUT jack of other receivers. The bridging input circuits used in all FORMAT-A twisted pair receivers allow connection of up to 10 receiver outputs for each cable pair. The possibility of multiple receiver locations adds enormous flexibility in the design of audio routing systems using RDL FORMAT-A products.

The SF-TPR24A may be powered directly from a 24 Vdc power supply using either the power jack or the detachable terminal block. Local power connected to the module is also fed to all modules connected to the eight INPUT RJ45 jacks. Power for each RJ45 connector is protected against wiring faults by an automatically resetting fuse. Front-Panel green LEDs indicate valid module power on each RJ45.

Key features:

• Eight Separate Three-Pair Format-A Receiver Sections

• Receives up to 24 Audio Channels

• Three +4 dBu Balanced Outputs per Section

• Detachable Terminal Block Outputs

• Audio Outputs for All Three Pairs (A, B and C) per Section

• Local Power Feeds all Modules Connected to INPUTs

• Wiring Fault Protection by Automatic Resetting Fuse

• Local Power Input on Terminal Block or dc Power Jack

• Green LED per Section Indicates Validity of Module Remote Power

• Studio-Quality Precision Active Balanced Circuitry

Manufacturer part number SF-TPR24A.

Key features

Inputs (8)

RDL Format-A

Input Connections

RJ45

Format-A Signal Pairs Used (3)

A, B, C (per section)

Outputs (24)

150 Ω Balanced

Output Connection

Detachable Terminal Block (Balanced)

Output Level

+4 dBu Bal. nominal, +22 dBu Max

Frequency Response

10 Hz to 50 kHz (± 0.1 dB)

THD+N

< 0.005%

Technical specifications

Connectivity
Inputs (8)RDL Format-A
Input ConnectionsRJ45
Outputs (24)150 Ω Balanced
Output ConnectionDetachable Terminal Block (Balanced)
Output Level+4 dBu Bal. nominal, +22 dBu Max
Power Connections (2)Power Jack; Detachable Terminal Block
Power & Physical
Dimensions8.74" (22.2 cm) W; 1.68" (4.27 cm) H; 5.78" (14.68 cm) D
Shipping Weight2.66 lbs.
General
Format-A Signal Pairs Used (3)A, B, C (per section)
Frequency Response10 Hz to 50 kHz (± 0.1 dB)
THD+N< 0.005%
Noise below +4 dBu< 90 dB
CrosstalkBelow noise floor (20 Hz to 20 kHz, +4 dBu input)
Headroom above +4 dBu> 18 dB
CMRR> 80 dB (50 Hz to 150 Hz)
Indicators (8)Power (1 per RJ45)
Ambient Operating Environment0° C to 55° C
Power Requirement24 Vdc @ 360 mA plus connected loads (1.6 A max)

Documents

Delivery & returns

Estimated delivery 9 Sept - 13 Sept. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.

Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.

Full delivery & returns policy

Bought in the UK, backed in the UK

  • This item is sourced through UK distribution and ships to you from within the UK, so the order never crosses a customs border.

  • The manufacturer warranty is honoured here in the UK. If something fails, you deal with us, not with an overseas seller in another time zone.

  • Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.

  • Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.

  • Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts: no currency conversion and no surprises at the door.

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Payment & security

Pay securely by card. Education customers can apply for a 30-day purchase order account.

Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice, with no card payment required. Purchase orders and credit terms are for education customers only.

All transactions are processed over an encrypted, secure checkout.

Purchase order & invoice terms

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