Monthly Archives: February 2017

Chinese corporation bids to acquire Sepura

This news is making quite a buzz within the stock market forums, With two of our big players in our industry set to merge, this is huge news! Yes, Sepura have had their problems this year and Hytera have increased their market share, but we are not sure is this is good news or bad?

Another Asian corporation is set to hoover up a Cambridge UK technology company in a state of financial flux.

Communications technology business Sepura confirms it is in talks with Chinese company Hytera Communications Corporation Ltd.

It will be an all-cash deal but the acquisition price will be moderate because digital radios company Sepura is in a mess because of cash liquidity issues.

Sepura revealed the takeover talks after its share price spiked more than 25 per cent having nosedived in recent times due to cashflow issues and order delays.

Hytera is a world leading solution provider of professional mobile radio communications and operates globally.

Late today, Sepura issued a statement on London Stock Exchange confirming it was in preliminary talks with Hytera regarding a possible offer for the entire issued and to be issued share capital of the company.

Hytera confirmed to the Sepura board that any offer was likely to be solely in cash. The usual caveats were issued that there was no certainty any deal would go through and shareholders would be updated on new developments.

Founded in 1993 in Shenzhen, China, Hytera has grown to be a key player in the PMR (Professional Mobile Radio) communication industry with a large customer base in more than 120 countries and regions across the world.

In China, Hytera’s market share ranks first among Chinese manufacturers while globally Hytera has reached second place in the overall terminal category.

As one of the few corporations that masters TETRA, DMR and PDT technologies, and produces all series of products and solutions of all these mainstream digital protocols, Hytera leads in the draft of digital trunking standard in China.

Its acquisition of the Rohde & Schwarz TETRA business in August 2011 further strengthened its competitive edge in TETRA market.

Hytera has established a global sales network with 30 branches in the US, UK, Germany, Australia, Brazil and other territories and through  600+ partners across the world.

Hytera has an R & D team of over 1200 engineers in five research centres. Sepura won the Business Weekly Awards Business of the Year title in March after a record-breaking

2015 but hit liquidity problems this summer and has temporarily lost its CEO Gordon Watling to ill health.

How Many Walkie-Talkies Can Operate on the Same Channel?

Theoretically, you can use an unlimited amount of walkie-talkies on the same channel (although in practice you might experience a few problems if you took that suggestion literally). Basically, there isn’t really a set limit. You could use as many as you like provided they are set up correctly. Anybody set to the right channel and in range at the time of transmission would then be able to pick up the signal and respond to it.

Most radios have access to 8 channels. These channels each have 38 separate ‘identification tones’. The user sets his/her channel up with the desired tone and then only other users who know the channel/tone will be able to hear the transmissions. As a result, there are, in any given area, about 304 different combinations, so signal interference is unlikely to affect you.

Please do not interpret this answer as saying that your radio has access to 304 possible channels. It does not. It will likely only have access to 8. Some less reputable manufacturers tend to falsely imply access to 304 channels; this is simply not the case. You will have access to 304 possible tone/channel combinations, that’s all.

To better explain the CTCSS codes and how they work; we’ll include a little information from’s FAQ page.

“CTCSS stands for “Continuous Tone Coded Squelch System”. These codes are also often called “Privacy codes” If a CTCSS tone is selected; a CTCSS sub-audible tone is transmitted along with the regular voice audio by the transmitting radio. The receiving radio, set to the same CTCSS tone, will only receive audio if it contains that sub-tone. Interference from other users on the same frequency is therefore rejected (unless they are also on the same sub-tone). This is a way of allowing groups of users of walkie-talkies on the same channel to avoid hearing messages from other nearby users”.

So, in conclusion, you can probably use as many walkie-talkies as you like on the same channel. As long as the units in question are of the same type (either VHF or UHF) and have the same CTCSS setup, then you simply shouldn’t have a problem. You also shouldn’t suffer from signal interference due to other users (although you may still experience signal loss/interference/degradation from other sources). We have talked about combating signal loss elsewhere, so please see the other questions if you have any problems in this area.

I Bought a Two-Way Radio With a Range of 25 Miles…Why Won’t It Work?

Sorry, but you’ve been had. Although many manufacturers boast that their radios can reach amazing distances, this is, in almost every instance we’ve encountered, a fallacy.

How is this legal, you may ask?

Essentially, your radio quite probably could work over a range of 25 miles, but that is a theoretical estimate, working on the assumption that the myriad variables that affect two-way radio signal (such as atmospheric conditions, topography, objects in the way and etc) are simply not in effect.

All of them. At the exact same time.

So, assuming that you used your two-way radio in a vacuum, where weather didn’t exist and no obstacles, man-made or otherwise, were present, you would be able to communicate with someone else who was further away in that impossible vacuum, maybe even 25 miles away, but otherwise? Forget it.

The fact is that the average two-way radio has a range of between one and two miles and not much more (maybe three, but we’re not making any promises). CB radio fares significantly better, largely because it makes use of large aerials. Now, Signal-boosting equipment can be used to improve your two-way’s performance (for example, repeaters), but such equipment is expensive and hard to obtain for legal reasons.

There are, however, a few factors that can have an affect on your radio’s range. The frequency being used, the power output, the size of the antenna, the complexity of the signal being sent, signal interference, background noise and (as we wrote earlier) objects in the way are all factors that can improve (or hamper) your efforts to get your signal to reach as far as possible.

So, talking on your radio whilst in the car will have a deleterious affect on your signal, as will deliberately walking through wooded areas or places with a lot of rocks/mountains if you can take an easier path.

However, a larger antenna (if you’re tech orientated, the antenna can be replaced with a better one – although this should only be attempted if you are

  1. a) Sure about licensing laws


  1. b) Tech savvy enough to void the warranty and not regret it later, can really add a few hundred meters to a radio’s range, as can a switch in frequencies.

Also, your choice of VHF or UHF radio will have an affect as well, a UHF signal, for example, generally penetrates buildings and objects better than a VHF signal, whereas VHF is better for outdoor use where there is a lot of open space to transmit across.

Having said/written that, even in optimum conditions, you are extremely unlikely to transmit over a distance of 25 miles. Sorry.

As an aside, mobile phones don’t suffer from this lack of coverage, largely because cell towers are in place that bounce the signal from one to the other and thus carry it across a far larger area, your mobile is still your best bet to break that 25 mile mark, we’re afraid.

If you really must use radio communications over long distances, we recommend going to the Website

Hope that helps.

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