#Ic 7800 mars mod manual#

The IC-9700 service manual even talks about a fast and slow circuit. But this comes at a cost The ALC circuit around POCV and FORLP in the IC-7610 and the IC-9700 has an extra op-amp. I recommend that you do not perform this modification for the following.

#Ic 7800 mars mod mod#

It is the responsibilty of each radio operator to make sure they are in compliance with FCC regulations regarding frequency usage, power output, and accepted equipment. Of course will the mod result in increased talk-power. only This modification permits the transmitter to operate on frequencies outside of the Ham bands for the benefit of MARS and other organizationвЂ™s members who have a legitimate and legal reason for transmitting outside of the Ham bands.

#Ic 7800 mars mod license#

This service is usually performed for licensed operators from the Military Auxiliary Radio Service (MARS) or Civil Air Patrol (CAP), but we do not require proof of license to order this service. Damage caused to the radio by transmitting too far out of its intended frequency range is not covered under warranty. To make an amateur radio capable of transmitting just outside of the amateur radio bands, this service usually involves the removal of a surface mount component inside of an amateur radio (along with some additional steps).Д«y having GigaParts perform this modification, you will retain the manufacturer warranty backed by GigaParts (should a problem arise from the modification we perform). The IC-7800 can be modified for general coverage transmit(1.6 thru 54.0 MHZ) (Frequency Range and Specifications cannot be guaranteed after modification) by following the CAP/MARS directions below: Remove top and bottom covers. Their accessories' warranties remain one (1) year. The Icom IC-781 roofing filter mod consists of a 6-pole, 4 to 5 kHz wide filter. The 7800 and the R9500 both have a two (2) year warranty. What are these channels? Why arent the available without mod? AMATEUR/RECEIVERS - All amateur/receiver products except for the 7800 radio and the R9500 receiver have a one (1) year warranty from factory defects and workmanship including accessories (batteries, wall chargers, antennas).

Unplug the radio DC lead and all other leads incl.I was looking at the Icom 7300 on GigiParts website and the offer a mod service.

There is no need to have PEP output of more than 100-110W PEP by the way. On a sidenote the peak to average ratio also improved. The PEP output power increased from 75-80W PEP to approx 140-145W PEP (14,5V DC input).

#Ic 7800 mars mod mods#

I did only one of the mods that involves a jumper from C1509 to ground, because the other mod that involves a 10uF capacitor is reported to cause modulation issues on FM and AM. There are two published mods that are possible on this radio. Of course, there is no need to overdrive any linear amplifier, however Icom engineers have probably overdone it a bit on the conservative side on this radio (?). This causes the output power to not go above approx 75-80W (PEP) as measured on my LPA-100 wattmeter in PEP mode with 14,5V DC input.

This radio is known for a very conservative approach to internal ALC on the power output. Antenna tuner range mod for Icom IC-7300. The diodes should be unsoldered carefully, not broken or crushed. Icom Menu: Manuals: Pictures: misc: ah-3. IC-7000 owners performing the mod do so at their own risk. I recently bought a second hand Icom IC-7100 HF radio for a reasonable price. The modification information for MARS is the official modification information from ICOM USA, so the modification may not be appropriate for versions other than the USA 5 unit.

Ic-7800 mars mod