I've been wanting one of these bad boys for ages.
25 to 2000mHz in all modes, decent scanning, was a workhorse for int agencies and military all over the world for some time, nothing did what this thing could for the dollar when it was in production. Some still consider it better than a lot of the current stand alone v/uhf rx available today. The NSA bought these and its brother the R71 by the pallet, as did a lot of the rest of the three letter gangs. If you have each of these, you have NSA twins. One of the east coast radio vendors who sold those same pallets of R71/R7000 to our fed overlords even offered a upconverter mod option to enable the R7000 to cover vlf to 2GHz. I read somewhere the dynamic range wasn't very good on hf with these mods.
https://www.universal-radio.com/catalog/scanners/r7000.htmlI've been keeping an eye on one a friend has had for decades, and after decades of use it has the dread iCom display failure as noted by so many R71 owners where the bypass caps in the display circuit dry out and the display goes along with it. This is a non trivial repair so I wasn't looking forward to doing it on my friends rig after purchase. He wants a bit more for it than I want to spend right now but I'm certain I'll end up with it eventually as it's still a good deal.
So the other day I saw an ad at qth for an Icom IC-R7000. It showed illuminated display such as vfo and mode in the included pic, but no rx was listed as the issue. It looked like new in the pic. Seller wanted $75 for it, shipping to be discussed.
I don't really have the money to spare, and considering how long I've been eyeing my friends R7000 that I know for certain works but needs display caps replaced this was a risky deal in numerous ways compared to my friends, but I emailed him to ask what the symptoms were and for shipping to my locale.
He replied that he had checked the internal battery and it was good, and that "it worked a week or two ago and now no rx". He had spent something around $32 to ship a similar item close to me recently and he offered it to me for $100 shipped to my door.
Impulse took over and I sent the money. He also said I was 1st of 3 HAMs who were on the waiting list if a deal failed. I figure looking as good as it did, I might be able to flip it for a tidy sum if repair was out of my league and/or pocketbook.
So some days go by and he informs me he sent it double boxed via USPS, who said it'd be here this Friday, it was here by 0857 local time this am (Thurs) as he paid for 3 day delivery.
Had some car repair work to distract me from the all important radio unboxing/postmortem and finally got around to opening the boxes.
Indeed it looks like new, no cig or smoke smell, all controls operated smoothly, no dings or scratches. Got an ac cord, plugged the ac cord into the wall and into the radio and held my breath as I pressed the power switch.
Everything lighted up as expected, modes changed, could hear the mixer relay switch for 1gHz operation, vfo worked fine, and noted the smeter level changed slightly as I went from mode to mode. Display is bright like when an iCom has good display caps, and dimmer switch works. Squelch worked too per rx signal indicator light.
I don't recall if the remote control internal option is required for that indicator to light, but it does when the remote switch is pressed. Turned squelch full counterclockwise and audio full clockwise, not a peep from the internal speaker. Then I turned the audio way down for the next test as everything so far indicated control panel if not rf life of at least a minimal sort.
Plugged in a set of phones fully preparing myself for there to be nothing, turned up the volume, and the glorious rush of an audio amp ensued! Elation and despair as I got a very nice R7000 by way of theft as it were; for whatever reason, the internal speaker isn't functioning at all and that seems to be its only malfunction noted so far.
So, have to open the case and see why the internal speaker isn't firing, I never use internal speakers save for testing but they're very important as that piece of test gear.
Anyway, Project 7000 entails a cheap RTL sdr to do the panadaptor display when desired, and the R7000 to fulfill spectrum surveillance duties, especially of the mil air variety.
There are a number of worthy mods to do to a R7000, some of them from the SETI guys and others who use these things as radio telescopes. Wonder if it will hear the hydrogen line on a discone.
http://www.setileague.org/hardware/receiver.htmhttp://www.thornett.net/Rosliston_Archive_2009-11/Modifying_ICOM_R7000_for_use_in_radio_astronomy_incl_AGC_Off_-excellent_article-_accessed_180811.pdfAlso, anything this old will need a full alignment to come close to or exceed the rx specs as stated in the manual so there's that to do also.
I know this thing's an antique and sdr rigs are so much more capable. I have a RSP2 that covers more spectrum than the R7000 does and offers wider spectrum display than that capable of an R7000 IF output, but that sdr mandates the use of a pc, and there's no gratifying tuning knob.
Knobs are nice to have.
more later