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Posted: 5/28/2013 10:32:52 AM EDT
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I have nothing that will apply the needed output power. Max is 500mW. Who has that kind of radio these days?
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Are they good quality? I don't think I've seen these before. I guess I'll find out, I ordered one. |
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I have nothing that will apply the needed output power. Max is 500mW. Who has that kind of radio these days? A number of radios have a Transverter port. I read in another auction for the same board that you can change the input pad resistors so it can be driven with as low as 1mW. |
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If it was 222 I would buy, no need for a transverter to 2m. 902 would also be nice.
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I have nothing that will apply the needed output power. Max is 500mW. Who has that kind of radio these days? Most radios will do 5w out. It's easy to build an attenuator to step that down to the mw range. |
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You are going to have to get heat away from that board if you want to run FM. If my K3 didn't have an internal transverter option I'd be all over that one
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I have nothing that will apply the needed output power. Max is 500mW. Who has that kind of radio these days? Most radios will do 5w out. It's easy to build an attenuator to step that down to the mw range. There are some easy homebrew attenuators that you can build. You will have to make a switch too or else your RX will be attenuated too. That could easily be done using your rigs amp keying circuit. |
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You are going to have to get heat away from that board if you want to run FM. If my K3 didn't have an internal transverter option I'd be all over that one The description mentions that you will need to mount the transistor to a heatsink. The way the board is built, it should be easy to mount the transistor to a large heatsink and then use some plastic or silicon spacers to keep the rest of the board from touching. I think I'm going to grab one. Should be a good match for my Flex-1500 and quite a bit cheaper than every other transverter I've seen. Hopefully the performance is reasonable. Plus the 1500 transmits well beyond 10 meters on the transverter output so the board should cover all of 2 meters. |
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tag for reviews Better hurry - there are only 4 left! |
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You are going to have to get heat away from that board if you want to run FM. If my K3 didn't have an internal transverter option I'd be all over that one The description mentions that you will need to mount the transistor to a heatsink. The way the board is built, it should be easy to mount the transistor to a large heatsink and then use some plastic or silicon spacers to keep the rest of the board from touching. I think I'm going to grab one. Should be a good match for my Flex-1500 and quite a bit cheaper than every other transverter I've seen. Hopefully the performance is reasonable. Plus the 1500 transmits well beyond 10 meters on the transverter output so the board should cover all of 2 meters. I also have the Flex-1500. If this turns out to be a nice unit I may build it into a similar style similar style case as the 1500 |
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tag for reviews Better hurry - there are only 4 left! Make that Only 2 left |
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Quoted: Quoted: Quoted: tag for reviews Better hurry - there are only 4 left! Make that Only 2 left Dang it! I'll be killed if I buy anything else, though I'd love to be able to get 2m out of the 7600... |
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Quoted: Quoted: Quoted: Quoted: tag for reviews Better hurry - there are only 4 left! Make that Only 2 left Dang it! I'll be killed if I buy anything else, though I'd love to be able to get 2m out of the 7600... OK, dammit. Now there's zero left. Somebody come fish my carcass out of the creek... |
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tag for reviews Better hurry - there are only 4 left! Make that Only 2 left Dang it! I'll be killed if I buy anything else, though I'd love to be able to get 2m out of the 7600... OK, dammit. Now there's zero left. Somebody come fish my carcass out of the creek... I told you to buy one! |
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Quoted: Quoted: Quoted: Quoted: Quoted: Quoted: tag for reviews Better hurry - there are only 4 left! Make that Only 2 left Dang it! I'll be killed if I buy anything else, though I'd love to be able to get 2m out of the 7600... OK, dammit. Now there's zero left. Somebody come fish my carcass out of the creek... I told you to buy one! I got the last one |
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Quoted: Quoted: I got the last one You Did? I think so. There was 1 remaining, then i bought one, it went to zero, and I got a shipping email today... ? |
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I got the last one You Did? I think so. There was 1 remaining, then i bought one, it went to zero, and I got a shipping email today... ? Glad you got one. Now the wait begins |
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I got the last one You Did? I think so. There was 1 remaining, then i bought one, it went to zero, and I got a shipping email today... ? Nice! |
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Still waiting Me too. I wouldn't expect it to arrive anytime soon. As long as it arrives within a month I'll be happy. |
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Woo Hoo It came in
I've been trying to figure out the values I need to make the input attenuator for 1mw. It has a 2.2 k ohm for the series and a 330 ohm for the shunt I think it is going to be remove the shunt and short out the series. |
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Mrs. Slice called and said I got a package today from Ukraine, I'm guessing it was this critter. Now to figure out WTF to do w/ the thing...
