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Overlap Blocking Filter Pass 39-52
Product Code: PROOBF1B
- Overlap blocking filter Ch.39-52
- Used for blocking unwanted signals
- F-Type
- 1 input 1 output
Product Description
Overlap Blocking Filter Pass 39-52
A range of UHF band-pass filters from Proception, intended for blocking unwanted reception of transmissions from an adjacent region.
The introduction of high-power digital transmissions has led to problems with some receivers selecting multiplexes from out-of-area transmitters, leaving confused viewers watching the wrong regional services, or even listening to the wrong language!
Although this problem should be solved in the longer term by receiver developments, the use of band-pass filters can provide a quick, simple and cost effective solution, saving installers frequent call-backs.
Other Applications:
The entire range offers excellent cut-off below 470MHz and will help with problems from TETRA, telemetry and 70cm amateur band transmissions. Above channel 62 all versions will help solve GSM mobile phone interference problems, while the A and B models will additionally help suppress the forthcoming LTE (4G) signals.
Features:
- Optimised pass-bands cover most UK requirements in just four versions.
- Good out-of band rejection helps block TETRA and GSM, also LTE (4G), depending on model.
- F type connectors for good screening factor, helping prevent leakage around the filter.
- Good 75O match throughout the pass-band.
- DC blocked, no damage if inadvertently line-powered (24VDC max).
- Optional weatherproof outdoor housing available.
- Equipotential bonding terminal.
Technical Information:
| Product Code | Channels | Freq. | Lower | Upper1 | Insertion loss2 | Stopband Rejection3 | Conn. |
PROOBF1A | 21 - 30 | 470 - 550MHz | DC - 438MHz | 578 - 1600MHz | <3dB | >30dB | F |
PROOBF1B | 39 - 52 | 614 - 726MHz | DC - 578MHz | 762 - 1600MHz | <3dB | >30dB | F |
PROOBF1C | 48 - 62 | 686 - 806MHz | DC - 650MHz | 920 - 1600MHz | <3dB | >27dB | F |
PROOBF1E | 39 - 62 | 614 - 806MHz | DC - 562MHz | 920 - 1600MHz | <3dB | >27dB | F |
PROMHDCASE-S | Case for external installations | ||||||
1. Specified stop-band rejection is typically maintained to above 2GHz (but is not guaranteed above 1.6GHz).
2. Insertion loss may increase slightly at the pass-band edges, but will not exceed 4dB.
3. Typical stop-band rejection is around 35 to 40dB except close to the band edges.
Technical Specification
IEC or F Type
F-Type
Width
20mm
Depth
48mm
Height
80mm
Weight
0.04kg
Frequently Asked Questions
12/06/2025
08/06/2025
Service was good. VAT & postage high but we’re in the eu here. Havnt tried it yet.
31/05/2025
Ordered pole, bracket and end stopper online to collect from Rutland Road Sheffield. No problem ordering and all items were in stock. Was informed when order was ready and was served by friendly staff on collection.
26/05/2025
Fast and easy service with good quality goods
25/05/2025
Good intial service, products arrived safely. Downside, found the products about 50% cheaper at another retailer who are reliable and trusted, so not lower quality and the aerial which was recommended for my area is not suitable and the quality of reception is worse then the original aerial.
Google Company Reviews
01/07/2025
Needed a new masthead amp to improve signal distribution to multiple TVs. Supplier had just what I needed and delivered quickly.
30/06/2025
I needed a custom size aerial tube bent. Blake were quick off the mark to give a quote (very reasonable) and after paying, I had the finished item a few days later by courier. Excellent service, and the finished tube was accurately bent to the drawing.
29/06/2025
Excellent, good communication and fast shipping. Clear instructions to assemble. A++++
28/06/2025
Great service, fast delivery, good value, will use again
18/06/2025
I had trouble finding the items that I needed but eventually found Blake UK Ltd and they had them, plus at a very good price. Very impressed with their service . 10 out of 10
Very good Web site easy to search for what I needed Can highly recommend and have done so inasmuch as my freind Is going to make a purchase.