In the world of television reception, the antenna you choose can make the difference between crystal-clear viewing and frustrating signal dropouts. If you’ve been researching options for improving your TV reception, you’ve likely come across log periodic TV aerials. But are they actually superior to other antenna types? Let’s dive into this question and explore everything you need to know about log periodic aerials to help you make an informed decision for your home entertainment setup.
In this article I will sometimes refer to log periodic aerials as “Logs” as its shorter and simpler.
What Are Log Periodic TV Aerials?
Before we can determine if log periodic TV aerials are better than other options, we need to understand what they actually are. Unlike simpler antenna designs, Logs have a distinctive appearance that reflects their sophisticated engineering.
The Basic Design and Structure
Log periodic TV aerials feature a series of dipole elements arranged along a central boom in a pattern that follows a logarithmic scale (hence the name “log periodic”). If you look at one, you’ll notice multiple cross elements of varying lengths, with the shortest elements at the front and progressively longer elements toward the back.
This isn’t just for show—each element in a log periodic aerial is carefully sized and positioned to receive specific frequencies. The varying lengths allow the antenna to effectively capture signals across a wide range of the frequency spectrum, which is crucial for receiving multiple TV channels broadcasting on different frequencies.
How Log Periodic Antennas Work
The genius of log periodic antennas lies in how they handle different frequencies. When a TV signal reaches the antenna, only the elements that resonate with that particular frequency will actively receive it. Essentially, different parts of the antenna become active depending on the incoming signal’s frequency.
Think of it like having multiple specialized antennas combined into one device. When a UHF signal arrives, the shorter elements at the front handle reception. When a VHF signal comes in, the longer elements toward the back take over. This selective activation is what gives Logs their impressive bandwidth capabilities.
The Main Advantages of Log Periodic TV Aerials
Now that we understand the basics, let’s examine why many homeowners and TV enthusiasts opt for Logs over other antenna types.
Exceptional Bandwidth Performance
Perhaps the most significant advantage of log periodic TV aerials is their wideband performance. Unlike some antennas that excel at receiving either UHF or VHF signals, log periodic designs can effectively capture both with minimal loss in signal strength across the entire spectrum.
This broad frequency response means you can receive channels broadcasting on any frequency within the TV band without needing separate antennas or compromising on signal quality. For viewers in areas where TV stations broadcast on diverse frequencies, this versatility is invaluable.
I recently installed a log periodic aerial for a client who had been struggling with inconsistent reception. They were amazed that they could suddenly access channels they hadn’t even known were available in their area—all because their new antenna could effectively receive signals across the entire broadcast spectrum.
Directional Capability and Gain
Log periodic antennas are highly directional, meaning they focus their reception capability toward the direction they’re pointing. This directionality offers two major benefits:
First, it provides good gain (signal amplification) in the forward direction, helping to pull in distant or weak signals more effectively than omnidirectional antennas.
Second, it rejects signals coming from other directions, which helps minimize interference and ghosting. If you live in an area with multiple broadcast towers in different locations, this directional selectivity can be extremely useful when properly positioned.
Durability and Weather Resistance
The open design of Logs gives them excellent wind resistance compared to panel antennas or satellite dishes. With fewer flat surfaces for wind to push against, they’re less likely to shift position during storms or high winds, maintaining consistent reception even in challenging weather conditions.
Additionally, quality Log periodics are typically constructed from robust materials like aluminum or weather-resistant alloys that stand up well to sun, rain, and snow. This durability translates to a longer lifespan and fewer maintenance issues, making them a reliable choice for long-term installation.
Comparing Log Periodic Aerials to Other Types
To determine if log periodic aerials are truly “better,” we need to compare them directly with alternative antenna options. Let’s examine how they stack up against the most common alternatives.
