cheap frequency counter generators
Science & Technology
Introduction
Recently, I stumbled upon a fascinating piece of equipment while searching for a frequency counter display. Specifically, I was hunting for one that had buttons on the front instead of the back. This search led me to discover a variety of 2 to 2800 MHz frequency counters that can read frequency, tones, and DCS. While this is quite impressive, it left me wondering about their accuracy compared to some radio frequency counters.
Many radios have built-in frequency counters that perform similar functions, but their accuracy can sometimes be questionable. So, I took a deep dive to understand the offerings better.
Potential Utility
These frequency counters can be useful in various scenarios, especially if you're working on radios regularly. I found some with prices around $ 20 that offer pretty good resolution. These models, such as the PLJ 8 or PLJ 6, seem like they provide reasonable functionality at a relatively low cost.
For instance, if you need to be close to a specific frequency for your work, these counters can help. While they may not be lab-grade, they certainly serve the purpose for tasks that require a visual representation of frequency, like vintage radio displays.
Design and Integration Considerations
One notable issue with some of these counters is the position of the buttons. Many have buttons on the back, which complicates mounting them in a case. However, there are models with front-facing buttons that are better suited for integration into a project or enclosure.
Interestingly, there are also models with an extra digit for even better resolution, although these may cost slightly more. The displays also come in different colors, with blue or red being common options.
Additional Features
Some frequency counters can be programmed to read offset frequencies. For example, they can read the VFO (Variable Frequency Oscillator) frequency and calculate the actual frequency based on what is coming out of the VFO. This functionality can be particularly beneficial if you are working on CB radios or other types of communication devices.
There are also advanced models that include more digits for better precision. Given that they are being sold for around $ 100 or slightly more, these can be a great investment if frequent and accurate frequency measurements are crucial for your work.
Advanced Options
Advanced models come integrated with additional functionalities, like signal generators, which can offer perfect utility for more professional tasks. Some can display a wide range of waveform types and frequencies, and these are generally more expensive.
Market Variety
There seems to be a broad market for these devices, ranging from very basic to highly advanced units. Multiple options with different functionalities are available, some even sporting integrated signal generators or additional display capabilities.
While many users may find these devices more suitable for specialized tasks or hobbyist setups, it’s interesting to note the variety and capabilities they offer.
Keywords
- Frequency counter
- 2 to 2800 MHz
- Accuracy
- Radios
- VFO (Variable Frequency Oscillator)
- Signal generator
- Display resolution
- CB radios
- DDS (Direct Digital Synthesis)
- Button placement
FAQ
Q1: How accurate are cheap frequency counters? A: The accuracy can vary, but many are good enough for non-critical tasks. Higher-end models tend to offer better precision.
Q2: Can these frequency counters be integrated into existing projects? A: Yes, some models are designed for easy integration, particularly those with front-facing buttons and additional programmable features.
Q3: Are there frequency counters that also act as signal generators? A: Yes, there are advanced models available that function as both frequency counters and signal generators, often offering multiple waveform types.
Q4: What are some common uses for these frequency counters? A: They are commonly used in radio work, especially CB radios, as well as for testing and calibrating communications equipment.
Q5: Do these devices come with varying display options? A: Yes, many models offer displays in different colors like blue or red, and some have extra digits for higher resolution.