"Rich Carter" <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- Mike I'll take your suggestion and replace the mic.
Thanks Rich > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Mike Williams > Sent: Sunday, January 20, 2008 7:51 A > To: [EMAIL PROTECTED] > Subject: Re: [drakelist] Microphone question > > > Mike Williams <[EMAIL PROTECTED]> made an utterance to the > drakelist gang > ---------------------------------------------------------------------- > Just a suggestion Rich; try a Shure 444 or D104 (without the > preamp) on your TR-3. This radio and the 4 line have a High > Z mic input. You will get good results with either of these > 2 mic's although there are a myriad of others that will fill > the bill as well. > > Good DX! > > Mike W4DL > > Ron Wagner wrote: > > > > Ron Wagner <[EMAIL PROTECTED]> made an utterance to the drakelist gang > > > ---------------------------------------------------------------------- > > Rich, > > It has been a while since I had my TR3, but I do remember > that a 600 > > ohm hand mic I had tried was not good match for the rig. I would > > guess 2K ohms would be in the ball park. They were made in > the days > > of high impedence mics. > > > > As far as getting only a few watts out, how are you > measuring that? > > Most watt meters I have seen (unless they are peak reading) > only show > > a few watts of RF on the Drakes while measuring SSB. > Drakes are not > > using compression, so they have a very large peak to average power > > ratio. What that means is that unless the meter is > designed to read > > peak power, it will show a very low average power. Average power > > being what most meters read. My TR7 typically shows about > 5 watts on > > my Drake MN4 watt meter. And I know that on a peak watt > meter I have > > ~200 watts going out. > > > > One last thing, on AM it will also show low power. Drakes use > > controlled carrier AM. That is the carrier changed as you spoke. > > What that does is lower the heat on the finals. The TV sweep tubes > > were designed for high peak, low average power. If you ran > them any > > other way, you wore them out very quickly. Ideal for > uncompressed SSB > > service, not so good for other service. > > > > Hope this helps. > > > > 73, > > Ron WD8SBB > > > > On Sat, 19 Jan 2008, Rich Carter wrote: > > > >> The mic came with the rig. I assume they should work > together. The > >> mic seems to work, but it doesn't have enough drive for > the radio. I > >> only get a couple of watts out for SSB if I yell into the > mic. The > >> problem could be in the rig, but I thought it best to > check the mic > >> first. I opened it up. > >> There's a 4 ohm microphone element and a matching transformer that > >> says BT3 > >> 001 on it. I can find no specs for the mic. What is more > >> frustrating is there appears to be no information about what the > >> drake transceiver wants for mic impedance. I don't have > any matching > >> transformers in my spare parts bin. Before I run out > there and buy > >> some parts, I thought it best to see if anyone knows what the heck > >> the rig wants. > >> > >> Thanks for the reply > >> Rich > >> > >> > > > > > ---------------------------------------------------------------------- > > Submissions: [EMAIL PROTECTED] > > Unsubscribe: [EMAIL PROTECTED] - unsubscribe > drakelist in > > body > > Hopelessly Lost: [EMAIL PROTECTED] - help in body of message > > Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net > > > ---------------------------------------------------------------------- > > > > ---------------------------------------------------------------------- > Submissions: [EMAIL PROTECTED] > Unsubscribe: [EMAIL PROTECTED] - unsubscribe > drakelist in body > Hopelessly Lost: [EMAIL PROTECTED] - help in body of message > Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net > ---------------------------------------------------------------------- > ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