Log Periodic vs. Yagi Antennas
Yagi antennas (also called Yagi-Uda arrays) are perhaps the most common TV aerials and are often confused with log periodic designs due to their similar appearance. Both have multiple elements arranged along a boom, but there are crucial differences:
- Bandwidth: While Logs offer broad frequency response, Yagi antennas are typically optimized for a narrower frequency range. This makes Yagis excellent if all your desired channels are broadcast on similar frequencies, but less versatile for receiving channels across the entire TV spectrum.
- Gain: Yagi antennas generally provide higher gain than log periodic designs, making them potentially better for receiving very distant signals, (helped by a back reflector) — but only within their optimized frequency range.
- Cost: Yagi antennas are usually less expensive due to their simpler design and more standardized construction.
The verdict? If you need to receive channels across many different frequencies, a log periodic aerial is likely superior. If you’re primarily concerned with maximizing reception from distant stations all broadcasting on similar frequencies, a Yagi might be the better choice.
Log Periodic vs. Indoor Antennas
Indoor antennas have come a long way in recent years, with conventional flat-panel designs offering surprisingly good performance in strong signal areas. However, compared to log periodic aerials:
- Signal strength: Outdoor Logs will almost always outperform indoor antennas because they can be mounted higher, avoiding signal obstacles like walls, furniture, and other household items.
- Interference: Indoor antennas are more susceptible to interference from household electronics, LED lights, and other devices that can degrade TV signals.
- Convenience: The clear advantage of indoor antennas is ease of installation—no climbing on roofs or running cables through walls required.
If you live in an area with strong TV signals and want something simple, an indoor antenna might suffice. But for reliable reception, especially in rural or challenging reception areas, a Log will deliver significantly better performance.
Log Periodic vs. Satellite Dishes
Satellite dishes operate on an entirely different principle, receiving signals from satellites rather than terrestrial broadcast towers. This makes for an apples-to-oranges comparison, but there are still relevant considerations:
- Channel selection: Satellite TV provides access to many more channels than terrestrial broadcasts but requires a paid subscription.
- Weather impact: Satellite reception can be affected by heavy rain or snow (known as “rain fade”), while Logs typically maintain consistent reception in most weather conditions.
- Installation complexity: Both require professional installation for optimal results, but satellite dishes often need more precise alignment.
Logs are better for receiving free-to-air terrestrial broadcasts, while satellite dishes are necessary if you want access to satellite TV services. Many households actually use both for maximum programming options.
Installation Considerations for Log Periodic Aerials
Even the best log periodic aerial won’t perform optimally if poorly installed. Here are the key considerations for maximizing your antenna’s performance. Also, if fitting on a caravan or canal boat, you will need to take into consideration the position changes of the boat or caravan. Being able to change the position and polarisation of the antenna is going to be critical.
Optimal Positioning and Direction
The highly directional nature of Logs means proper alignment is crucial. It’s recommended that all Log Periodic antenna should be pointed directly toward the broadcast towers you want to receive. This often requires:
- Researching the location of broadcast towers in your area
- Using a compass or digital signal finder to precisely align the antenna
- Making small adjustments and testing reception until optimal positioning is achieved
Height also matters significantly. In general, higher mounting positions result in better reception by clearing obstacles that might block signals. Every additional meter of height can make a noticeable difference, especially in challenging reception areas.
Mounting Options and Challenges
Log periodic aerials can be mounted in several ways:
- Roof mounts: Typically provide the best reception but require secure attachment to roof structures
- Wall mounts: Good alternative when roof mounting isn’t possible
- Chimney mounts: Often offer good height but must be securely strapped
- Pole mounts: Versatile option that can be positioned anywhere on your property
The primary challenge with mounting Logs is their size and wind resistance. While they have less wind loading than some antenna types, they still need robust mounting hardware that can withstand years of environmental stresses without shifting position.
I recommend investing in high-quality mounting brackets and having your installation professionally checked if you’re not confident in your DIY skills. A secure mount will ensure your aerial maintains optimal alignment for years to come.
Cost Analysis: Are Log Periodics Worth the Investment?
