If you're going to use it with a 50 watt mobile, i see no point in leaving the first driver in. Like you said. More heat on the same heatsink along with the risk of accidentally blowing the driver if you key up with 50 watts.
Hi, I know the video is a few years old but could you tell me what transistor you used to replace the driver? According to the schematic it is a MRF450 but it sounds strange to me since the data sheet for it indicates that it is for 30Mhz. If you remember it I would appreciate it. Regards.
@@Sky1 I am really grateful for the information you have given me. I am repairing a client's equipment which is actually a Mirage B215, I have looked for the schematic everywhere but I have not been able to find it. I downloaded as many schematics and interior photos of Mirage linear units as I have found and the most similar one is the B1016. The client's equipment blew up due to excessive input power, the driver that was installed is a MRF240A, I have bought a new one, I have installed it but it seems to be a fake. I will try to get a MRF450 then, I hope to have better luck. Regards,
I accidently ran 11 watts into mine and now it does not output anything. Is there a certain part that would have blown by my mistake? a transistor or diode perhaps? I checked the fuse and it is fine. I wish there was a fuse that protected the amp when this is done as I'm not greet at electronics. I see a transistor named MRF240A, is that what would go out if I over-drove the amp?
I have put my B1016 back on line to work with an IC 705. Am finding the amp’s T/R relay operates a bit too slowly. The 705 shows a fraction of a second at very high SWR before the amp relay closes and SWR becomes about 1.1 to 1. Did you refurb the relay? Any way to speed it up? Thanks!
I know this is a long shot and this is a old video but could you please tell me the name and value of the preamp transistor the one in my amp has been totally removed and i have nothing to reference to so i can order a new part and fit it if you could i wil really appreciate it
I ordered one (J309) and don't think I even used it as I was able to re-peak it just fine. I got it from RF Parts. It is in the schematic or you can call MFJ. I was not able to get the same case style. www.qsl.net/wb4kdi/Mirage/index.html
Sir gd pm , im CYRIL PONTILLA from Philippines, you have many radio, my radio us portabase Baofeng only. Can you donate 1 radio vhf only if you have extra radios.
I need to do a Hamfest update after going to another local hamfest and scoring a fabulous deal on a nice IC-7000
If you're going to use it with a 50 watt mobile, i see no point in leaving the first driver in. Like you said. More heat on the same heatsink along with the risk of accidentally blowing the driver if you key up with 50 watts.
yup, and it has happened before to one of my amps.
@@Sky1 I've never done it myself... three times... 😂😂😂
Hi, I know the video is a few years old but could you tell me what transistor you used to replace the driver? According to the schematic it is a MRF450 but it sounds strange to me since the data sheet for it indicates that it is for 30Mhz.
If you remember it I would appreciate it.
Regards.
that frequency is what was used for the ratings. It operates VHF just fine. I opened it up to confirm and yes it is an MRF-450 with the Motorola Logo
unless you need to use it for an HT I would bypass it. The 3016 has it jumped out
@@Sky1 I am really grateful for the information you have given me. I am repairing a client's equipment which is actually a Mirage B215, I have looked for the schematic everywhere but I have not been able to find it. I downloaded as many schematics and interior photos of Mirage linear units as I have found and the most similar one is the B1016. The client's equipment blew up due to excessive input power, the driver that was installed is a MRF240A, I have bought a new one, I have installed it but it seems to be a fake. I will try to get a MRF450 then, I hope to have better luck.
Regards,
@@Sky1 He uses it with a HT.
I accidently ran 11 watts into mine and now it does not output anything. Is there a certain part that would have blown by my mistake? a transistor or diode perhaps? I checked the fuse and it is fine. I wish there was a fuse that protected the amp when this is done as I'm not greet at electronics. I see a transistor named MRF240A, is that what would go out if I over-drove the amp?
I've used a scope to check where the RF stops. Before m f j closes down grab all the schematics you can.
I have put my B1016 back on line to work with an IC 705. Am finding the amp’s T/R relay operates a bit too slowly. The 705 shows a fraction of a second at very high SWR before the amp relay closes and SWR becomes about 1.1 to 1. Did you refurb the relay? Any way to speed it up? Thanks!
Use a TX cable is what I'm told
I know this is a long shot and this is a old video but could you please tell me the name and value of the preamp transistor the one in my amp has been totally removed and i have nothing to reference to so i can order a new part and fit it if you could i wil really appreciate it
I ordered one (J309) and don't think I even used it as I was able to re-peak it just fine.
I got it from RF Parts. It is in the schematic or you can call MFJ. I was not able to get the same case style.
www.qsl.net/wb4kdi/Mirage/index.html
@@Sky1 thank you this is going to help a lot you are a life saver 73
Sir gd pm , im CYRIL PONTILLA from Philippines, you have many radio, my radio us portabase Baofeng only. Can you donate 1 radio vhf only if you have extra radios.
Maybe I will bring one to you! Lkve the Phillipines.
@@Sky1 ok Sir , how can you give Me ?
I need to do a Hamfest update after going to another local hamfest and scoring a fabulous deal on a nice IC-7000