Does anyone have an exact number or a very good guess as to what exactly the scan speed is on the R7100? Also is it a different speed on memory scan vs programmed scan (I ask because some scanners have a different speed for scan vs search). The only info I've found is that it is "too slow" which is a little vague to me. I can't seem to find that spec listed anywhere, but for the R8500 I found it listed that it can be "as high as 40 ch per second". Could the speed on the R7100 be considered to be about the same or is it much slower than that?
R7100 scan speed
- Thread starter fritz73
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I think, if I remember it right, I measured it, by adding frequencies in ascending order, and I got about 26-28 channels a second. I got like 31-33 if I narrowbanded it, like just adding rail frequencies close to each other. This is all from memory, my 7100 is long gone.
W3DMV
Member
Not listed in my manual.. Checked with a stop watch
Search Checked at 800, 400, 200, and 30 Mhz in both FM & AM modes
speed was: 12 channels/sec using 1 Khz & 12.5 Khz steps
Scan Speed using frequencies in all different bands was 10.9 channels/sec
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Search Checked at 800, 400, 200, and 30 Mhz in both FM & AM modes
speed was: 12 channels/sec using 1 Khz & 12.5 Khz steps
Scan Speed using frequencies in all different bands was 10.9 channels/sec
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Fast1eddie
Member
Icom R7100 Search Speed
Hello everyone, just removed mine from the bench, and am personally ok with the speed as is. Any delay will result from scanning a mix of frequencies with dissimilar modes. Switching time between all those and the relays which perform the band switching are also a factor. Diodes could be used instead which would improve the speed, but would generate additional birdies. Stopping on noise will also slow it down. I tend to use the R7100 to manually tune and search and have a dedicated scanner.
Are there credible cooling mods for it??? Run mine on a DC supply, but would love to return her to stock.
Hello everyone, just removed mine from the bench, and am personally ok with the speed as is. Any delay will result from scanning a mix of frequencies with dissimilar modes. Switching time between all those and the relays which perform the band switching are also a factor. Diodes could be used instead which would improve the speed, but would generate additional birdies. Stopping on noise will also slow it down. I tend to use the R7100 to manually tune and search and have a dedicated scanner.
Are there credible cooling mods for it??? Run mine on a DC supply, but would love to return her to stock.
It will run quite hot from the AC transformer. So .. anything you can do to resolve that will be good.
So .. if you are running on 12v, continue to do so, it will run much cooler. As you probably know the replacing of the caps is very common with these radios .. often due to the heat issue and the effect on the components.
dkf435
Member
You can either have a good operating cool radio or a stock radio that is hot but not both. Still have my original R7100 from around 1993 and the second one when they started blocking them in 1994-1995 plus another one I picked up a few years back. Run them all off an Astron RS-35 with battery backup. Only thing I have done is replaced backlight bulbs and tweeked the center tuning indicator on one. The radios run 24/7/365 and never get turned off, so figure the hardest things on them is heat and power transients.
Did mount a 486 processor cooling fan on the back of one for a while and plugged that into the 4 pin molex on back but using the regulated supply is better for temps.
EEB did mods for R71 / R7000 radios with bigger heat sinks bigger semiconductors and fans.
Also running the PCR radios run cooler wth 10-12v demand regulated wall warts and tight 12v regulation in a car helps.
David
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