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PAØPGA

1

Yaesu

FRG-7700

Survival Guide

Содержание FRG-7700

Страница 1: ...PA PGA 1 Yaesu FRG 7700 Survival Guide...

Страница 2: ...lectivity 6 db 50 db AM wide 12 khz 25 khz AM medium 6 khz 15 khz AM narrow 2 7 khz 8 khz SSB CW 2 7 khz 8 khz FM 15 khz 30 khz 40db Stability Less than 1 khz from 1 30 minutes after power on Less tha...

Страница 3: ...stening with this receiver is very basic and you learn to listen instead to play with menu s You can obtain a used one in good condition for a affordable price on hamfests or on Internet Be careful if...

Страница 4: ...ly at the end of the tuning scala The receiver has normally a overlap at each range from between 30 to 50 khz at each side from the range for example at 7 Mhz the receiver tunes from 6950 to 8050 khz...

Страница 5: ...f the receiver is in a normal condition the changes should be minor Is the set very unsensitive check first the semiconductors in the circuit or there can be resistor or condensor failure that is much...

Страница 6: ...ct if the received station is tuned in the center of the filter The MSM 5524RS IC is very dependable and when normally used there is seldom a failure You see seldom a R 1000 with a display failure bec...

Страница 7: ...old cloth you have just to be careful with the front itself the paint there is quick damaged Thereafter you have black sides which don t look bad and scratches are for the most part invisible I did a...

Страница 8: ...8 PA PGA...

Страница 9: ...PA PGA 9...

Страница 10: ...10 PA PGA...

Страница 11: ...here was no trouble so I decided to use him The transformer is a common type with a switched primary 110 117 and 220 240V the secundary is 12V 2 Amps For the power supply board I had 2 options copy th...

Страница 12: ...out I discovered that there was a solder connection between the power pins of the two oscillators so they worked at the same time Maybe a previous owner didn t like to switch between USB and LSB While...

Страница 13: ...for the AM bands and others Modifications Fine tuning One of the things I missed on this receivers is a small RIT control or fine tuning a very handy device when I am listening in on a net or ragchewi...

Страница 14: ...module the only thing you have to change is pulling the wire off the plug and connect the plug to the memory module This modification is very elegant because there is no drilling or extra knobs necess...

Страница 15: ...You can change the IF filters for better ones a recommendation I did not change any CF01 CFW 455HT or CFG 455H bandwidth 6khz CF02 CFJ 455k6 or much more expensive Icom FL44A 2 3 khz CF03 CFS 455J 3kh...

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