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Mrs. Slice called and said I got a package today from Ukraine, I'm guessing it was this critter. Now to figure out WTF to do w/ the thing... Cool I still need to get mine hooked up to test it out |
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Mine also arrived today. So a quick trip to Radio Shack and the hardware store to pick up a few things... then discover that my soldering iron is MIA. Found my soldering gun but it's all gun and no solder - doesn't heat up anymore. Grrrrrr. At least I got the case drilled. http://i.imgur.com/wFQKFsqh.jpg http://i.imgur.com/8rYQyhJh.jpg 2 meters on the left, 28 Mhz on the right, and the mic connector has power on the top two pins and PTT on one of the others. Looks good I haven't had a chance to do much with mine. |
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Where'd you get that box Phurba? Or did you make it? Seconded, that's a sweet enclosure. |
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Where'd you get that box Phurba? Or did you make it? Seconded, that's a sweet enclosure. Radio shack I'm not sure of the model number (threw the packaging away) but it was hanging on the rack in the store. It's just stamped aluminum - it would be easy to build your own. I stuck some silicon 'feet' from the hardware store on the bottom so it wouldn't be sitting on the screw head. Then I used the rest of the silicon sheet to keep the board away from the chassis. |
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Quoted: Radio shack I'm not sure of the model number (threw the packaging away) but it was hanging on the rack in the store. It's just stamped aluminum - it would be easy to build your own. I stuck some silicon 'feet' from the hardware store on the bottom so it wouldn't be sitting on the screw head. Then I used the rest of the silicon sheet to keep the board away from the chassis. This one? |
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Radio shack I'm not sure of the model number (threw the packaging away) but it was hanging on the rack in the store. It's just stamped aluminum - it would be easy to build your own. I stuck some silicon 'feet' from the hardware store on the bottom so it wouldn't be sitting on the screw head. Then I used the rest of the silicon sheet to keep the board away from the chassis. This one? Looks like it. |
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I was reading the instructions. It appears this critter is expecting 100mw of input power. My IC7600, on the transverter jack, puts out -20dbm, or .01mw if my math is correct. Directions say that the input is dependent on R7&8, but gives no guidance for adjustment.
Help? |
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It lives! http://i.imgur.com/JUvU0S5h.jpg Receiving a repeater about 30 miles away. It appears that I can't use the filters in FM mode, so I was using the adjustable tracking notch filters to get rid of some hum. The noise appears to be local as it does not track when I change frequencies. I also never knew about that repeater until I started spinning the tuning knob http://i.imgur.com/uCbGG71h.jpg I still need to get a DB9 connector to connect to the Flex-1500 for TX sequencing so I haven't wired up the power / PTT connector yet. At the moment I just have the 12V lead clipped to the back side of the +V pin and the negative lead clipped to the chassis. BTW, I highly recommend building this in a metal box. I haven't tried transmitting yet since I don't have the sequencer wired yet. It occurs to me that I'll probably want to drive an amplifier with this eventually, so I'll probably add a small sequencing circuit with PTT out - have it raise the external PTT line then wait a few msec before bringing up the transverter The wiring job could be a little neater, but I figure I'll rip into it several more times so it's nice to be able to remove the entire board without unsoldering everything. http://i.imgur.com/tGP9kXs.jpg Very Cool, I need to get time to get mine setup |
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I have AGWPE set up now (this program makes me want to slam my head into a brick wall) and now I'm running AGWTracker (makes me want to slam my head into a brick wall a little less than AGWPE but the urge is still there). Kinda neat watching all the cars breaking the speed limit
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I was reading the instructions. It appears this critter is expecting 100mw of input power. My IC7600, on the transverter jack, puts out -20dbm, or .01mw if my math is correct. Directions say that the input is dependent on R7&8, but gives no guidance for adjustment. Help? I'll see if I can figure out the math tonight, but you should be able to drive the transverter with .01w (i assume that you mean .01w and not .01mw) - just not with full power out. Yow, just looked at the manual - it really is -20 dbm on the transverter jack. That's REALLY low. You'll be able to receive for sure, but that might not be enough drive... at least you won't have to worry about overdriving it |
