Background
I first got involved in CB Radio in 1980 with this transceiver and a matching boot lid mounting antenna, although i ran a base station set up as i did not have a car. The whole CB radio fad was imported from the USA. CB Radio was illegal at the time in the UK. The UK government claimed that there was no available space on the spectrum for CB and attempted to discourage it including some prosecutions. When i first started in Edinburgh i was among the first 30-40 or so users.
Because CB was illegal i had to be careful when i transmitted and for how long. The Post Office who were responsible for tracking down illegal transmitters of all kinds at the time had detector vans travelling around trying to catch users. They were fairly easy to spot on the main roads because they were often in vans and cars with around 6 antennae on the roof.
A few months after getting the CB i purchased a DX27 base loaded helical wound antennae. Although intended as a mobile antennae i found it particularly useful operating as a base station as i mounted it on my dad's greenhouse which provided a great ground plane and it folded down level with the frame so it did not attract too much attention from the neighbours!
Because CB was illegal i had to be careful when i transmitted and for how long. The Post Office who were responsible for tracking down illegal transmitters of all kinds at the time had detector vans travelling around trying to catch users. They were fairly easy to spot on the main roads because they were often in vans and cars with around 6 antennae on the roof.
A few months after getting the CB i purchased a DX27 base loaded helical wound antennae. Although intended as a mobile antennae i found it particularly useful operating as a base station as i mounted it on my dad's greenhouse which provided a great ground plane and it folded down level with the frame so it did not attract too much attention from the neighbours!
This shows the lower half of the casing removed showing the component side of the main circuit board.
The metal casing on the left of the circuit board contains the Phase Lock Loop(PLL) frequency generator for the 40 CB channels.
The audio amplifier for the transmitter and Public Address(PA) function is mounted in the middle of the circuit board on a copper heat sink.
The Radio Frequency(RF) amplifier is mounted on the rear of the case behind the PLL housing.
This shows the solder side of the circuit board which is mounted at the top of the case. Interestingly the unit is sitting the correct way up so in effect all the components are suspended from rather than mounted on the circuit board.
This shows all the components supplied with the CB when it was purchased. The microphone plugs into the side of the case.
The plastic bag contains a mounting clip for the microphone plus all the screws and bolts needed to mount the CB using the cradle/bracket shown lying across the case.
I still have all the original packaging and documentation that came with the CB. As the original destination of the unit was the USA all the documentation refers to the FCC Regulations(1976) and US law.