CatfishKirk
Member
Today I picked up a new mosquito linear amplifier for $5 from a local. It is made by cte industries. Anybody know anything about this thing...I cant find much on the internet. Thanks
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New Mosquito Mobile Linear
- Thread starter CatfishKirk
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Look over at CB Tricks .com
http://www.cbtricks.com/Amp/miscellanous/graphics/mosquito.jpg
Jay in the Mojave
http://www.cbtricks.com/Amp/miscellanous/graphics/mosquito.jpg
Jay in the Mojave
QUOTE=CatfishKirk;1748423]Today I picked up a new mosquito linear amplifier for $5 from a local. It is made by cte industries. Anybody know anything about this thing...I cant find much on the internet. Thanks[/QUOTE]
Cheaply made, illegal on cb, that's about it. :roll:
73,
n9zas
Cheaply made, illegal on cb, that's about it. :roll:
73,
n9zas
Uh oh, one look at the schematic (hand drawn speaks volumes) and I say $5 won't buy much of a signal but it WILL buy interference problems. Well, not too much to pay for a perfectly good doorstop. CTE, somebody's initials and the Industries are in his basement. Hmmm, no mystery why he called it a Mosquito, barely above flea power and an annoying pest.
Give me a big toob with handles and I'll be happy. (;->)
Give me a big toob with handles and I'll be happy. (;->)
K9WG
Member
Not to mention only one transistor and no power supply regulation. They really need to name these non-leaner amps...
A 2SC1307 and 2SC1969 were popular CB transmitter PA final transistors and I find it amusing you would have an amplifier that has the same PA transistor as the radio feeding it. What a joke.
prcguy
prcguy
4saturn
Member
Mosquito Amplifier
Just had to answer this one. Prcguy mentioned why would you use this amp when radios already have this transistor as a final. The Mosquito amp became popular in the late 23 channel era into the early 40 channel era along with the KLV 40 amp. This amp was not intended to be used with a "sideband" radio that uses a 2sc1969 or a 2sc2312! Designed for AM only radios with 4-5 watts output. Essentially the "driver" transistor of a sideband radio. This amp would increase the output to 20-25 watts. When you can multiply your output 4 times you increase your signal 6 decibels. 6 decibels equals approximately 1 S unit. Not bad for an amp that can be powered by a small power supply or cigarette lighter, can literally fit in your pocket, very inexpensive and cheap to repair. You have to place your mindset back into the 1970's, just entering into cb radio, Smokey and the Bandit, C.W. McCall songs, and all hype of the time. Most of those cber's did not interest themselves with radios with sideband and the bigger 2sc1969 or 2312 final.
Just had to answer this one. Prcguy mentioned why would you use this amp when radios already have this transistor as a final. The Mosquito amp became popular in the late 23 channel era into the early 40 channel era along with the KLV 40 amp. This amp was not intended to be used with a "sideband" radio that uses a 2sc1969 or a 2sc2312! Designed for AM only radios with 4-5 watts output. Essentially the "driver" transistor of a sideband radio. This amp would increase the output to 20-25 watts. When you can multiply your output 4 times you increase your signal 6 decibels. 6 decibels equals approximately 1 S unit. Not bad for an amp that can be powered by a small power supply or cigarette lighter, can literally fit in your pocket, very inexpensive and cheap to repair. You have to place your mindset back into the 1970's, just entering into cb radio, Smokey and the Bandit, C.W. McCall songs, and all hype of the time. Most of those cber's did not interest themselves with radios with sideband and the bigger 2sc1969 or 2312 final.
Hello 4saturn: Great Post thanks a million for sharing with us a little bit of CB History.
Yes 6 dB is one S-Unit, which is enough to double you range a significant amount of power increase. Kind of neat from a small one transistor package.
There use to be a mimeograph (copy of a copy of a copy) type of thing paper work showing how to make a one tube base linear amp, using a single 6LQ6/6JE6C called a Venus Amp. Many of these small Venus Amps were made, and worked great pushing out a mere 20 to 30 watts.
Again great post.
Jay in the Mojave
Yes 6 dB is one S-Unit, which is enough to double you range a significant amount of power increase. Kind of neat from a small one transistor package.
There use to be a mimeograph (copy of a copy of a copy) type of thing paper work showing how to make a one tube base linear amp, using a single 6LQ6/6JE6C called a Venus Amp. Many of these small Venus Amps were made, and worked great pushing out a mere 20 to 30 watts.
Again great post.
Jay in the Mojave
Dawn
Member
Another factor to add also related to the period were many transceivers, especially low end, channelized units while conforming to the the 5W input requirements, were notoriously ineffecient with no more then 2 1/2W output out of the box. Typical higher end rigs that were much more efficent, you were lucky to get 3.2-3.5 watts carrier. There were also many handhelds in the 1-5 W input class that had an external antenna output and quite a few on the air using outdoor antennas as starter cb's. CB's seem cheap nowadays as they sell for what they did in the 70's, sometimes much less. Typical 23 channel AM rig was around $150. Multiply that around 4.5 to 5 times for an equivelent in todays dollar and there was stagflation during the nixon and post nixon erea with min wage around $1.65. The FCC didn't change the rules until just before the advent of the 40 channel units where the power output was the official number fixed at 4W irrespective of power input
Inexpensive little amps sold rather well. Some were derivatives of amateur power boosters for QRP rigs which was the rage around that time starting with the "mountaineer" article in QST and TenTec's power mite and subsequent early solid state hf sideband and Heathkits's H7. High power solid state PA's were rather rare still in amateur or marine units. Full 100W or so rigs were initally offered by Swan's monoband units and later through Cubic as a 10-80 righ partially based on a mil designed PA by Southcomm for their backpack units. SGC introduced the first solid state 100W marine about the same time which was a crystal controlled channelized unit. It wouldn't be until the end of the 70's and early 80's that high power solid state PA's came into their own albeit with a lot of problems that tubes didn't have. Things like this need to be placed into context of the times that appear silly today.
Inexpensive little amps sold rather well. Some were derivatives of amateur power boosters for QRP rigs which was the rage around that time starting with the "mountaineer" article in QST and TenTec's power mite and subsequent early solid state hf sideband and Heathkits's H7. High power solid state PA's were rather rare still in amateur or marine units. Full 100W or so rigs were initally offered by Swan's monoband units and later through Cubic as a 10-80 righ partially based on a mil designed PA by Southcomm for their backpack units. SGC introduced the first solid state 100W marine about the same time which was a crystal controlled channelized unit. It wouldn't be until the end of the 70's and early 80's that high power solid state PA's came into their own albeit with a lot of problems that tubes didn't have. Things like this need to be placed into context of the times that appear silly today.
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