Icom Ic706mk2G HF VHF UHF Transceiver.
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- เผยแพร่เมื่อ 12 ต.ค. 2024
- A quick comparison look at the bigger brother Icom IC706mk2G with a few additional features including DSP filtering and UHF 70cm additions. Lovely radio, this one was an interesting repair for a mate that led me to witnessing a new cause of a fault I actually had not seen before. A bit of an examination with my multimeter was a lot of fun ending with success. Cheers Brenton vk3cm jdw229 pls subscribe and also feel free to join us on Facebook at Aussie Radio Pickers or vk ham sales and service anytime.
Yep, nice radio, I have one since 2005, they are only 20watts on 70 and 50watts on 2.
I all ways thought the 706 didn’t have 2mtr, Me bad.
IIRC, the original 706 didn't.
The 'SO-239' issue that you found, was the loose (or broken ?) center pin, actually visible from looking at the SO-239 from the rear of the rig ? or was there some play in the center conductor that you could detect from the rear of the rig? Just curious if this issue is something that ONLY can be inspected by pulling the cover off and removing internal boards? Thank you
I have a second hand unit that had an issue with the power on switching. There is a smd resistor that can go OC on the PA board R591. I found one cause of this quite by accident. The battery that the radio was connected to developed a fault and the voltage supplied dropped considerably causing the power on circuitry to start flapping for want of a better word at a frequency of 1.5 hz. This caused the resistor to begin heating up due to the much increased time the current was flowing through the resistor to a point that it burnt through to open circuit. Understand that the power on circuit is only a transient pulse to pull the relay in. Fixed this with a 4.7ohm 1/4 watt discreet component and have never looked back.
I suspect as these radios age it might pay to check the connections every couple of years to make sure sure the abuse doesn't keep up maintenance of the connectors
I suspect the UHF is a lower wattage to cater for cb use
I believe VHF conforms too marine specifications this is why it has a higher output
'UHF is a lower wattage to cater for cb use' ? You lost me.....how is 440mhz (UHF) anywhere near 27mhz (CB) ?
@@3qdx remember this we don't all live in the home of the brave and the land of the free and some places of the world do have an active uhf cb band wide and naarrow band in and around 476-476 MHz
And typically the only time you uhf at a higher wattage is if you are using it as a repeater at about 80 watts pep though you only connect with it with a 4-5 watt ..
unlike vhf which falls between marine and air bands between 108-174MHz..
I find most things that are designed to run within the repeater trunking service whether it be in uhf/vhf/hf once you start to channelize services on these MHz frequencies you typically have an operations range of 430-480 MHz
I typically work across all bands of communications in an emergency kinda stops the pile up of stupidity in a disaster type service situation.
20 watt pep un uhf sounds right given uhf typically has a short range reception out side of repeater use
Still one of my primary rigs!
Hi, I have a radio microphone 863 to 865.000mhz uhf. Can you advise if there is a scanner available to pick up the signal? Thank you.
With a dual band antenna connected, do i have to press or change anything to switch from HF to UHF? I have two of the MKIIG and one of the 706. going to put one in my Wrangler. Which one would you guys put in the vehicle?
rambling about nothing, waste of time.