Logs typically cost more than basic antenna designs, with prices ranging from £50-£200 depending on size, quality, and features. Is this premium worth paying?
The answer depends largely on your specific reception needs and location. Consider these factors:
- If you live in an area with weak signals or multiple broadcast towers in different directions, the superior performance of a log periodic aerial likely justifies the higher initial cost.
- For long-term installations, the durability and reliability of log periodic designs often result in lower total cost of ownership despite the higher purchase price.
- If you’re in an area with very strong signals and all channels broadcast on similar frequencies, you might achieve satisfactory results with a less expensive antenna.
Remember that the antenna is just one component of your total installation cost. Cables, mounts, amplifiers (if needed), and installation labor often exceed the cost of the antenna itself. Given these other expenses, it usually makes sense to invest in a quality antenna rather than trying to save a relatively small amount on this crucial component.
When to Choose a Log Periodic Aerial for Your Home
Based on our analysis, log periodic TV aerials are particularly well-suited for:
- Locations where TV channels broadcast across a wide range of frequencies
- Areas with moderate to weak signal strength
- Homes that need to receive signals from multiple broadcast towers
- Installations in windy or harsh weather environments
- Viewers seeking a long-term, low-maintenance solution
On the other hand, you might consider alternative antenna types if:
- You only need to receive a few channels all broadcasting on similar frequencies
- You’re in an extremely strong signal area
- Your budget is severely limited
- Physical size and appearance are major concerns
Conclusion: Making the Right Choice for Your TV Reception Needs
So, are log periodics better than other antennas? The answer isn’t simply yes or no—it depends on your specific requirements and situation. What we can say with confidence is that log periodic aerials offer an excellent combination of wide bandwidth, good gain, and durability that makes them well-suited for many home TV reception scenarios.
If you’re looking for an antenna that can receive the full range of available channels, perform reliably in various conditions, and last for many years with minimal maintenance, a log periodic aerial is likely an excellent choice. The higher initial cost compared to simpler antennas is often justified by superior performance and longevity.
Remember that proper installation is just as important as the antenna itself. Take time to research broadcast tower locations in your area, invest in quality mounting hardware, and ensure correct alignment. These steps will help you get the most from your log periodic aerial and enjoy clear, reliable TV reception for years to come.
Frequently Asked Questions
1. How long do log periodics typically last?
A quality log periodic aerial properly installed can last 10-15 years or more. The actual lifespan depends on construction quality, local weather conditions, and how securely it’s mounted. The main components that might deteriorate are connection points and baluns rather than the antenna elements themselves.
2. Can I install a log periodic aerial myself, or should I hire a professional?
While DIY installation is possible for those comfortable working at heights and with basic tools, professional installation ensures optimal positioning and secure mounting. Consider your experience level, the height of the installation, and local building regulations. For roof installations especially, professional installation often provides better results and safety.
3. Will a log periodic aerial work in my heavily wooded area?
Trees can significantly impact TV reception by blocking and absorbing signals. A log periodic aerial mounted as high as possible will perform better than most alternatives in wooded areas, but may still struggle if dense foliage directly blocks the signal path to broadcast towers. In extremely challenging locations, you might need a combination of a very high mounting position and a preamplifier.
4. Do I need an amplifier with my log periodic aerial?
Not necessarily. Start without an amplifier and only add one if reception is poor. Amplifiers boost signal but also boost noise, potentially degrading picture quality if signal strength is already adequate. They’re most helpful for very long cable runs (over 50 feet) or in fringe reception areas. If you do need one, a masthead amplifier mounted near the antenna usually performs better than inline amplifiers near the TV.
5. Can a log periodic aerial receive both digital and analog TV signals?
Yes, log periodic aerials can receive both digital and analog broadcasts. The antenna doesn’t differentiate between signal types—it simply captures radio waves across its designed frequency range. The conversion between analog and digital signals happens in your TV or set-top box, not in the antenna. This versatility means a good log periodic aerial will remain useful even as broadcasting technologies evolve.