Recent content by JasonD239

I bought one of these boards. I have a newer trashy key d104 regardless. if its a valid solution Ill get another. Thanks.

I lost 1/2 of the broken switch. They look like this eBay listing. The seller wont ship USA. ww.ebay.com/itm/115021552295

My 575-m6 switch broke when the mic hit the ground. The switch is not fixable so i removed it. I could retro fix it with wires and the wrong switch but i figured i would check here in hopes someone has a source on one. Thanks.

The gizmo is the "anti-static ball" I have not had a failure where segments connect but rather the top whip bending. The 1st time it came down was my fault because the mast broke, it was to thin. Water pipe schedule 40 fixed that problem. Per instructions: 3/4 Coaxial J-pole: Gain 2 dBd, 4.15...

Good luck, I'm on my 3rd one near the windy city Chicago. I just keep fixing and replacing it as needed because in real world testing the only omni antenna that has given it a run for the money is the super penetrators. People can do the fancy math and wave propagation and radiation angles and...

After some social media posts on bbi group i was informed they made at least 2 different revisions of this amp and pics were posted. The resistors installed on both photos reflected 51 ohms. I have installed the 51 ohm resistors back into the unit. The radio is working fine and power is good and...

Interesting situation I ran into here. I have the amp pulled apart and I have 51 ohm resistors ready to install however the current resistors R4 and R5 look to be 15 ohm 5%. The parts list off the 3300 amp section says R4 and R5 are 51 ohm 2 watts. Could this be a typo? any feedback would be...

My understanding is that megawatt power supplies are great constant power where as powermax is selectable between stage charge or constant. With that being said I do not have 220 AC installed and when large amounts of current are needed for testing. The 200AH battery will take the surge and...

Wow, I'm seeing 51 ohm 2watters. Thanks much for this

I can say I have ran a Powermax pm4-100lk on 4 stage mode hooked to a Neptune nt12-200 200AH gel deep cycle battery and the setup runs great. The most I hit it with was a 12 pill but it held it great. I have nothing but good things to say about the Powermax stuff. I also hear great things about...

Would any kind person happen to have the schematic for the back 100w amplifier on this radio. I would like to confirm the value of the two large discolored resistors that go from the input to output transformer over the 2sc2290 transistors. I have them reading at 15 ohms but burnt.

Thank you for the information. I do indeed get a 4 on my lowest 200pf scale. I will replace the part and retest operation. UPDATE: I replaced the 3pf NPO black top and re-tested RX operation and found it to be acceptable but a bit on the high side with a floor noise to signal ratio that was a...

So I did a full electrolytic replacement, replaced diodes d2,d3,d23 with 1n4148. Replaced D24 with an NTE109. I have NTE 109 and NTE110 and wasn't sure of the best replacement. Anyway moving along I checked the ceramic disk capacitors in the above section and found the smaller 104 was bad or...

I manipulated whatever sorcery mod this is. I first unsoldered all the caps in this area and the receive overload was gone and rx was working. Then I adjusted to this configuration to get some gain back. I assume this was some factory update but I cant seem to find anything on why this was done...

Did you ever narrow this down. I am currently trying to trouble shoot very "hot rx" loud and distorted sound with AM however ssb seems fine. I have to run the rf gain way back or the input signal on AM is very distorted. cap replacement didn't help d1, 2, 3, 4 are all good. I picked up a left...