ICOM IC 7800 MODS MANUAL
ICOM IC 7800 MODS PRO

However,analogue radios such as the IC will still be available in the second-hand market for years to come.ДЇrom the ham radio standpoint, the IC was an accident of history which turned out very well indeed. Radio architecture is now at the point where classical analogue designs are no longer cost-effective to manufacture, and DSP will only get faster and better.

ICOM IC 7800 MODS PRO

It even has a tuneable pre-AGC notch filter, unfortunately omitted from the The Pro II had significantly improved strong-signalhandling as compared to the Pro. It should be noted that reciprocal mixing noise a function of DDS spectral purity is a very strong attribute of the IC Inan ICPro replaced theand I found it even better all around. Another situation which frequently arose was trying to copy a check-in station running barefoot to an indifferent antenna often, his signal was in the noise. The Icom Net has since moved to I found that the IC's cascaded 1.

At times, adjacent-channel interference became a severe issue, what with our frequency sandwiched between the 'hot-spots' which used to occupy and kHz. I expected the regulator to drop very suddenly as I adjusted R6 on the regulator board.An IC graced my shack from mid until late Then, I bought an 'original' IC So I reluctantly let the 'old girl' go. When making the 30V regulator adjustment, you must monitor the DC voltage across the resistive load. The gold Dale resistors in the upper left are 0. For the 15V supply, you need only a 40 watt resistor in the range of 5. Movement of L7 was transmitted to the circuit board trace through the left lead, causingthe trace to flex and break. In stock form, L7 was held in position via one heavy lead on the left side of L7, and the other heavy lead which can be seen soldered to the lead from T2. This picture was takenprior to the RTV application. I then tinned the newly bared copper trace area. You can clearly see that the trace is broken from the movement of L7. The blue-shaded rectangle at L7 represents the approximate size of L7, while the smaller inner rectangle is the footprint where L7 contacts the circuit board, and I covered that portion of L7 with RTV compound. Icom IC 781 Memory Battery ReplacementД¬omponents C4, L11, R35, C28 are most prone to heat damage according to Icom, and should be replaced. The broken trace is on the other side of the board where indicated.

It is on the underside of the board, about1' long. Notecarefully which module uses the spacer, since there are three other regulators that do not use one. It's directly next to the final amplifier PA unit.

ICOM IC 7800 MODS MANUAL

The service manual is a must for such a project, and I had no luck finding an original for sale. Since the nearest service site was miles away, I decided to tackle the job myself. If you prefer to be anonymous write it in the message.I recently acquired an early IC that a local ham had for sale.

If the message is relate to an article, the article can be selected next to each message.Д¬lick here to write a new message or comment for IC-7800 Note that the message is not related to any article.Д¬lick here to see the article list for IC-7800.Дo you have any tricks, modifications or constructions for homebrewed equipment that are not on mods.dk, please send the information to mods.dk. This forum message list include all message for that is related to IC-7800, this include message that also is related to articles. Note that page can take a while to load, if there are many modifications.

Icom ic-7800 mods