Monthly Archives: July 2015



In my blog from January 25-2015, I wrote about a new product from Midland, the ENERJUMP.



You can find detailed information about the ENERJUMP on our website.

Basicly the ENERJUMP is a kind of PowerBank. If you visit a trade show in USA or Far East you will notice that PowerBanks are hot business.

Everyone wants to make them and they all want to sell these.


We all know President from their famous line of CB products. Not often they step outside their core business. But now they do as they introduce three types of PowerBanks. These are not just a PowerBank, these are Portable Power and Roadside Assistance Kits.


There are 3 models available:


• MPB6000


• MPB8800



• MPB12000

Basicly the three kits are identical. It is a PowerBank to jumpstart a car, it includes a flashlight and it allows you to charge electronic devices.



Charging Electronic Devices and Flashlight

But the President Multi-Pack Booster also includes a compressor !

The difference in the 3 models is the capacity of the battery, which is the heart of each PowerBank.


Jumpstart of a car with a President MPB12000

If used to jumpstart a car all three models will deliver a peak of maximum 400 Ampere! But the total capacity of the battery pack inside the Powerbank is different for these 3 models.
• MPB6000 has a capacity of 6000 mAh
• MPB8000 has a capacity of 8800 mAh
• MPB12000 has a capacity of 12000 mAh.




Compressor with meter

The compressor allows you to inflate the tires of your car, or the tubes of a bike, or an inflatable boat. If you need an item to fill it with air you can use the MPB to
inflate that product.


All three models are sold in a handy carry case. It will allow you to keep all items together in one tool box.

MPB comes in a handy tool case


President MULTI-PACK BOOSTERS come complete with the jumper cables to charge the car battery. But also an USB Charging Cable, 12VDC cable and 230VAC wall charger are included.

All cables are included

Certainly during vacation time it is a safe feeling to know that you have a PowerBank in your car. Just in case your battery or phone/tablet is dead. Or if you want to assist someone who needs help.

I remember when my kids were small and each summer I had to inflate boats, tires, air-mattresses etc. I inflated so much I got dizzy now and then. If there ever come grandchildren I will have a Multi-Pack Booster quite close, I better use my breath for talking.

To all of my readers: I hope you will enjoy your vacation time and the summer!


In the past each country had his own Post and Telegraph Service. These were owned and operated by the government. Around the 1990’s the private cell phone networks were build and most of the Post and Telecom agencies were privatised.
All these buildings had large antennas on the roof to transmit messages all over the world. At first it were only wireless morse and telegram communication antennas. Later on there were also commercial communication services and radio monitor services that needed antennas.


Last week I visited Palermo on the Italian island Sicily. Walking through the center of this city I saw the imposing Post and Telegraph building with some nice antennas on the roof. In the first part of the 1900’s in all European countries this kind of big buildings were constructed to house the telecom services.
All of them with lots of antennas on the roof.



There was a big ground plane antenna, no idea for what frequency.


Most interesting to see was this directional type antenna on a rotor.


This looks like a more common antenna for higher frequencies, probably WLAN or WIFI.
It would have been great to enter the building, visit the roof and have a specialist tell me for what frequencies exactly these antennas are used.
The Post and Telecom buildings slowly disappear as new services took over the old ones. The antennas for the new services get smaller as the frequencies get higher. But the amount of antennas for wireless services all over the world is growing rapidly. The number of masts with many antennas for the different operators and many services is still growing.
So even when the old buildings with antennas disappear, there still will be a lot to see when you look in the air.
And if you by chance know the frequencies of the antennas on the photo’s, feel free to let us know.