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I was reading the instructions. It appears this critter is expecting 100mw of input power. My IC7600, on the transverter jack, puts out -20dbm, or .01mw if my math is correct. Directions say that the input is dependent on R7&8, but gives no guidance for adjustment. Help? I'll see if I can figure out the math tonight, but you should be able to drive the transverter with .01w (i assume that you mean .01w and not .01mw) - just not with full power out. Yow, just looked at the manual - it really is -20 dbm on the transverter jack. That's REALLY low. You'll be able to receive for sure, but that might not be enough drive... at least you won't have to worry about overdriving it I have been thinking about this The Flex puts out 1mw (.01 watt right) I'm thinking it should be replace the series resistor with a wire (short it out) and then possibly removing the shunt resistor. |
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I was reading the instructions. It appears this critter is expecting 100mw of input power. My IC7600, on the transverter jack, puts out -20dbm, or .01mw if my math is correct. Directions say that the input is dependent on R7&8, but gives no guidance for adjustment. Help? I'll see if I can figure out the math tonight, but you should be able to drive the transverter with .01w (i assume that you mean .01w and not .01mw) - just not with full power out. Yow, just looked at the manual - it really is -20 dbm on the transverter jack. That's REALLY low. You'll be able to receive for sure, but that might not be enough drive... at least you won't have to worry about overdriving it I have been thinking about this The Flex puts out 1mw (.01 watt right) I'm thinking it should be replace the series resistor with a wire (short it out) and then possibly removing the shunt resistor. Probably something like that. I'll check the schematic tonight... but I'm afraid I might have to use maths |
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Quoted: Quoted: I was reading the instructions. It appears this critter is expecting 100mw of input power. My IC7600, on the transverter jack, puts out -20dbm, or .01mw if my math is correct. Directions say that the input is dependent on R7&8, but gives no guidance for adjustment. Help? I'll see if I can figure out the math tonight, but you should be able to drive the transverter with .01w (i assume that you mean .01w and not .01mw) - just not with full power out. Yow, just looked at the manual - it really is -20 dbm on the transverter jack. That's REALLY low. You'll be able to receive for sure, but that might not be enough drive... at least you won't have to worry about overdriving it Yeah, I need some sort of micro-amp . Freaking Icom... |
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I was reading the instructions. It appears this critter is expecting 100mw of input power. My IC7600, on the transverter jack, puts out -20dbm, or .01mw if my math is correct. Directions say that the input is dependent on R7&8, but gives no guidance for adjustment. Help? I'll see if I can figure out the math tonight, but you should be able to drive the transverter with .01w (i assume that you mean .01w and not .01mw) - just not with full power out. Yow, just looked at the manual - it really is -20 dbm on the transverter jack. That's REALLY low. You'll be able to receive for sure, but that might not be enough drive... at least you won't have to worry about overdriving it Yeah, I need some sort of micro-amp . Freaking Icom... The transverter out is probably just a short piece of coax wrapped around the main out |
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Re-read the specs on my 1500 and realized that the PTT pin is an open drain, so I cooked this up in Eagle to drive the PTT on the transverter. Plus it lets me have cool green/red LEDs for RX/TX. Anybody see anything obviously wrong? The 10k resistor will probably go down a bit - just figured I start high to protect the flex. http://i.imgur.com/rwZeIeR.png I don't own a 2m amplifier yet, but I'm wondering if I should redesign the keying circuit to sequence the amp I'll eventually own, or just stick with this for now. ETA: Derp, had my meter wired up backwards... that pulldown resistor will be a pullup. Unless that relay is huge, you can get by with a MUCH larger resistor for R1. 10K is a typical value. Might want to add a 0.1 uF ceramic bypass cap between the base of T1 and ground, to prevent stray RF from keeping T1 turned on all the time. |
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!@#$... my calculations were in mA instead of A.... I'll redo them tomorrow.
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According to this link (p19), the transverter port can put out up to -1dbm (0.79mw) with the rig at full power. Maybe there's hope yet?
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According to this link (p19), the transverter port can put out up to -1dbm (0.79mw) with the rig at full power. Maybe there's hope yet? That's Good news. I still need to get moving with mine, I'm trying to figure out the values for R7 &R8. I e-mailed the seller but her did not have them so it looks like I'll have to do some math |
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I have AGWPE set up now (this program makes me want to slam my head into a brick wall) and now I'm running AGWTracker (makes me want to slam my head into a brick wall a little less than AGWPE but the urge is still there). Kinda neat watching all the cars breaking the speed limit [Cough] Soundmodem && xastir [/cough] |
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