Hello Everybody,
I would like to use the Drake R8 with a mil transceiver. The transceiver
has the PTT which is used also send CW. I have a Elad Switchbox,
http://www.woodboxradio.com/download/SwitchBoxManENG_Reducedv1.03.pdf, for
that, so I should be fine. If I connect everything according to the
Hello Everybody,
I would like to use the Drake R8 with a mil transceiver. The transceiver
has the PTT which is used also send CW. I have a Elad Switchbox,
http://www.woodboxradio.com/download/SwitchBoxManENG_Reducedv1.03.pdf, for
that, so I should be fine. If I connect everything according to the
Hi there,
I use a minicircuit PSC-2-1 combiner, something like a 20$ device or
less, to use both a vertical antenna and an horizontal at the same
time from LF to UHF. Antennas in principle should be far away each
other. However somehow mine are very close, the vertical being on top
of the horizont
Hello folks!
I only use homemade microphones. Ceramic microphone work great with
old Drakes. Dynamic microphones also work very well after that a
step-up impedance audio transformer matches the mike to the radio.
However I wish to experiment something else, the ugly carbon
microphone! Has anyone t
Indeed, Garey international support is just monumental! No factory can
provide that!
73,
Franco from Milano-Italy
2010/8/3 Steve Wedge :
> Hear, hear!
>
> Thanks for all your help, Garey.
>
> Steve Wedge, W1ES/4
>
> "I can't complain, but sometimes I still do."
> - Joe Walsh
>
> If the above mess
I would suggest that you replace both bulbs with #755 types.
> The #47 is a "3000 hour life" bulb, while the #755 is a "20,000 hour life"
> bulb, meaning that you most likely will never have to replace them again.
>
> 73, Garey - K4OAH
> Glen Allen, VA
>
>
Hi folks,
both the bulbs at the plate amps rel. output and at the dial stopped
working as I turned up the T-4XB. I turned it on after about 1 minute
I had turned it off and then the lamps stopped working, I don't know
if this could be related to the burning of the lamp, but it happened.
Where coul
Hello everybody!
I would like to determine the transmitting frequency of my T-4XB using
a signal generator (PLL or DDS).
One possibility I guess to connect the signal generator in place of an
aux crystal through an impedance transfomer.
Another possibility might be to connect the signal generato
of the T-4XB through the
> transformer to a speaker and hear the sidetone. If not, then there may be a
> problem in the T-4XB.
>
> 73, Garey - K4OAH
> Glen Allen, VA
>
> Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs
>
>
>
> iz oos wrote:
>
QSL Geoffrey!
20% of loss, means that 120 watts can be expected in the best scenario in Italy!
73,
Franco IZ2OOS
2010/3/25 geoffrey mendelson :
>
> On Mar 25, 2010, at 2:34 PM, iz oos wrote:
>>
>> that is interesting! I've learnt today that in Italy we use 50Hz. My
Steve,
that is interesting! I've learnt today that in Italy we use 50Hz. My
AC-4 runs quite warm indeed.
73,
Frank IZ2OOS
2010/3/24 Steve Wedge :
> Frank,
>
> Don't forget that the transformer in the AC-4 was also designed for 60 Hz,
> rather then 50. As I learned years ago when testing pow
Hello Friends,
It could be a problem of language but I cannot quite understand "FIG.3
CONNECTING THE T-4XB TO A RECEIVER OTHER THAN THE R-4". In this figure
it is shown a 2-C with the speaker output connected to the speaker and
the antivox cable from the antivox sidetone output of the T-$XB to a
i
Hello friends,
My AC-4 is wired for 240 VAC. However in Italy we have 220 VAC.
My T-4XB loads correctly as I see It draws about 0.3A or a bit more,
and I see about 90 Watts in the tune mode and about 110 Watts in CW
key-down (average power) on the 20 meters band.
I know that in USA a T-4XB is ab
QSL QSL Garey!
I tought that the function receiver ON was to be used only without the
transmitter and that the external mute had to be always used. I
rechecked today... I think it was the switch on the left side of the
chassis for using external crystals or the internal LO that was not
making a
Hello everybody
I think I made a mistake! Testing the T-4XB I had connected my 2-C to
the RX connector of the T-4XB. A dummy load was connected to the
antenna connector and a mute was connected betenn the 2-C and the
T-4XB. The 2-C function was on EXT mute, but one time I set it on "ON"
so the
, deforming it and preventing the piston from going any further.
> Hopefully that's not your problem.
>
> Let us know what you find!
>
> 73, Garey - K4OAH
> Glen Allen, VA
>
> Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs
>
>
>
> iz oos wrote:
>&
Hi! Homework complete!
Yes, Garey was correct !!! The RF Output meter was not sensitive
enough to balance the Balanced Modulator and I think I followed his
procedure!
I connected a Drake 2-C, with the mute cable and the antenna cable
connected to the rx output of the T-4XB and then "spotted", so
carrier balance control So, I CAN'T rebalance
the Carrier Balance control
Why is that???
73,
Frank IZ2OOS
2010/3/22 iz oos :
> Hi!
>
> I did my homework! Indeed, the carrier oscillator crystal frequency
> was not exactly set to 5.645 MHz, mainly due to C2 which wa
en Allen, VA
>
> Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs
>
>
>
> iz oos wrote:
>>
>> Hi Folks,
>>
>> I am testing my T-4XB. Before going in the air, I wanted to check my
>> modulation first. Using different high impedance microphones
Hi Folks,
I am testing my T-4XB. Before going in the air, I wanted to check my
modulation first. Using different high impedance microphones I
transmitted into a dummy load and listened to the receiver without
antenna. I found that the LSB has a different modulation compared to
the USB. The USB is
om about -50 to
>> -100 VDC CAREFUL !!
>>
>> These voltages are with the supply wired for 120 VAC. Yours is probably
>> wired (or switched) for 240 VAC and these voltages may vary roughly +/- 10%.
>>
>> Be SURE and check the fuse. It should be a 5 Amp Slow Blow
Kevin
I remember I had put another 1000microfarad in parallel, I believe,
with C48 and that solved my hum. Another time I got some strange
audio, there were some bad solder joints at the output headphone jack.
My advice would be to check thoroughly all the joints at the audio
section.
Consider th
Hi Folks,
I have 2 spare 400V 22microF and 2 spare 200V 22microF. The former are
quite bigger than the latter ones but both types could be soldered
underneath the old big can as there is enough space. I would like to
make things as simple as possible and mechanically durable. How would
you sugges
Hi Folks,
Premise: my AC-4 has still all the original caps, included the bias
ones which I should decide to change.
Weeks ago, I had experienced something very strange with my T-4XB. It
tunes correctly, but, at a particular point of the RF-TUNE in the
middle of the 80 meters band, it absorbed 320
A local store sold me a BD243C. Physically it is different (it looks
like a LM7812), but they told me it is equivalent to the 40310. What
do you think?
73,
Franco IZ2OOS
2009/7/11 Joe Pyles :
> I've replaced the audio output device in a couple of 2C's with the NTE175
> and had NO oscillation prob
Hi folks,
I am in the need to change the output audio transistor 40310 in my
drake 2-C. Is there a modern equivalent of the 40310 so I can easily
replace it?
73,
iz2oos
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